One UI

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One UI
DeveloperSamsung Electronics
OS familyLinux (Based on Android), Unix-like
Working stateStable
Source modelOpen source with proprietary components
Initial releaseJune 4, 2010; 8 years ago (2010-06-04) (as TouchWiz)
December 7, 2016; 2 years ago (2016-12-07) (as Samsung Experience)
December 24, 2018; 24 days ago (2018-12-24) (in select regions)
Latest releaseOne UI (Android 9.0) / December 24, 2018; 24 days ago (2018-12-24)
Kernel typeMonolithic (modified Linux kernel)
Default user interfaceGraphical
Preceded bySamsung Experience
Official website

One UI is an Android-based custom mobile operating system designed by Samsung Electronics for its Galaxy devices. It was introduced in late 2018 on a beta build based on Android Pie for the Galaxy S9 Series, succeeding Samsung Experience. The first public stable build was released as a software update on December 24, 2018 in select regions (Germany, Switzerland, Italy, UAE, Netherlands, Turkey and a few devices in Lebanon),[1] and a wider rollout is scheduled for January 2019.


  • The tab bar is on the bottom instead of being on the top.
  • The navigation bar has changed as has its icon. It can be changed to hide navigation bar. The gesture is based on stock Android Pie.
  • Night mode
  • The applications has been fit for one-handed usage. There are Viewing and Interaction Areas.

Devices running One UI[edit]

Note that this list is not exhaustive.

Device Version
Samsung Galaxy S9 and S9+ One UI 1.0 (Android Pie 9.0)
Samsung Galaxy Note 9 One UI 1.0 (Android Pie 9.0)
Samsung Galaxy Note 8 One UI 1.0 (Android Pie 9.0) (Beta)
Samsung Galaxy S8 and S8+ One UI 1.0 (Android Pie 9.0) (Beta)


  1. ^ SamMobile. "[List] Official Galaxy S9 Android Pie update available in these countries". SamMobile. Retrieved 2019-01-01.