When buying a new smartphone, a theme that is certainly close to the heart is that of updates by the brand as well as those related to the safety of the device through an injection of patches released by Google itself. Among the brands that are providing evidence of attention to this theme, we find Samsung which recently provided for the release of an update relating to its glorious Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra effectively updating the security patches in October 2021, even before the Google Pixel series smartphones.
Galaxy S21 is, in fact, the first smartphone to receive the October 2021 patches, becoming the reference point for monthly updates on tech security. The update is already available in Germany and the Philippines and can be downloaded via OTA, which if you have not yet received it, you can try to force by manually searching for the update through the appropriate section in the update menu.
Unfortunately, the version of the operating system remains unchanged, anchoring to Android 11. Furthermore, the changelog does not report any other mention of particular changes and/or additions, except for the security patches of October 2021. The build version of the firmware is the G991BXXU3AUIE.
If you own the smartphone, so you can check the software update, Just tap on the Settings menu > Software Update > If available for your region, tap on Download and Install.