iOS version history

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Apple Inc. provides updates to the iOS operating system for the iPhone, iPad, and iPod Touch through iTunes, and since iOS 5.0, over-the-air software updates. With the announcement of iOS 5.0, on June 6, 2011, a USB connection to iTunes was no longer needed to activate iOS devices; data synchronizing can happen automatically and wirelessly through Apple's iCloud service. The most recent update, iOS 9.3.4, was released on August 4, 2016 (2016-08-04), featuring security fixes.[1]


Apple's iOS did not have an official name until the release of the iPhone software development kit (iPhone SDK) on March 6, 2008. Before then, Apple marketing literature simply stated that their iPhone runs a version of OS X, a reference to iOS' parent operating system.[2] When introduced, it was named iPhone OS. It was renamed iOS on June 7, 2010, as, with the introduction of the iPad, and the existence of the iPod Touch, the iPhone was no longer the only device to run the mobile operating system. iOS 4 was the first major release to reflect this change.[3] Apple licensed the "iOS" trademark from Cisco Systems.[4]


In June 2007, Apple released the first version of what became iOS – concurrently with the first iPhone. The final 1.x series release was 1.1.5, released shortly after version 2.0.

July 11, 2008 saw the public release of iPhone OS 2.0, with upgrades through version 2.2.1 made available.

June 17, 2009 was the release date for iPhone OS 3.0. It was updated through (and including) version 3.1.3 (release date February 2, 2010).[5] The first generation iPod Touch and iPhone have iPhone OS 3.1.3 as their newest available version. All iOS versions from 3.2 until 4.0 were made specifically for the iPad.

On June 21, 2010, iOS 4.0 (formerly iPhone OS) was released to the public and was made available only to the iPod Touch and iPhone. iOS 4.0 was announced to have over 1500 new APIs for developers, with the highly anticipated multitasking feature.[6] The iPod Touch (2nd generation) and iPhone 3G have iOS 4.2.1 as the final version available. Nevertheless, many features are not available for the iPhone 3G or iPod Touch (2nd generation), such as multitasking and home screen backgrounds. iOS 4.2 is the first version to bring major feature parity to the iPhone and iPad. The release of the CDMA iPhone for Verizon Wireless saw a branching of iOS. The 4.2 version sequence continued for the CDMA phone while 4.3 was released for all other products

On June 6, 2011, Apple previewed iOS 5, Apple TV 4.4 beta and the iOS SDK 5 beta along with iCloud beta among other products. This update introduced iMessage chat between devices running iOS 5, a new notification system, Newsstand subscriptions, Twitter integrated into iOS, Reminders app, Enhancements to AirPlay, full integration with iCloud and over 200 new features. iOS 5.0 supports all iPad models, iPhone 3GS, iPhone 4 GSM & CDMA, iPhone 4S, and the iPod Touch (3rd & 4th generation).

iOS 5 had only three minor additions, 5.0.1, 5.1, and 5.1.1, which were all provided as OTA and iTunes software updates.

Apple concurrently provides the same version of iOS for the comparable model of iPhone and iPod Touch, usually devices released in the same calendar year. iPhone users receive all software updates for free, while iPod Touch users paid for the 2.0 and 3.0 major software updates. As of iOS 4.0, Apple no longer charges money for iPod Touch updates.[7]

As of October 23, 2011, two versions of iOS were never released. iPhone OS 1.2, which after the first beta was replaced by a 2.0 version number; the second beta was named 2.0 beta 2 instead of 1.2 beta 2. The other was iOS 4.2, replaced with 4.2.1 due to a Wi-Fi bug in 4.2 beta 3, causing Apple to release 2 golden masters (4.2 GM and 4.2.1 GM).[8] One version of iOS was pulled back by Apple after being released. iOS 8.0.1 was pulled back by Apple because cellular service and Touch ID were disabled on iPhone 6 and iPhone 6 Plus.

Current versions[edit]

Legend:   Discontinued   Current   Beta
Version Build Release date Terminal update for
iPhone iPod Touch iPad iPad Mini Apple TV
1.1.5 4B1 July 15, 2008 (2008-07-15) N/A N/A N/A N/A N/A
2.2.1 5H11 January 27, 2009 (2009-01-27) N/A N/A N/A N/A N/A
3.1.3 7E18 February 2, 2010 (2010-02-02) iPhone (1st generation) iPod Touch (1st generation) N/A N/A N/A
4.2.1 8C148 November 22, 2010 (2010-11-22) iPhone 3G iPod Touch (2nd generation) N/A N/A N/A
5.1.1 9B206 May 7, 2012 (2012-05-07) N/A iPod Touch (3rd generation) iPad (1st generation) N/A N/A
6.1.6 10B500 February 21, 2014 (2014-02-21) iPhone 3GS iPod Touch (4th generation) N/A N/A N/A
7.1.2 11D257 (Apple TV Software 6.2.1)
June 30, 2014 (2014-06-30) iPhone 4 N/A N/A N/A Apple TV (2nd generation)
8.4.1 12H523 (Apple TV Software 7.2.1) February 25, 2016 (2016-02-25) N/A N/A N/A N/A Apple TV (3rd generation)
9.3.4 13G35 August 4, 2016 (2016-08-04) iPhone 4s iPod Touch (5th generation) iPad (2nd generation)

iPad (3rd Generation)

iPad Mini (1st generation) N/A
10.0 Developer Beta 7 14A5345a August 19, 2016 (2016-08-19) N/A N/A N/A N/A N/A
10.0 Public Beta 6 14A5345a August 19, 2016 (2016-08-19) N/A N/A N/A N/A N/A

Version history: iPhone, iPad, and iPod Touch[edit]

Legend:   Obsolete   Discontinued   Current   Beta   Withdrawn

iPhone OS 1[edit]

Main article: iPhone OS 1

First iteration of Apple's touch-centric mobile operating system. No official name is given on its initial release; Apple marketing literature simply stated the iPhone runs a version of Apple's desktop operating system, OS X.[2] On March 6, 2008, with the release of the iPhone software development kit (iPhone SDK), Apple named it iPhone OS (they went on to rename it "iOS" on June 7, 2010).[3] Support of iPhone OS 1 ended in 2010.

iPhone OS 2[edit]

Main article: iPhone OS 2

iPhone OS 2, the second major release of iOS, became available on July 11, 2008 with the release of the iPhone 3G. Devices running 1.x are upgradable to this version. This version of the OS introduces the App Store, making third-party applications available to the iPhone and iPod Touch. Prior to the public release of iPhone OS 2.0, Apple held a keynote event to announce the iPhone OS Software Development Kit ("SDK") to developers. Support of iPhone OS 2 has ended in 2011.

iPhone OS 3[edit]

Main article: iPhone OS 3

iPhone OS 3.0 became available with the iPhone 3GS. It was released on June 17, 2009. This release added features such as copy and paste, and MMS. Not all features were available on the original iPhone. Devices running iPhone OS 2.x were upgradeable to this software. The final release supported on the original iPhone and iPod Touch is iPhone OS 3.1.3.[35] The iPad was introduced with iOS 3.2.[36] Support of iPhone OS 3 has ended in late 2012.

iOS 4[edit]

Main article: iOS 4

iOS 4 was made available to the public for the iPhone and iPod Touch on June 21, 2010. This is the first major iOS release to drop support for some devices (original iPhone and iPod Touch) and that iPod Touch users do not have to pay for.

