All you need to know about - One UI Samsung's Exclusive Mobile Skin :

One UI (OneUI) is a software Skin / overlay developed by Samsung Electronics for its Android devices running on Android 9 “Pie” and higher and Windows devices running Windows 11 and higher. Succeeding Samsung Experience (Android 7 “Nougat”-8 ”Oreo”) and TouchWiz (Android 6.x “Marshmallow” and older), it is designed to make using larger smartphones easier and become more visually appealing. To provide more clarity, some elements of the UI are tweaked to match the colors that are based on the color of the user's phone. It was unveiled at Samsung's developer conference in 2018 alongside the Galaxy S10 series, Galaxy Buds and the Galaxy Fold. On top of that, it is also the software layer for their smartwatch which runs on TizenOS and Wear OS platform, which Samsung co-developed with Google.

Features :

One UI was designed as part of a goal to make Samsung's hardware and software "work together in perfect harmony" and provide a more "natural" experience on large-screen smartphones. One UI displays most of the features that were in the Samsung Experience UX. A prominent design pattern in many of Samsung's system applications is to intentionally place common features and user interface elements along the middle of the screen rather than near the top. This makes them easier to reach with a user's thumb when using the device one-handed. For similar reasons, apps utilize large headers to push their main content towards the vertical center of the screen. 

The navigation bar supports the use of gestures and the usual 3-button system, while a system-wide "night mode" was also added. As with Android Pie upstream, the Overview screen of recent apps uses a horizontal layout, as opposed to the vertical layout of previous versions.

Release :

One UI 1.0 based on Android 9 “Pie” was periodically released to the Galaxy S8, Note8, S9, and Note9 devices throughout January, February, March and April 2019. Newer Galaxy A and M devices also have the new Samsung skin as does the Note FE (Fan Edition). One UI 1.1 was released alongside the Galaxy S10 series, Galaxy A series and Galaxy Fold.

One UI 1.5 was pre-installed on the Galaxy Note10 devices after Samsung's partnership with Microsoft to bring better mobile integration to Windows 10. While the Galaxy S7 series and Note 5 devices did not officially receive the update from Samsung, many developers in the Open Source community have ported the system to these devices.

One UI 2.0 update from Android 10 from Galaxy S9 series, Galaxy Note 9, Galaxy S10 series and Galaxy A series, However the Galaxy S10 Lite and Note 10 Lite from pre-installed launched One UI 2.0 devices.

One UI 2.1 is stable for the S10, Note 10, S9, Note 9, and Tab S6 devices. It was pre-installed on the S20 and most Samsung devices released in 2020.

One UI 2.5 is pre-installed on the Galaxy Note20 devices, as well as the Galaxy Z Fold 2 and the Samsung Galaxy S20 FE.

One UI 3.0 was update on the Galaxy S20 devices in December 2020.

One UI 3.1 is pre-installed on the Galaxy S21 devices.

One UI 3.1.1 is pre-installed on the Galaxy Z Fold 3 devices.

One UI 4.0 was released publicly on the Galaxy S21 devices. It will also arrive on other devices between December 2021 to August 2022.

Version history :

One UI 1 :

One UI 1.0, the first version of One UI, brought about many features which were becoming increasingly popular among various apps and iOS. First and foremost, dark mode was added to make viewing in dark spaces easier on the user's eyes. This feature was included in many apps and eventually brought to iOS 13 and Android 10. The first version also brought native screenshot editing tools, refined curves, refinements to the Always-On Display (tap to show), an upgraded Bixby with support for remapping the Bixby button, and a new way to navigate the device: gestures. While Android 9 “Pie” did come with gesture support, it was only available on Pixel devices and stock AOSP devices and is said to be 'half baked' by many users. However, Samsung decided to create their own gesture system to navigate devices with OneUI installed. All you had to do was swipe up from the bottom of the device in the three locations of the 'buttons' to navigate. There have been many mixed reviews of this system,.

One UI 1.1, a minor update for One UI, brought a few camera, fingerprint, and facial recognition stability fixes and performance optimizations. This update isn't available on the Galaxy S8, Note8, S9, and Note9 range, but was an OTA update for the Galaxy S10 series devices. It launched with the 2019 Galaxy A series devices, such as the A30, A50 and A70 on May 21, 2019.

One UI 1.5, another minor update, was primarily for Galaxy Smart Watches, however, does provide native Link to Windows support. It launched with the Galaxy Note10 series devices on August 23, 2019. It also had 3 notification sounds go through minor changes.

One UI 2

One UI 2.0, the second generation update to One UI, provides Galaxy users with a skinned Digital Wellbeing experience, a more refined UI in some default apps such as Device Care, a minor UI change to the clock position in quick settings, a native screen recorder, the new Android 10 gesture system, Dynamic Lock Screen (different wallpaper with every unlock), a Trash folder in Files, native Android Auto, and harder Location permission access. OneUI 2.0 has already rolled out to Galaxy S10, Note10, Galaxy S9, and Note9 on February 6, 2020 range.

One UI 2.1, a minor update for One UI 2.1 on May 22, 2020, brings support for Galaxy devices that support 120 Hz refresh rate, Quick Share, Music Share, additional camera modes, and native support for Live Captions. It is first launched with the Galaxy S20 series devices & Galaxy Z Flip. It also arrived for other devices such as the Galaxy S9, Note9, S10, Note10, Galaxy Fold, and select Galaxy A (2020) devices as a software update.

One UI 2.5, Samsung rolled out One UI 2.5 with the on August 21, 2020 Galaxy Note 20 series, and the update is now making its way to the Galaxy S20 and older Samsung phones. One UI 2.5 doesn't bring radical changes to the UI, but there are plenty of new feature additions to the camera, DeX, gesture navigation, and other services.

One UI 3

One UI 3.0, based on Android 11, was released for Galaxy S20 devices beginning December 2, 2020. The update includes a few noteworthy revisions, such as a translucent notification panel, new volume controls positioned on the right or left of the device alongside the physical volume keys, slightly enhanced widgets, and smoother animations and transitions throughout the whole UI.

One UI 3.1, a minor update for One UI 3, first released with the Galaxy S21 series, has started rolling out to other supported Galaxy devices, starting with the Galaxy S20 series on February 17, 2021. There are no notable user interface changes. It contains many new camera feature improvements such as improved touch autofocus and auto exposure controller and improved Single Take feature and software implementations such as Object Eraser, Multi Mic Recording, Eye Comfort Shield, Private Share and others.

One UI 3.1.1, a minor update for One UI 3.1.1 on August 17, 2021, first released with the Galaxy Z Fold 3 on August 11, 2021.

One UI 4

One UI 4.0, based on Android 12, is the 4th generation of One UI. It was released to the Galaxy S21 Series on November 16, 2021. One UI 4 focuses on customization, privacy, and access to Samsung's expanding ecosystem.

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