Xiaomi 12 cannot be cut and pasted.

You can erase the data and reinstall the software.

The steps are as follows: 1. Please enter the system settings, applications and software, clear the data, uninstall the software, and then enter the application supermarket to download and install the software again after booting, and try to recover.

2. I suggest you back up your data, restore and clear all the data (turn off your phone, press and hold the volume up+power on button to resume), upgrade your phone to the newly developed system with a line brush, and don't install the application that requires root permission for the time being to see if it can return to normal. Simple point is to enter the recovery to clear user data.