The device is protected with improved security. Build Number : A516USQUBGWC1. Android version : T(Android 13) Release Date : 2023- samsung.com Samsung Galaxy A51 5G (SM-A516U) - Software Version

: Android 10, codenamed "Q" by Google, was the original operating system this phone shipped with in 2020.

: As of June 2024, Samsung has officially ended software support for the A51 5G, meaning it will no longer receive monthly security patches or major OS upgrades. The "BIT 3" (Binary 3) Significance

: While your device is currently on Android 10, it is capable of being updated as far as Android 13 with One UI 5.1 .

: If you are on BIT 3, you can flash any official firmware that is also BIT 3 or higher. If a newer update moves the phone to BIT 4, you will never be able to go back to a BIT 3 version of Android.