iOS 4
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| A version of the iOS operating system | |
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iOS 4 running on an iPhone 4.
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| Developer | Apple Inc. |
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| Source model | Closed, with open source components |
| Initial release | June 21, 2010 |
| Latest release |
4.2.1 (November 22, 2010) [±]
4.2.10 (July 25, 2011) [±]
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| Platforms | iPhone 3G iPhone 3GS iPhone 4 iPod touch (2nd generation) iPod touch (3rd generation) iPod touch (4th generation) iPad (1st generation) iPad 2 |
| Kernel type | Hybrid (XNU) |
| License | Proprietary EULA except for open-source components |
| Preceded by | iPhone OS 3 |
| Succeeded by | iOS 5 |
| Official website | iOS 4 at the Wayback Machine (archived June 30, 2010) |
| Support status | |
| Unsupported as of about 2013[citation needed] | |
iOS 4 is the fourth major release of the iOS mobile operating system designed by Apple Inc.. It was released on June 21, 2010, and was the first major release to be renamed to simply "iOS",[1] and the first major release to drop support for some devices, as well as the first update that iPod Touch users did not have to pay for. iOS 4 was succeeded by iOS 5, which was released on October 12, 2011.
Contents
History[edit]
iOS 4 was introduced during the annual Apple Worldwide Developers Conference on June 7, 2010 together with the iPhone 4. With the release of the first-generation iPad on 2010, the company renamed iPhone OS into iOS to reflect its inclusion.[1] iOS 4.0 was released to the public and supported only the iPhone and iPod touch. It was also announced to have over 1500 new APIs for developers, supporting the highly anticipated multitasking feature.
iOS 4.2.1, released November 22, 2010, was the first version to bring major feature parity to the iPhone and iPad. It was the last to support iPhone 3G and iPod Touch (2nd generation, MB & MC models).The release of the CDMA iPhone 4 for Verizon Wireless saw a branching of iOS. The 4.2 version sequence continued for the CDMA iPhone 4 while iOS 4.3 was released for all other products. iOS 4.3.5 was the final release on iOS 4.
Features[edit]
Home Screen[edit]
Home screen app count on iOS 4 was raised up to 2160 instead of previous 180 and it has an ability to set up a custom home wallpaper that iPhone 3G and 2nd generation iPod Touch hasn't. Apps in the home screen can now be categorise into folders with default folder naming based on category name in App Store. It also redesigns a reflective dock that is similar to Mac OS X 10.5-10.6, replaces a grid dock in iPhone OS 1-3.
Multitasking[edit]
iOS 4 introduces Multitasking. It switches between the apps instantly by double clicking the home button without slowing down the performance of the app or draining the battery accidentally.[2] The iPhone 3G and 2nd generation iPod Touch lack multitasking capabilities because of hardware limitations.
FaceTime[edit]
iOS 4 supports FaceTime, the video-chatting feature that debuts in iPhone 4. It will allow the user to enable face-to-face video conversation by just clicking a FaceTime button in a phone call.[1] It requires a WiFi connection to work.
Game Center[edit]
iOS 4.1 added a new app called Game Center, an online multiplayer social gaming network,[2] which allows users to invite friends to play the game and to compare their scores on a leaderboard. While Game Center is introduced, it is not available on the iPhone 3G.
Other new features[edit]
Keyboards[edit]
iOS 4 now supports Apple Bluetooth Keyboards for iPhone 3GS, iPhone 4 and 3rd Generation iPod Touch.
Safari[edit]
Safari on iOS 4 now introduces Bing as a search option to Google and Yahoo! and has a unified "Search" keyboard button when search field is being used.
Problems[edit]
iPhone 3G users reported performance and battery issues after they update to the latest software.[3][4] As a result, Apple released iOS 4.1 and 4.2.1 in attempt to fix the performance issues.
Some iPhone 4 users have reported technical problems with the antennas. Apple eventually released iOS 4.2.1 and the CDMA Verizon iPhone 4 running iOS 4.2.2 in attempt to fix the problem.
Version history: Apple TV (2nd generation) onwards[edit]
iOS 4.1 was the first version of iOS available on the Apple TV (2nd generation). It included Apple TV Software 4.0.[5]
Supported devices[edit]
The 1st generation iPhone and the 1st generation iPod Touch cannot run iOS 4 and above due to hardware limitations.
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References[edit]
- ^ a b c Chartier, David (Jun 7, 2010). "iPhone OS gets new name, video calling". MacWorld. Retrieved 2016-08-20.
- ^ a b "What's New in iOS 4". Apple. Retrieved June 14, 2010.
- ^ Ogg, Erica (July 28, 2010). "Apple to investigate iOS 4 problems on iPhone 3G". CNET.
- ^ Ogg, Erica (November 4, 2010). "Apple sued for iOS 4 problems on iPhone 3G, 3GS". CNET.
- ^ "About Apple TV (2nd generation) software updates". Support.apple.com. December 14, 2010. Retrieved January 9, 2011.
External links[edit]
- iOS 4 at the Wayback Machine (archived June 30, 2010)
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| Preceded by iPhone OS 3 |
iOS 4 June 2010 |
Succeeded by iOS 5 |
