Since the server pushes update notice to different serial numbers by batches, it may take some days for you to receive the FOTA notice. Thanks for your patience. You may tap “System updates” in [Settings] >[System] to check if there is new firmware available. Or, you can also try to manually update firmware by referring to the following link. How to update firmware on my phone?
【Release Note】 Updated Android security patch to 2021-11 Fixed an issue with the profile icon color in the "About phone” page Fixed a freezing issue when sliding on certain webpages Fixed an issue where photos could not be deleted when using one-handed mode in WhatsApp Fixed an issue with the Lighting Armor Case after connecting to the gamepad Fixed an occasional issue with automatic shutdowns when making calls in LINE