Samsung has officially launched One UI 4, rolling out for the Galaxy S21 series, including the S21, S21+ and S21 Ultra. The update is based on Android 12 and was released for beta testing in September.
Users can expect new theming and customisation options, keyboard tweaks, and enhanced privacy settings, including a Privacy Dashboard to track how often an app requests access to sensitive information on your device and on-screen indicators for when your camera and mic are being used.
The One UI 4 is limited to the Galaxy S21 lineup as of now. According to Samsung, it’ll “soon become available” on older Galaxy phones, including Galaxy S, Z, A, and Note series. Additionally, a new software update for the Galaxy Watch series has been released, enabling enhanced health features and new watch faces.
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Android 12 coming to Samsung
Users familiar with Android 12 wouldn’t find One UI much different from stock Android. There are all the standard customisation options coming from Material You, including the ability to adapt the entire system’s theme to the wallpaper on the home screen, new icons, widgets and buttons.

The keyboard also gets a few upgrades, including a wider variety of emoji features. GIFs and Stickers are now directly available from the keyboard.
New privacy features also carry the same thing. You will be alerted when an app attempts to access your camera or mic by a small green dot in the top right. One UI 4 also includes a privacy dashboard to help users keep track of their privacy settings and keep an eye on what app is accessing exactly what data or hardware on your phone.

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