In contrast, system apps are apps pre-installed in the phone’s system partition with your ROM and typically, Android device users don’t have the access to the system partition.

How to manage defaults as you go: Open a link to a website or action you want to set a default app for. I’m using BestBuy as an example. Android will ask you which app you want to use. You can ...

These are the steps I followed to change the default SMS app on the TCL 30 V 5G phone running Android 11 that I’m using at the moment, but the process is the same for any of the above apps.