The iPhone 3G and iPod Touch (2nd generation) have limited features, including lack of multitasking capabilities and the ability to set a home screen wallpaper, while the iPhone 4, iPhone 3GS, iPod Touch (3rd & 4th generation) have all features enabled, such as multitasking. The iPhone and iPod Touch (1st generation) cannot run iOS 4.0 and above.

iOS 4.2.1, released November 22, 2010, added iPad compatibility. It was the initial release on the iPad 2. It also was the last version to support iPhone 3G and iPod Touch (2nd generation). iOS 4.2.1 replaced iOS 4.2 due to a Wi-Fi bug in iOS 4.2 beta 3, causing Apple to release 2 golden masters (4.2 GM and 4.2.1 GM).

iOS 5[edit]

Main article: iOS 5

iOS 5 was previewed to the public on June 6, 2011.[71] It was released for iPhone 3GS, iPhone 4 (GSM and CDMA), iPhone 4S, iPod Touch (3rd & 4th generation), iPad, and iPad 2 on October 12, 2011.[72]

iOS 5.1.1 is the final release supported for the iPad (1st generation) and iPod Touch (3rd generation).

iOS 6[edit]

Main article: iOS 6

iOS 6 was announced and previewed on June 11, 2012 during Apple Worldwide Developers Conference (WWDC) 2012, and its release was stated as Fall 2012. Following the pattern of prior iOS releases, some older devices were no longer supported, specifically the iPod Touch (3rd generation), and the iPad (1st generation). Supported devices include the iPhone 3GS and later; the iPod Touch (4th generation) and later; and the iPad 2 and later.[83] iOS 6 has limited support on the iPhone 3GS, iPad 2, and iPod Touch (4th generation).

On September 12, 2012 at San Francisco's Yerba Buena Center for the Arts, among other items unveiled, Apple announced three iOS-related items: the next generation iPhone 5, the redesigned iPod Touch (5th generation), and the announcement of the release of iOS 6.0 the following week.[84]

iOS 6 was released to the public on September 19, 2012, through iTunes and over-the-air updates.

iOS 6.1.6 is the final release supported for the iPhone 3GS and iPod Touch (4th generation).

iOS 7[edit]

Main article: iOS 7

Apple announced iOS 7 on June 10, 2013 at its annual Apple Worldwide Developers Conference (WWDC) event, with release announced for sometime in Fall (Northern Hemisphere) or Spring (Southern Hemisphere) 2013. At their iPhone event on September 10, 2013, Apple announced the full release of iOS 7 for September 18, 2013, while also unveiling two new iPhone models: the iPhone 5C and iPhone 5S. With this release, support was again dropped for older devices, specifically the iPhone 3GS (due to hardware limitations) and the iPod Touch (4th generation) (due to performance issues). Supported devices on this release include the iPhone 4 onwards, iPod Touch (5th generation), the iPad 2 onwards, and the iPad Mini (1st generation) onwards. iOS 7.1.2 is the final release on the iPhone 4.

iOS 8[edit]

Main article: iOS 8

Apple announced iOS 8 on June 2, 2014 at its annual Apple Worldwide Developers Conference (WWDC) event, with release announced for sometime in Fall (Northern Hemisphere) or Spring (Southern Hemisphere) 2014. At their iPhone event on September 9, 2014, Apple announced the full release of iOS 8 for September 17, 2014, while also unveiling the iPhone 6 and iPhone 6 Plus. With this release, Apple resumed the cycle of dropping support for older devices, specifically the iPhone 4. Supported devices on this release include the iPhone 4S onwards, iPod Touch (5th generation) onwards, the iPad 2 onwards, and the iPad Mini (1st generation) onwards. iOS 8 has limited support on the iPad 2, iPhone 4S, and the iPod Touch (5th generation). iOS 8 was also the first version of iOS to have public beta testing be available, not just to developers. The first ever public beta was iOS 8.3 Public Beta 1. All major updates from this one on will receive public beta releases; minor ones don't usually receive them. The final version of iOS 8 is iOS 8.4.1. This release fixed some bugs present with Apple Music and patched TaiG Jailbreak.

iOS 9[edit]

Main article: iOS 9

Apple announced iOS 9 on June 8, 2015 at its annual Apple Worldwide Developers Conference (WWDC) event, with public release on September 16, 2015. With this release, Apple did not drop support for any iOS devices, with all devices supporting iOS 8 being eligible for an upgrade. Supported devices on this release include the iPhone 4S onwards, iPod Touch (5th generation) onwards, the iPad 2 onwards, and the iPad Mini (1st generation) onwards, making iOS 9 have the most supported devices out of any other iOS release, with 22 devices. The iPad 2 is also the first iOS device to support six major releases of iOS, supporting iOS 4 to 9. This is the greatest amount of major iOS releases a single iOS device has supported, surpassing the iPhone 4S which supports five major releases (iOS 5 to 9), and iPod Touch (5th generation) supporting four major releases (iOS 6 to 9). However, iOS 9 has limited support on all 32-bit devices (iPhone 4S, iPhone 5, iPhone 5c, iPad 2, iPad 3rd generation, iPad 4th generation, iPad Mini, and iPod touch 5th generation).

Table of versions: iOS 9.x – iPhone, iPad, iPod Touch
iPhone family:
iPod family:

Limited support on iPad 2, iPad (3rd generation), iPad Mini (1st generation), iPhone 4S, and iPod Touch (5th generation)[117]

Version Build Baseband Release date Features
9.0 13A340 M4 M4C

13A342 P6S
13A343 P6SP
13A344P4S P5 P5C P5S P6 P6P T5 T6 S2 S2C S2D S3 S3L S3D S4 S4L S4D S5 S5L S5D S6 S6L S6D M1 M1C M2 M2C M3 M3C

04.12.09 S2C

3.0.04 S2D
5.3.04 P4S
5.2.03 S3L S3D
10.00.00 P5 S4L S4D M1C
5.00.11 P5C
6.00.00 P5S S5L S5D M2C M3C
4.01.00 P6 P6P M4C
1.00.05 P6S P6SP

