Samsung’s Galaxy S21 series is getting a surprise: the Android 15-based One UI 7 update is rolling out ahead of its May schedule. Launched in 2021, the S21, S21+, and S21 Ultra are receiving their last major OS upgrade, starting in South Korea, with other markets soon to follow. The Galaxy S21 series, which debuted with Android 11 back in January 2021, is bowing out with a bang as One UI 7 lands early.
In South Korea, the update—firmware G99xNKSU8HYD9, about 3.5GB—hit devices on April 28, 2025, beating the expected May timeline. Indian and European S21 owners should see it soon; check Settings > Software Update > Download and Install to grab it.
This is the final major OS update for the S21 trio, now on quarterly security patches since early 2025, with full support nearing its end. One UI 7 brings a fresh UI with redesigned app icons, smoother animations, split Quick Panel and notifications, and Galaxy AI perks like Audio Eraser and enhanced Note Assist. The update is designed to make the most of the 6.2- 6.8-inch AMOLED displays and Snapdragon 888/Exynos 2100 chips.
For S21 owners, this is a bittersweet moment—savor the new big folders, customizable widgets, and Now Bar for live notifications, as it’s the last big improvement on software. Looking to upgrade? Trading in your S21 at Samsung’s e-shop might score a discount on the Galaxy S25, though its trade-in value has dipped since it left the US Certified Re-Newed program. Manual flashing via Samsung’s firmware database and Odin is an option for the impatient. As the S21 rides into the sunset, One UI 7 ensures it goes out in style, keeping these 2021 flagships relevant for a bit longer.
Don’t miss a thing! Join our Telegram community for instant updates and grab our free daily newsletter for the best tech stories!
For more daily updates, please visit our News Section.
(Source)
The post Galaxy S21 series gets its final OS upgrade, One UI 7, ahead of schedule appeared first on Gizmochina.
