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Last updated: December 21st, 2023 at 19:47 UTC+01:00
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The One UI 6 update began rolling out to the Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra in India on December 21. It's arriving with a firmware version ending in FWL3 and bundles the December 2023 security patch (the December patch was released to the S21 lineup in a separate update in some countries earlier this week, but India is getting it alongside Android 14).
Android 14 is the third major OS upgrade for the original Galaxy S21 trio and Android 15 will be the final one. The S21 FE, on the other hand, will go on to receive Android 16. All four models will receive One UI 6.1 in the next couple of months once the Galaxy S24 series is unveiled in January.
Galaxy S21, S21+, and S21 Ultra owners can download Android 14/One UI 6 for their device from its Settings » Software update menu. The latest firmware is available in our firmware archive as well, and it can be installed on the phone with a Windows PC and a USB cable.
Abhijeet's writing career started with guides for custom firmware for Samsung devices (including the original Galaxy S), and he moved to SamMobile in mid-2013 and worked up the ranks to Editor-in-chief. In addition to phones and mobile devices, his interests include gaming on both PC and console, PC hardware, and spending countless hours on YouTube watching videos on tech, movies, games, politics, and internet dramas.
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