September 16, 2015; 11 months ago (2015-09-16) Initial release on iPhone 6S, iPhone 6S Plus, and iPad Mini 4
  • iPhone 4S and iPad 2 was advertised a speed boost, including other 32-bit devices.
  • App Store
    • App Store reviews no longer allowed when using a beta version of iOS.
    • App Thinning allows the App Store to only download the assets needed for the device being used.
    • On-demand resources allows iConnect to host assets for later download.
  • CarPlay
    • Adds support for wireless CarPlay.
    • Lets users access the car's settings (such as climate control) through the CarPlay interface itself.
    • Battery level indicator added to onscreen display.
    • Plays back audio messages, letting the user hear from people in their own voices.
    • Full support for car knob controls, so the user can tilt and spin to scroll through lists or pan around in Maps.
  • Find My Friends
    • Find My Friends is now pre-installed.
    • Notification Center Widget.
  • Find My iPhone
    • Find My iPhone is now pre-installed.
  • Health
    • Added landscape view.
    • Adds support for reproductive health, UV exposure, water intake and sedentary state data types.
  • iBooks
    • Safari extension to turn a webpage into a PDF and open it in iBooks.
  • Mail
    • Attachments receive can now be saved and attachments can be added to messages from iCloud Drive or other document providers while composing a new message.
    • Support for saving attachments to iCloud Drive.
    • Icons added to left and right swipe gestures.
    • Support for Markup allows annotating images or PDF attachments with text, shapes, or signatures.
  • Maps
    • Support for public transit lines, station details with exits and entrances, schedules and directions in select major cities. Also, popular places such as restaurants, stores, and points of interests will be highlighted and presented to the user in a central location.
    • Apple Pay support is indicated on place cards at participating retail locations.
    • Adds support for "Follow up by Email" that allows Apple to email users about issues reported.
    • Browse for places nearby by category, including Food, Drinks, Shopping, Fun and more.
    • Place cards include Wikipedia information for landmarks and cities.
  • Messages
    • Contact Pictures in list view.P6.
    • Redesigned overlay when sending an audio clip.
  • Music
    • Stream High Quality option in Music Settings.
    • Home Sharing returns (removed in iOS 8.4).
    • Updated design of share menus.
  • News
    • Adds a new app named News which provides curated lists of personalized news content for iOS users, offering content from popular websites and newspapers and displaying it in an iOS-friendly layout. This app replaces the Newsstand app.[118]
  • Notes
    • Add photos to notes with the built-in camera or from the Photo Library.
    • Support for hand-drawn sketches, checklists, and inserting photos from the internet or the Camera Roll.
    • Adds different fonts for headings, body, and titles.
    • Recently deleted folder.
    • Share Sheet extension that allows a user to input text, pictures, or other attachments from anywhere in the system via an extension in the share sheet.
  • Notification Center/Notifications
    • Notifications are no longer sorted by application by default, instead being sorted by day starting with recent notifications.
  • Phone
    • Adds WiFi Calling support for iPhone users on AT&T. This feature was formerly limited to T-Mobile and Sprint users.[119]
  • Support for Wi-Fi calling on iPad, iPod Touch and Mac, without iPhone in proximity on participating carriers.
  • Photos
    • Added preview scrubber bar to photo viewer.
    • Screenshots and Selfies albums added.
    • Hide photo added to Share Sheet.
    • Ability to hold and select multiple photos.
  • Podcasts
    • The Podcasts app has a new Unplayed tab which will show podcasts which have not yet been played.
    • All-new design to make it easier to find the latest episodes.
    • Notification when new episodes become available.
  • Reminders
    • Share Sheet extension.
    • Shows number of overdue items for each list next to title.
  • Safari
  • Settings
    • Settings can now be searched.
    • There are now video recording settings to change the quality of recorded videos.
    • There is a new iCloud Drive app which can be enabled in the iCloud Settings.
    • Battery moved to the top level.
    • Updated Notifications icon.
    • Additional options for Auto-Lock.
  • Wallpapers
    • Adds 15 new wallpapers to iOS which replaces most of the wallpaper present in iOS 8.
    • When changing wallpapers, there is a new "Still" option which keeps the wallpaper still.
  • Wallet
    • Replaces the Passbook app with a new app named Wallet and enhances the features of Apple Pay with support for Discover credit/debit card, store loyalty card, and Apple Pay in the UK.[120]
    • To check out even faster, upcoming payments can be prepared by double-clicking the Home button from the Lock Screen and keeping the finger on Touch ID.
  • Watch
    • Renamed from Apple Watch.
    • Updated haptic feedback icons.
  • Battery improvements
    • Up to one hour of additional time before the battery needs to be charged.
    • Facedown detection for turning display off when not in use.
    • New Low Power Mode (iPhone only) disables Background App Refresh, Mail Fetch, Motion Effects, and Animated Wallpapers. It also extends device's battery life by up to three hours.P4S P5 P5C P5S P6 P6P P6S P6SP[117]
    • Low Power Mode turns off when device is connected to a power source.
    • Notification Center Widget (when paired with Apple Watch).
  • Intelligence improvements
    • Proactive assistance.P5 P5C P5S P6 P6P T6 S4 S5 S6 M2 M3[121]
      • Presents relevant information even before the user starts typing.
      • Notifies the user when the user needs to leave for appointments using traffic conditions.
      • Learns what the user listens to in a certain location or at a particular time of day and can automatically display playback controls for preferred music and audio apps.
      • Suggested events and contact details are added to apps based on information found in Mail.
    • Siri.
      • Siri has a new colorful interface, similar to that of the Apple Watch.
      • Removed sound from Siri activation.
      • Updated Siri icon in Settings.
      • Search personal photos and videos based on dates, locations and album names.
      • Ask Siri to remind about things being looked at in apps, including Safari, Mail, Notes and Messages.
      • Request directions via public transit.
      • Siri can now use an accent (same language) which differs from the input language.
      • Siri no longer asks for confirmation of reminders that are created.
    • Spotlight Search.
      • A more intelligent Spotlight search provides info such as Weather, News, Stocks, nearby places, and recent/favorite contacts based on the user's preference. Spotlight search can be activated by swiping to the right on the first page of the home screen or swiping down on any page of the home screen.P5 P5C P5S P6 P6P T6 S4 S5 S6 M2 M3
      • Perform tasks such as currency conversions and calculations.
      • Get sports scores, weather conditions and stock prices.
      • Initiate messages, phone calls and FaceTime calls from contact search results.
  • iPad experience improvements
    • Slide Over.S5 S6 M2 M3 M4
      • Quickly use a second app without leaving the current one.
      • Easily switch between Slide Over apps.
      • Support for Apple apps and enabled third party apps.
    • Split View.S6 M4
      • View and interact with two apps at once.
      • Ability to resize view to give equal attention to both apps or prioritize one app over another.
      • Support for Apple apps and enabled third party apps.
    • Picture in picture.S5 S6 M2 M3 M4
      • Continue watching a video while using favorite apps.
      • Support for Safari video, FaceTime, Videos and Podcasts and enabled third party apps.
    • QuickType improvements.
      • Multi-Touch gestures for easier text selection on iPad.
      • Quick access to text editing tools with Shortcut Bar on iPad.
      • Support for hardware keyboard shortcuts.
      • Support for all Unicode emoji flags.
      • Support for Alt Tab / Cmd Tab.
    • Folders on iPad use a 4x4 layout rather than 3x3.
    • Redesigned notification center view when in landscape.
  • Keyboard improvements
    • New keyboard now displays whether the letters are upper-case or lower-case depending on whether the Shift key has been toggled or not.
    • Cut/Copy functions on the keyboard have been replaced with an Undo/Redo button. The Cut/Copy buttons still appear when text is selected.
    • Over 50 new flag emojis.
    • A "deep press" (3D touch) on the keyboard will convert the keyboard to a track pad to move the cursor and make it easier to manipulate text. (6S and 6S Plus only)
    • Ability to disable character preview.
  • Performance and stability improvements.
    • Extends the battery life of iOS devices by an extra hour.
    • Minimizes iOS update file size to 1.3 GB.
    • Improves performance on iOS devices by utilising Metal API throughout iOS to deliver faster scrolling, smoother animation, and better overall performance.
    • Reduced touch latency from sixty milliseconds to less than thirty milliseconds.[122]
  • Security improvements
    • Touch ID devices now use a 6-digit passcode by default, though a 4-digit option is still available alongside options for a passcode with a custom number of digits and an alphanumeric passcode.P5S P6 P6P S6 M3[123]
    • Adds 2-factor authentication for iCloud on iOS.
    • Adds support for add a IKEv2 VPN directly in Settings without need for third-party app.[124][125]
  • Other improvements
    • Print preview screen. Allows the user to view all pages, select which pages to print, and print in black and white.
    • Leave a message option if recipient isn’t available for a FaceTime call.
    • Share voicemails from the Phone app using the share sheet.
    • Added confirmation dialog when an app attempts to open another app.
    • Support for right-to-left languages.
    • Flight and package tracking for data detectors[126]
    • iCloud Drive app.
      • Easily search for a file or browse in the new iCloud Drive app by date, name, or tags added on associated Mac.
      • Open files in any compatible app.
      • Organize folders and files.
      • Get the iCloud Drive app in Settings > iCloud > iCloud Drive and select Show on Home Screen.
    • Wi-Fi Assist to automatically use cellular data when Wi-Fi connectivity is poor.
  • UI changes
    • 3D Touch. (6S and 6S Plus only)
    • Helvetica Neue font used in iOS 7/8 replaced by San Francisco font used on Apple Watch.
    • It is possible to go directly back to a formerly used app if a link opens another app.
    • Recent Contacts have been removed from the multitasking UI. They have now been placed in the new Proactive Menu.
    • Handoff is now displayed as a pull up menu in the app switcher.
    • Redesigned Voice Control audio waveform.
    • Redesigned audio dictation audio waveform.
  • Expanded language support
    • New PingFang Chinese system font.
    • Improved predictions, learning and autocorrection for Chinese in QuickType.
    • Redesigned punctuation input on 10-key Chinese keyboard.
    • Redesigned User Interface for right-to-left languages.
    • Added Siri support for Austria, Belgium (French and Dutch), and Norway.
    • Added Spotlight search support for Mexico.
    • New keyboards for French (Belgium), German (Austria), Gujarati, Hindi (Transliteration), Hinglish, Punjabi, Spanish (Mexico), and Telugu.
    • Predictive input for French (Belgium), German (Austria), Korean, Russian, Spanish (Mexico), and Turkish.
    • Dictation support for Dutch (Belgium), English (Ireland, Philippines, South Africa), French (Belgium), German (Austria), and Spanish (Chile, Colombia).
    • Spell check for Finnish and Korean.
    • Definition dictionary for Hindi, Norwegian and Swedish.
    • Bilingual dictionary for French-English and German-English.
    • New Japanese autocorrection and improved predictions and learning in QuickType.
    • Option to switch between number systems for Arabic and Hindi.
  • Enterprise & Education
    • DEP (Device Enrolment Program) Support added for 26 countries.
    • Assign apps directly to iOS devices without needing to have an iTunes Store account configured.
    • Improved calendar reliability for customers using Microsoft Exchange ActiveSync v16.
    • Expanded Per App VPN support for the built-in IPSec and IKEv2 VPN clients.
    • New networking controls for managed apps to help limit international data roaming costs.
    • New restrictions to prevent changes to passcodes, device names and wallpapers, or to disable AirDrop on managed devices.
    • Third party app extension support for VPN, advanced content filtering, and captive Wi-Fi networks.
  • Accessibility
    • Touch Accommodations provides additional touch control for those with physical motor limitations.
    • Speak Selection and Speak Screen can now use Siri voice.
    • Ability to customise Assistive Touch menu.
    • Support for hardware keyboard sticky keys, key repeat, and slow keys.
    • Ability to show only uppercase keys or case correct keys.
    • Ability to disable vibrations.
    • Ability to disable Shake to Undo.
    • Improved MFi hearing aid audio routing to choose where audio is played.
  • Apple Developers – iOS SDK 9.0
    • Support for Swift 2.0.
    • ReplayKit.
      • Allows recording gameplay in the background to enable sharing of short video clips of gameplay.
    • GameplayKit.
    • Model I/O.
    • Support for text input Notification Actions in 3rd party apps.
    • Search extension.
    • MapKit.
      • Access to 3D flyover view.
      • Access to traffic data.
    • ResearchKit iPad support.
    • HomeKit.
      • Support for additional devices.
      • Predefined scenes.
        • Wake up.
        • Leave Home.
        • Arrive Home.
        • Bed.
    • Test on device.
    • Predictive Touch.
    • CloudKit integration.
  • Can be jailbroken by Pangu 9 Fuxi Qin.[127]
9.0.1 13A404 M4 M4C P4S P5 P5C P5S P6 P6P T5 T6 S2 S2C S2D S3 S3L S3D S4 S4L S4D S5 S5L S5D S6 S6L S6D M1 M1C M2 M2C M3 M3C

