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The latest Galaxy S21 firmware update may have addressed poor battery life



The launch of the Galaxy S21 series has not been without flaws for some customers in the Exynos regions, and you may remember that last week we drew attention to the issue of the security update in February 2021 and the possibility that it may have had a negative effect on the flagship battery life for some owners. Fortunately, Samsung was aware of the issue, and the company may have already addressed it with the latest firmware update.

Samsung is now launching a new firmware update in February for the Galaxy S21 series, and many users who have experienced battery life issues in the past are now reporting via XDA Developer Forums that the problem has been dealt with. Remember, some users are still reporting the same issues as before, so Samsung’s new update may not have addressed the issue in its entirety or for all affected.

The new update can be identified with the firmware version G99xBXXU1

AUB6. It’s rolling out in dozens of countries – too many to list here – and readers can refer to our firmware archive for the Galaxy S21, Galaxy S21 + and Galaxy S21 Ultra to verify if the update can be downloaded for phones in their regions. As always, you can also look for firmware by opening Settings on your phone, access Software update section and tap Download and install.

Since our phones have not shown the aforementioned battery life issues in the first place, we have also not noticed any major changes in autonomy after this new firmware update. Nevertheless, we will keep you updated if anything comes up, and you are welcome to do the same in the comments section below.


  • Model: SM-G991B
  • Dimensions: Rod: 151.7 x 71.2 x 7.9 mm
  • Show: 157.48 mm dynamic AMOLED 2X
  • PROCESSOR: Exynos 2100
  • Camera: 12MP


  • Model: SM-G996B
  • Dimensions: Rod: 161.5 x 75.6 x 7.8 mm
  • Show: 6.7 inch / 170.18 mm dynamic AMOLED 2X
  • PROCESSOR: Exynos 2100
  • Camera: 12MP


  • Model: SM-G998B
  • Dimensions: Rod: 165.1 x 75.6 x 8.9 mm
  • Show: 6.8 inch / 172.72 mm dynamic AMOLED 2X
  • PROCESSOR: Exynos 2100
  • Camera: 12MP




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