https://wccftech.com/a-developer-manage-to-get-android-12-booting-on-the-galaxy-s-iii/

The legendary Galaxy S III manages to be one of the best devices Samsung has released; that device meant business and Samsung was fully aware of that. Not just that, it quickly ended up becoming a fan favorite amongst Android developers because they were able to release several custom ROMs. Well, now a developer has managed to get Android 12 running on the Galaxy S III.

The Galaxy S III was released back in 2012 and while Samsung has long declared that the phone is no longer going to receive upgrades, that does not mean that developers are going to give up on the device as the phone has just been made to run the unofficial LineageOS 19.0 custom ROM that is based on Android 12.