According to a report from Sammobile, the new software update for Galaxy Tab A (2018) is rolling out in the US bundled with firmware version T387TUVS2CUH1. More specifically, it is rolling out the Galaxy Tab A (2018) on the T-Mobile network. Additionally, the update might bring several bug fixing and system stability improvements. Galaxy Tab A7 (LTE) is receiving the August 2021 security update in various European markets. It can be identified by firmware version T505XXU3BUH3. It is a minor security patch. So, don’t expect to see any new features, performance improvements, or visual changes. 

August 2021 security patch for Samsung devices fixes 40 system security and privacy vulnerabilities. It is recommended to install the update as soon as it hits your phone. To manually check for the new update on your Galaxy Tab A (2018) or Galaxy Tab A7 LTE, navigate to Settings » Software updates. The update is currently rolling out in specific regions and should start reaching other regions over the next few days. 

Samsung Galaxy Tab A  2018  and Galaxy Tab A7 receiving August 2021 security update - 57