Extreme Android User
Aug 17, 2010
Cotswolds, England
Verizon have begun rolling out the AUB5 update on their Snapdragon, carrier locked. S21 series phones with the March Android Security patch.

It is a FOTA, (Firmware Over The Air), update and you can check... Settings > Software update... to see if it is available for you.

Build date = 24 February 2021

Release date = 04 March 2021

Android Security patch = March 2021

This is the 2nd stable update in 36 days