13A405 P6S P6SP

04.12.09 S2C

3.0.04 S2D
10.00.00 P5 S4L S4D M1C
6.00.00 S3L S3D P4S P5C P5S S5L S5D M2C M3C
4.01.00 P6 P6P M4C
1.00.05 P6S P6SP

September 23, 2015; 10 months ago (2015-09-23) (13A404)

September 24, 2015; 10 months ago (2015-09-24) (13A405)

  • Fixes an issue where some users could not complete setup assistant after updating.
  • Fixes an issue where sometimes alarms and timers could fail to play.
  • Fixes an issue in Safari and Photos where pausing video could cause the paused frame to appear distorted.
  • Fixes an issue where some users with a custom APN setup via a profile would lose cellular data.
  • Can be jailbroken by Pangu 9 Fuxi Qin.[127]
9.0.2 13A452 04.12.09 S2C

3.0.04 S2D
10.00.00 P5 S4L S4D M1C
6.00.00 S3L S3D P4S P5C P5S S5L S5D M2C M3C
4.01.00 P6 P6P M4C
1.00.05 P6S P6SP

September 30, 2015; 10 months ago (2015-09-30)
  • Fixes an issue with the setting to turn on or off app cellular data usage.
  • Resolves an issue that prevented iMessage activation for some users.
  • Resolves an issue where an iCloud backup could be interrupted after starting a manual backup.
  • Fixes an issue where the screen could incorrectly rotate when receiving notifications.
  • Improves the stability of Podcasts.
  • Fixes an issue where a lock screen issue allowed access to photos and contacts on a locked device.
  • Can be jailbroken by Pangu 9 Fuxi Qin.[127]
9.1 13B143 04.12.09 S2C

3.0.04 S2D
10.00.00 P5 S4L S4D M1C
6.0.00 S3L S3D P4S
6.01.00 P5C P5S S5L S5D M2C M3C
4.32.00 P6 P6P
1.14.00 R1C P6S P6SP

