Software updates require a lot of work from your phone, and you'll see that in action for a while when you install an update.

From users around the internet, it looks like One UI 9 causes connection issues when using Android Auto. That means random disconnects and the inability to connect at all (via Android Authority ).

One UI 9 appears to be causing Android Auto headaches for some Samsung users, with failed connections and no confirmed fix ...

Why Is My Phone Slow After a Software Update? Explained Install a system update, and within the hour the phone feels ...