Samsung released the Android 11-based One UI 3.1 update for the Galaxy A20 in June, and it has now arrived in the US. The new firmware, carrying version number A205USQU9CUG3, is currently rolling for Xfinity Mobile customers, but it shouldn't be too long before other variants also pick up the update. The new build comes with the July 2021 Android security patch, and if you haven't received the update prompt yet, you can navigate to your Galaxy A20's Settings > Software update menu to check for the update manually. Via
Source: https://www.gsmarena.com/samsung_galaxy_a20_android_11_one_ui_3_1_update_us-news-50354.php