October 21, 2015; 9 months ago (2015-10-21) Initial release on iPad Pro
  • Live Photos now intelligently senses when the iPhone is raised or lowered, so that Live Photos will automatically not record these movements.
  • Over 150 new emoji characters with full support for Unicode 7.0 and 8.0 emojis.
  • Improved stability including CarPlay, Music, Photos, Safari, and Search.
  • Improved performance while in Multitasking UI.
  • Fixes an issue that could cause Calendar to become unresponsive in Month view.
  • Fixes an issue that prevented Game Center from launching for some users.
  • Resolves an issue that zoomed the content of some apps.
  • Resolves an issue that could cause an incorrect unread mail count for POP mail accounts.
  • Fixes an issue that prevented users from removing recent contacts from new mail or messages.
  • Fixes an issue that caused some messages to not appear in Mail search results.
  • Resolves an issue that left a gray bar in the body of an audio message.
  • Fixes an issue that caused activation errors on some carriers.
  • Fixes an issue that prevented some apps from updating from the App Store.
  • Originally patched the Pangu iOS 9 jailbreak, however the Pangu team released an update with support for iOS 9.1 on 64 bit devices.
9.2 13C75 04.12.09 S2C

3.0.04 S2D
10.00.00 P5 S4L S4D M1C
6.0.00 S3L S3D P4S
6.01.00 P5C P5S S5L S5D M2C M3C
4.52.00 P6 P6P M4C
1.23.00 R1C P6S P6SP

December 8, 2015; 8 months ago (2015-12-08)
  • Only supports iTunes 12.3 or higher, and thus does not work anymore together with iTunes on Mac OS X 10.7 or lower.
  • Apple Music improvements
    • Ability to create a new playlist when adding a song to a playlist.
    • Most recently changed playlist is now listed at the top when adding songs to playlists.
    • Ability to download albums or playlists from your iCloud Music Library by tapping the iCloud download button.
    • New download indicator next to each song in My Music and Playlists.
    • See works, composers, and performers while browsing Classical music in the Apple Music catalog.
  • New Top Stories section in News application (available in the US, UK, and Australia).
  • Mail Drop in Mail for sending large attachments.
  • iBooks now supports 3D Touch to peek and pop pages from the table of contents, notes and bookmarks, or from search results inside a book.
  • iBooks now supports listening to an audiobook while browsing the library, reading other books, or exploring the iBooks Store.
  • iPhone support for the USB Camera Adapter to import photos and videos.
  • Safari Improved stability.
  • Podcasts Improved stability.
  • Fixed an issue that caused mail attachments to be inaccessible for some users with POP email accounts.
  • Resolved an issue that caused attachments to overlap text in mail.
  • Fixed an issue where Live Photos could have turned off after restoring from a prior iCloud backup.
  • Addressed an issue that could cause search in Contacts to display no results.
  • Resolved an issue that could have prevented Calendar from displaying all seven days in week view.
  • Fixed an issue where Camera screen on iPad could be black when attempting to capture video.
  • Addressed an issue that could cause instability in the Activity app when viewing the day of Daylight Savings Time transition.
  • Fixed an issue that could prevent data from appearing in Health.
  • Fixed an issue that could prevent Wallet updates and Lock screen alerts from displaying.
  • Addressed an issue where updating iOS could prevent an alarm from going off.
  • Fixed an issue where some users were unable to log in to Find My iPhone.
  • Fixed an issue that prevented some manual iCloud Backups from completing.
  • Addressed an issue where using the iPad keyboard could unintentionally trigger text selection mode.
  • Improved keyboard responsiveness when using Quick Reply.
  • Improved punctuation input on the 10-key Chinese (Pinyin & Stroke) keyboards with new expanded view of punctuation symbols and better predictions.
  • Fixed an issue on Cyrillic keyboards where caps lock would be enabled when typing in URL or email fields.
  • Siri support for Arabic (Saudi Arabia, United Arab Emirates).
  • Accessibility improvements
    • Fixed issues with VoiceOver when using Camera face detection.
    • Added support for VoiceOver to wake up the screen.
    • Added support for VoiceOver to invoke app switcher with 3D Touch gesture.
    • Fixed an issue with Guided Access when trying to end phone calls.
    • Improved functionality for Switch Control users when using 3D Touch.
    • Fixed an issue with speech rate of Speak Screen.
  • SFSafariViewController now supports 3rd party Action Extensions. Any Action Extension that works in Safari will also work in SFSafariViewController.
  • Long tapping the Reload button in Safari View Controller now gives options to Reload Without Content Blockers and Request Desktop Site, like in Safari.
  • Fixed an issue where WebApps saved to the home screen would not respect the apple-mobile-web-app-status-bar-style meta tag.
9.2.1 13D15

13D20 P6 P6P P6S P6SP M3 M3C M4 M4C R1 R1C S6 S6L

04.12.09 S2C

3.0.04 S2D
10.00.00 P5 S4L S4D M1C
6.0.00 S3L S3D P4S
6.01.00 P5C P5S S5L S5D M2C M3C
4.52.00 P6 P6P M4C
1.23.00 R1C P6S P6SP

January 19, 2016; 7 months ago (2016-01-19)
  • General bug fixes and security patches.
  • iTunes re-issue on February 18, 2016 (build 13D20) addresses rare "Error 53" on iPhone 6.[128]
9.3 13E233

13E234 R2 R2C P6S P6SP
13E236 S2C
13E237 P4S P5 P5C P5S [129]

04.12.09 S2C

3.0.04 S2D
10.01.00 P5 S4L S4D M1C
6.1.00 S3L S3D
6.0.00 P4S
6.02.00 P5C P5S S5L S5D M2C M3C
4.71.00 R1C P6 P6P M4C
1.60.00 R2C P6S P6SP

March 21, 2016; 5 months ago (2016-03-21)

March 25, 2016; 4 months ago (2016-03-25) (13E236)
March 28, 2016; 4 months ago (2016-03-28) (13E237)

Initial release on the iPhone SE and iPad Pro (9.7 inch)
  • Night Shift (only available on 64-bit devices).P5S PSE P6 P6P P6S P6SP T6 S5 S6 R1 R2 M2 M3 M4
    • Adds support for a new feature named Night Shift which, manually or automatically (based on user preference), makes the display color warmer so it is easier to view at night. Users can adjust the color temperature in the Settings app.
  • Control Center
    • Adds toggle for Night Shift mode on supported devices.
      • Night Shift toggle redesign in Beta 4.
  • Notes
    • Adds support for protecting notes inside the Notes app with a passcode or Touch ID.
  • News
    • News delivers stories that are better curated to a user's tastes.
    • News suggests editors' and top picks to users at the top.
    • When checking for updates, News refreshes much faster.
    • If a story contains video, it is possible to view it directly from your feed.
    • Support for landscape viewing on iPhone.
    • News appears in additional countries.[130]
  • Apple Watch
  • Health
    • Easier app discovery with the Health app.
    • Health now includes data from the Apple Watch and Activity app.
  • Photos
    • When removing a photo from an album, users are given a choice to remove the photo or to delete it.
  • CarPlay
    • Adds support for the For You and New tabs in the Music section of CarPlay
    • Adds the Nearby feature in Maps which quickly lets you discover points-of-interest nearby.
  • Classroom Enhancements
    • Adds support for multi-user logons in schools so any student can log in (with a passcode) to an iPad issued by the school.
    • Adds a new Classroom app for those devices registered with schools which allows teachers to guide students through a lesson, see their progress, keep them on track, present quizzes and tests, and wirelessly display their work with AirPlay and Apple TV.
    • Adds support for a device manager in which school administrators can set up multiple Apple IDs, change passwords, enroll students in iTunes U courses, etc.
  • New 3D Touch shortcuts added for Health, App Store, iTunes, Settings, Weather, Stocks, and Compass apps.
  • Safari 9.1.[131]
  • Wi-Fi calling enabled for Verizon[130]
  • Improvements to stability and performance.
  • Fixes an issue where manually changing the date to May 1970 or earlier could prevent 64-bit devices from turning on after a restart.[132]
  • Fix CVE-2016-1788, a security vulnerability that allowed an attacker to decrypt iMessage attachments, by rejecting replay attempts.
  • Build 13E236 and 13E237 were issued to devices that were affected by the Activation Lock bug. These re-issued builds helped correct the issue after the prior builds were withdrawn.
9.3.1 13E238 04.12.09 S2C

