Step 1: Open [Allow Developer Options]
Find [Settings], click [About Phone], find [Version Number] and click multiple times to allow developer options.
Step 2: Connect the USB to the mobile phone and open [Allow file transfer]
USB debugging needs to allow file transfer when using USB connection, do not select [Charge Only].
Step 3: Open [Developer Options] to turn on USB debugging
Click [System and Update] Click [Developer Options] and slide to the bottom to open [USB Debugging]
Normally, [USB Debugging] will be turned off after the software is updated, and it needs to be turned on when it is used again.