PSA: AT&T Samsung Galaxy S21, S21+, and S21 Ultra Now Receiving June Security Update and System Improvements

Urban Armor Gear Pylo

For those on AT&T, June’s security update for the Samsung Galaxy S21, S21+, and S21 Ultra is starting to roll out today to users. We just received the update notification on our phones here. The build number should be G9***SQU4AUF5 or something to that equivalent depending on your model. This build should also include some other system updates that also fix some issue with overheating, although AT&T doesn’t provide a changelog.

If you haven’t received the update notification yet, you can check manually by going to settings > software update.

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