3.0.04 S2D
10.01.00 P5 S4L S4D M1C
6.1.00 S3L S3D
6.0.00 P4S
6.02.00 P5C P5S S5L S5D M2C M3C
4.71.00 R1C P6 P6P M4C
1.60.00 R2C P6S P6SP

March 31, 2016; 4 months ago (2016-03-31)
  • Fixes an issue that caused apps to be unresponsive after tapping on links in Safari or other apps.
  • Fixes an issue where connecting to a fake Apple time server which sets system time to 1/1/1970 can cause 64-bit devices to overheat and become unresponsive after a restart.[133]
9.3.2 13F69
04.12.09 S2C

3.0.04 S2D
10.01.00 P5 S4L S4D M1C
6.1.00 S3L S3D
6.0.00 P4S
6.02.00 P5C P5S S5L S5D M2C M3C
4.71.00 R1C P6 P6P M4C
1.60.00 R2C P6S P6SP

May 16, 2016; 3 months ago (2016-05-16)
June 2, 2016; 2 months ago (2016-06-02)
  • Bug fixes and improvements to security.
  • Fixes an issue where some Bluetooth accessories could experience audio quality issues when paired to iPhone SE.
  • Fixes an issue where looking up dictionary definitions could fail.
  • Addresses an issue that prevented typing email addresses when using the Japanese Kana keyboard in Mail and Messages.
  • Fixes an issue for VoiceOver users using the Alex voice, where the device switches to a different voice to announce punctuation or spaces.
  • Fixes an issue that prevented MDM servers from installing Custom B2B apps.
9.3.3 13G34 04.12.09 S2C

3.0.04 S2D
10.01.00 P5 S4L S4D M1C
6.1.00 S3L S3D
6.0.00 P4S
6.02.00 P5C P5S S5L S5D M2C M3C
4.71.00 R1C P6 P6P M4C
1.60.00 R2C P6S P6SP

July 18, 2016; 36 days ago (2016-07-18)
  • General bug fixes and improvements
9.3.4 13G35 04.12.09 S2C

3.0.04 S2D
10.01.00 P5 S4L S4D M1C
6.1.00 S3L S3D
6.0.00 P4S
6.02.00 P5C P5S S5L S5D M2C M3C
4.71.00 R1C P6 P6P M4C
1.60.00 R2C P6S P6SP

August 4, 2016; 19 days ago (2016-08-04)
  • Fixes CVE-2016-4654, a memory corruption vulnerability in IOMobileFrameBuffer found by Team Pangu that allows arbitrary code execution with kernel privileges.[134]
Version Build Baseband Release date Features

iOS 10[edit]

Main article: iOS 10

Apple announced iOS 10 on June 13, 2016 at its annual Apple Worldwide Developers Conference (WWDC) event. Apple announced that a public beta program would launch in July 2016. This release of iOS does not support iPhone 4S, iPad 2, iPad 3, iPad Mini (1st generation) or iPod Touch (5th generation).

Table of versions: iOS 10.x – iPhone, iPad, iPod Touch
iPhone family:
iPod family:

Limited support on iPad (4th generation), iPhone 5, and iPhone 5C

Version Build Baseband Release date Features
10.0 Developer Beta 7 14A5345a August 19, 2016; 4 days ago (2016-08-19)
  • Allow hiding home screen icons of most built-in apps
    • Calculator
    • Calendar
    • Compass
    • Contacts
    • FaceTime
    • Find My Friends
    • Home
    • iBooks
    • iCloud Drive
    • iTunes Store
    • Mail
    • Maps
    • Music
    • News
    • Notes
    • Podcasts
    • Reminders
    • Stocks
    • Tips
    • Videos
    • Voice Memos
    • Watch app
    • Weather
  • Improved Apple Maps
  • Improved Apple Music
  • Improved iMessage
  • Improved Phone
  • Improved Photos
  • Improved Siri
  • QuickType Keyboard
  • Redesigned Control Center
  • New Sounds
    • Locking device
    • Keyboard Clicks
  • Lock Screen
    • Raise device to activate Lock Screen
    • Swipe left to open Camera
    • Swipe right for Today view
    • Press home button to unlock device
Version Build Baseband Release date Features

Version history: Apple TV (2nd generation)[edit]

Legend:   Obsolete   Discontinued   Current   Beta

Information about new updates to Apple TV (2nd generation) onwards is published on Apple's knowledge base.[135]

iOS 4[edit]

iOS 4.1 was the first version of iOS available on the Apple TV (2nd generation). It included Apple TV Software 4.0.[135]

iOS 5[edit]

On October 23, 2011, Apple TV (2nd generation) received the iOS 5.0 software, with My Photo Stream, AirPlay mirroring (from iPhone 4S & iPad 2), NHL, Wall Street Journal, slideshow themes and Netflix subtitles.[135][136] Contrary to rumors and code found in iOS 5, the release did not bring support for Bluetooth or apps to the Apple TV (2nd generation).[137]

iOS 6[edit]

On September 24, 2012, Apple TV (2nd generation) onwards received the iOS 6.0 software update, with Shared Photo Streams, iTunes account switching, better AirPlay functionality, and Trailers searching, among other smaller improvements.

iOS 7[edit]

On September 20, 2013, Apple TV (2nd generation) onwards received the iOS 7.0 software update, with iTunes Radio and AirPlay from iCloud.

Version history: Apple TV (3rd generation)[edit]

iOS 8[edit]

On September 18, 2014, Apple TV (3rd generation) received the iOS 8.0 software update, with a redesigned UI, Family Sharing and peer-to-peer AirPlay.

Version history: Apple TV (4th generation) onwards[edit]

tvOS 9[edit]

tvOS 9 is an operating system that is 95% based on iOS 9, with adaptations made for a television interface. It was announced on September 9, 2015 alongside the new iPad Pro and iPhone 6S. Tim Cook took the stage and introduced tvOS saying that it was time for the Apple TV to gain a modern OS with support for apps as they are "the future of TV". It will only be available on the Apple TV (4th generation), released in October 2015. It adds a native SDK to develop apps, and an App Store to distribute them, and support for Siri and universal search across multiple apps.

