While the May 2021 Android security patch should be rolled out by OEMs as per their schedules, Pixel handsets usually get the update notifications on the day of release. The updates apply to global variants of compatible Pixel smartphones and most of them have the build number RQ2A.210505.002, except for Google Pixel 4a, Pixel 4a (5G) and Pixel 5 whose updates carry the build number RQ2A.210505.003.
Some of the Samsung Galaxy devices that have already received the May 2021 Android security patch include the Samsung Galaxy S20 series with three devices in its lineup — Galaxy S20, Galaxy S20+, and Galaxy S20 Ultra, and the Samsung Galaxy S21 series that includes Samsung Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra smartphones. Both the series received improvements to camera performance and Samsung’s Quick Share feature for transferring data between Galaxy devices. Both series also got the updates in Europe first, which should be rolled out to other regions soon.
Apple Brings iOS 14.5.1, iPadOS 14.5.1, macOS Big Sur 11.3.1, watchOS 7.4.1 With Security Fixes for WebKit