1. Uninstall recently installed third-party software. Try turning the phone on and off again.

2. Back up the phone data (phone book, text messages, multimedia files, etc.), restore the factory settings (enter the phone settings--Reset-Restore factory settings) and try again. .

3. If the problem persists through the above methods, please bring the purchase invoice, repair card and machine to the Samsung Service Center, and an engineer will inspect the machine and handle it.