Table of versions: tvOS 9.x – Apple TV (4th generation) only
iOS Version tvOS Version Build Release date Features
9.0 9.0 13T396 October 29, 2015; 9 months ago (2015-10-29)
  • Initial release on Apple TV (4th generation).
  • User Interface
    • Introduces a new user interface that uses lighter colors and transparency, adds support for control via an all new remote. This remote can be used to navigate the user interface by using multi-touch gestures on the trackpad on the remote rather than physical buttons.
  • App Store/SDK
    • Adds support for an all new SDK for developers to build apps for the TV including all of the APIs included in iOS 9 such as Metal.
    • Adds an App Store which allows users to browse, download, and install a wide variety of applications from things such as games, video applications, etc.
    • Developers can now use their own interface inside of their application rather than only being able to use Apple's interface.
  • Siri
    • Adds support for Siri which can be toggled by pressing the microphone button on the remote.
    • Siri, beyond all of its iOS abilities, can take many voice commands tailored for the TV, such as a cross-application search for a movie/TV show, rewind, fast forward, name and actor/director of the current movie, and even skip back 15 seconds.
  • Experience
    • It is now possible to switch between two applications by double-clicking the trackpad on the remote and scrolling to the desired application.
    • Users can now customize the home screen by placing any applications they wish on the top row, including third-party types.
    • New cinematic screen savers display time-lapse images of scenic cities when the Apple TV is asleep.
    • It is now possible to control the volume of the TV and turn it on/off using just the new Siri Remote and the built in support for HDMI CEC in TVOS.
  • Third-Party Controllers
    • Adds support for pairing third-party Bluetooth game controllers in order to play games.
  • Apple Music
    • Adds Apple Music support for Apple TV.
9.1 9.0.1 13T402 November 9, 2015; 9 months ago (2015-11-09)
  • General performance and stability improvements.
9.2 9.1 13U85 December 8, 2015; 8 months ago (2015-12-08)
  • Adds support for controlling Apple Music with Siri.
  • Adds support for controlling the Apple TV with the Remote app for iOS and Apple Watch.
  • Improvements to networking and scrolling.
9.2.1 9.1.1 13U717 January 25, 2016; 6 months ago (2016-01-25)
  • General performance and stability improvements
  • Adds the Podcasts app to the Apple TV
9.3 9.2 13Y234 March 21, 2016; 5 months ago (2016-03-21)
  • Adds support for folders on the Apple TV.
    • A folder can be made by selecting an app, clicking and holding on the touchpad, clicking the Play/Pause button, and then choosing "New Folder" from the popup menu.
  • Adds the ability to pair Bluetooth keyboards with the 4th Generation Apple TV
  • Adds a redesigned application switcher similar to the one found in iOS 9 rather than the one found in iOS 8 as TVOS 9.1 contained.
  • Adds support for iCloud Photo Library and Live Photos
  • Enables developers to add maps to their applications with the use of the MapKit API.
  • Siri/Voice Dictation
    • Adds support for Voice Dictation to enable users to enter text in text fields using their voice. Voice Dictation can be invoked by selecting the text field and pressing the Siri button on the Siri Remote.
    • Adds Support for searching the App Store on the Apple TV using Siri.
    • Adds support for new Siri languages which include Spanish(United States), French(Canada), and English(United Kingdom and Australia).
  • Remote operability improvements
    • In order to rewind/fast forward the video in tvOS 9.2, it is now necessary to click the touchpad before swiping left or right.[154]
    • Updates the remote firmware which includes improved motion sensor performance and support for additional sound bar and receiver hardware.[155]
  • Enhancements to speed and performance.
9.3.2 9.2.1 13Y772 May 16, 2016; 3 months ago (2016-05-16)
  • General performance and stability improvements.
9.3.3 9.2.2 13Y825 July 18, 2016; 36 days ago (2016-07-18)
iOS Version tvOS Version Build Release date Features

tvOS 10[edit]

On June 13, 2016, Apple SVP of Internet Services Eddy Cue announced at WWDC 2016 the next major version of tvOS, tvOS 10. tvOS 10 brings new functionality such as Siri search enhancements, single sign on for cable subscriptions, a dark mode, and a new Remote application for controlling the Apple TV.

Table of versions: tvOS 10.x – Apple TV (4th generation) only
iOS Version tvOS Version Build Release date Features
10.0 Beta 5 10.0 Beta 5 14T5321a August 9, 2016; 14 days ago (2016-08-09)
iOS Version tvOS Version Build Release date Features


Notable software bugs and issues[edit]

iOS 4[edit]

Alarm clock bugs

The Alarm feature of the built in Clock app in the iPhone and iPod Touch has been plagued by major bugs in all versions of iOS 4. The first bug noticed was the "DST bug" which was first seen when some countries switched to/from daylight saving time from/to standard time in October/November 2010.[156][157] It caused recurring alarms to start going off an hour too early or late. Apple promised the bug would be fixed in iOS 4.2 but according to some reports it still exists even in iOS 4.3.1.[158]

The second alarm clock bug discovered was the "New Year's Day bug" which showed up on January 1, 2011 and January 1, 2012. It caused non-recurring alarms to never work.[159] However two days after each New Year's Day, on January 3, 2011, they "magically" started working again. This bug was seemingly fixed in iOS 4.3.[160]

iOS 5[edit]

Battery drain bugs Apple confirmed that several battery life bugs were negatively affecting battery life in iOS 5.[161] They attempted to fix these bugs with iOS 5.0.1 and 5.1 but the problem still remained.[162] Finally, these bugs were fixed in iOS 5.1.1.Wi-Fi The launch of the iOS 5 update on October 12, 2011 (including iOS 5.0.1 released on November 10, 2011) led many users to report a major bug causing the device to lose Wi-Fi access. This problem has supposedly been fixed with the release of iOS 5.1.1[163][164] SIM card Some users of the iPhone 4S and iPad (Wi-Fi + Cellular) reported issues with the SIM card in iOS 5.0,[165] and even though Apple attempted to fix these issues in version 5.0.1 build 9A406 (for iPhone 4S only), they still remained.[166] Echo bugs Some users of the iPhone 4 and iPhone 4S reported issues with having echo problems during phone call in the initial release of iOS 5, which causes echoes to appear randomly during phone calls made through earbuds. The other party in the call is generally unable to hear the conversation due to this problem.[167] Apple has since released version 5.1.1 in an attempt to fix the problem.

iOS 6[edit]

