The Galaxy S21 was the first smartphone to get the November 2021 security update. The update was first released to the units that are registered to beta-test the One UI 4.0 update. Later, it was released to the international versions of the Galaxy S21. Now, Samsung has started rolling it out to the unlocked units of the phones in the US.
The latest software update for the unlocked units of the Galaxy S21, Galaxy S21+, and the Galaxy S21 Ultra in the US comes with firmware version G99xU1UES4AUJ7. While we don't have the official changelog for the update yet, we know for sure that it includes the November 2021 security patch that fixes dozens of privacy and security-related vulnerabilities. The update might also contain device stability improvements and general bug fixes.
The new update is currently rolling out in the US on AT&T, Bluegrass Cellular, C-Spire, Comcast, Sprint, T-Mobile, and Verizon's networks. If you are a Galaxy S21 series smartphone user on any of the networks mentioned here, you can check for the new update by navigating to Settings » Software update and tapping on Download and install. You can also download the latest firmware file from our database and flash it manually.
Samsung had launched the Galaxy S21 series earlier this year with Android 11-based One UI 3.1 onboard. It has already received the Android 12-based One UI 4.0 Beta update in a few markets, and the stable update could be released before the end of this year. Phones in this lineup get monthly security updates.
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