Almost a week ago, Samsung released the Android 12 based One UI 4.0 update to international and carrier-locked variants of the Galaxy S21 series in the US. The package is now extending to the unlocked variants of Galaxy S21, S21+, and S21 Ultra in the country.
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Almost all US carriers are experiencing the update including AT&T, Bluegrass Cellular, Cellular South, Comcast, Sprint, Tracfone, and Xfinity Mobile. The Android 12 One UI 4.0 package for the Galaxy S21 lineup is bundled with the firmware version G99xU1UEU4BUK7. Additionally, the software also inculcates the current security maintenance, November 2021.
Regarding changes, the One UI 4.0 based on Android 12 will allow you to create a customized mobile experience, making it more expressive, dynamic, and personal. It arrives with new Color Palettes inspired by Material You design, improved Bixby, revamped widget design, improved stock apps, more fluid performance, and a variety of emoji, GIFs, and stickers on the Samsung Keyboard.
Moreover, Android 12 emphasizes improving security by adding a new privacy dashboard that alerts you when an app is accessing a camera or microphone. To know more about these privacy features, tap on the below button.
If you own any smartphone from the Galaxy S21 lineup in the US, the update will reach out to you in a short while as it is rolling out in batches. To avoid the interim time, you can force the build via Settings > Software update > Download and install.