Maps Apple has admitted that there were several bugs in the mapping app on iOS 6, with cities in the wrong location, some places being missed off altogether, some places misnamed and places of interest in the sea.[168][169][170] Problems submitted by users have gradually been addressed with daily updates to Maps.[171] Bluetooth Many users report a problem with Bluetooth audio streaming to a range of compatible devices. The sound cuts out every now and then for no apparent reason. As of October 2012, no solution has been provided by Apple.[172] Location-based Reminders Location-based reminders do not work for iPads, even though they were promised to work on cellular enabled devices.[173] It has later been clarified by Apple that only the 4th generation iPad and the iPad Mini 1st generation or later will be able to use this.[174] Cellular Network In iOS 6.1, users reported problems with cellular connectivity. This was addressed for the iPhone 4S in iOS 6.1.1 which "fixes an issue that could impact cellular performance and reliability for iPhone 4S".[175] Do Not Disturb Many iPhone users experienced a bug with the Do Not Disturb feature when the calendar changed from 2012 to 2013. The feature would be left on past the scheduled time set by the user, allowing texts, notifications, and alarm settings to be missed. The bug was caused by a difference in formatting in the ISO calendar system versus the Gregorian calendar system.[176] Apple did not offer a quick software update for the bug, instead saying that the bug would fix itself on January 7, 2013.[177] Microsoft Exchange Another bug causes issues when iOS devices connect to a Microsoft Exchange server to retrieve email, resulting in message "mailbox server resources are consumed, log growth becomes excessive, memory and CPU use may increase significantly, and server performance is affected".[178] Microsoft have suggested several workarounds,[179] and Apple responded with a KnowledgeBase article describing the cause of the bug and a suggested temporary workaround, promising a fix in the near future,[180] which was then fixed with release of iOS 6.1.2.Lockscreen bypass code On iPhones, another bug found in 6.1 allowing bypassing the lock screen's passcode to temporarily gain full access to the Phone app, by performing a specific sequence of actions on the phone that remained unfixed,[181] with Apple acknowledging the bug[182] and then addressed with release of iOS 6.1.3.Audio profile speakerphone iPhone 5 users experienced dropped calls during the release of iOS 6.1.3 when there was an issue with the audio microphone profile. This also caused issues with many voice-over commands, including Siri, to get different results than expected or to fail easily. Apple fixed this bug with the release of iOS 6.1.4, which updated the audio speaker profile so users would get better results.FaceTime Shortly when Apple released iOS 7, users running iOS 6 were said to have problems using FaceTime. Apple later released a support document stating that this was due to an expired device certificate and that devices that support iOS 7 should update to it in order to resolve these issues.[183] Devices that are unable to run iOS 7, such as the fourth-generation iPod touch, should upgrade to iOS 6.1.6.[183] Data security An attacker can collect or modify data in sessions protected by SSL/TLS protocols. This same bug was also reported on iOS 7.0.4 and iOS 7.0.5 for the iPhone 5C and 5S. For the iPhone 3GS and the iPod Touch 4th generation, iOS 6.1.6 was released to fix this issue since iOS 7 is not compatible with these devices (see iOS 7.x).

iOS 7[edit]

In iOS 7, users that were running iPhone 4 to iPhone 5, iPad 2nd to 4th generations, first-generation iPad mini, and iPod Touch (5th generation) have developed bugs that were formerly retained since iOS 6. One example is the SSL/TLS protocol when the secure transport failed to verify certification authenticity (fixed in iOS 7.0.6). This caused the iPhone 3GS (initially ended with iOS 6.1.3) and the iPod Touch 4th generation (initially ended with iOS 6.1.5) to advance one update to iOS 6.1.6.

Passcode screen bypass bugs People are able to bypass the "Enter Passcode" screen. This flaw was discovered within hours of it becoming publicly available. This is only able to be done on iPhone 5 and earlier while the iPhone 5C and iPhone 5S are safe from this bug. This is caused by the ability to use the control center via the lock screen and clicking on the camera or timer buttons. This feature can be turned off in the Settings app.[184] This was fixed in iOS 7.0.2.Motion Sickness Users complained about dizziness and vertigo-like symptoms when using this operating system because of parallax motion effects. In iOS 7.1, a new function in the Settings app named "Reduce Motion" was introduced to reduce the motion of the user interface and disable the parallax effects.[185] Creation of CardDAV Accounts not working Creating a CardDAV Account contains a bug that needs manual fixing of the CardDAV-Server-URL.[186] Battery drain problems In iOS 7.1, users have reported seeing significant drain on their batteries after installing the new update.[187] FaceTime Issues with video-calling and connection errors. This was fixed in iOS 7.0.4. (See iOS 6.x)Safari ignores local domain Local domain names can no longer be resolved in Safari.[188][189] This breaks short names on the local network, e.g. 'nas' for nas.<ourdomain>.Home screen crashes Users have reported various crashes of the home screen, the core service that renders the home screen icons, Notification Center, Control Center, Siri and the lockscreen.[190] This was fixed in iOS 7.1.Data security Secure transport failed to validate the authenticity of connection. This issue was addressed by restoring missing validation steps. This may cause an attacker with a privileged network position to capture or modify data in sessions protected by SSL/TLS.[191] This issue was addressed by the release of iOS 7.0.6.Battery Indicator stuck until restart iPhone 4S users report experiencing problems with the battery indicator; the indicator will freeze at the same value until the iPhone is restarted again.[192][193] Touch ID In iOS 7.1, Touch ID was not functioning on the iPhone 5S. The problem cannot be resolved by turning Touch ID on and off in the "Fingerprint and Passcode" menu, restarting, resetting, or restoring the device using iTunes. This problem was similar to the iOS 8.0.1 release, which crippled iPhone 6 and iPhone 6 Plus of both cellular and Touch ID. This was fixed in iOS 7.1.1.

iOS 8[edit]

HealthKit Shortly after the release of iOS 8, Apple released a statement pointing out that a bug had been found in the operating system which prevented HealthKit-compatible apps from being released alongside iOS 8.[194] Apps already released that included Healthkit functionality were withdrawn from the App Store. iOS 8.0.1/8.0.2 included a fix for this issue.Cellular iPhone 6 and iPhone 6 Plus users who updated to iOS 8.0.1 wirelessly had cellular service of their iPhones disabled due to a software issue. Over-the-Air downloads of iOS 8.0.1 were stopped within an hour of the release of the software, but many early adopters had been affected. This issue was fixed with the release of iOS 8.0.2 a day later.Touch ID iPhone 6 and iPhone 6 Plus users who updated to iOS 8.0.1 wirelessly had Touch ID disabled due to a software error. Over-the-Air downloads of iOS 8.0.1 were stopped within an hour of the release of the software, but many early adopters had been affected. This issue was fixed with the release of iOS 8.0.2 a day later.

Users who updated phones with Touch ID enabled to iOS 8.3 found out that they could not use Touch ID to make App Store purchases.[195] A workaround has been devised by users to repair this issue.[196] Performance Many users of older generation devices such as the iPhone 4s and the iPad 2 reported performance issues with iOS 8. Apple has since released iOS 8.1.1 in attempt to fix the problem.Keyboard Several issues with the new Keyboard API in iOS 8 were reported, including problems with custom keyboards crashing or not appearing, or being replaced with the default keyboard. Apple has since released iOS 8.3 in attempt to fix the problem.iMessage When a specific set of Arabic, Unicode, and English characters are sent through iMessage to an iOS device running iOS 8.0 or later, it causes the device to crash. This bug was discovered by a reddit user in May 2015. Apple has since released a software update (iOS 8.4) to fix this issue.[197]

iOS 9[edit]

Game Center Many users of all generation devices experience issues with Game Center loading times causes long freezes in apps that require Game Center logins.[198] This was fixed in iOS 9.1.

Bluetooth Many users of iPhone SE devices experience issues with phone calls via Bluetooth. The quality of incoming calls via Bluetooth devices is very low.[199] This was fixed in iOS 9.3.2.

See also[edit]

Apple related
Other mobile platforms


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  2. ^ a b "iPhone – Features – OS X". Apple Inc. Archived from the original on October 6, 2007. 
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Further reading[edit]

External links[edit]