When the information came from Samsung mobile phone, the screen lit up.

If the screen stays on when you receive the text message, the problem may be related to the software. I suggest you try the operation according to the following steps:

1. Check whether the mobile phone has recently downloaded third-party software (battery management, security guards, system management). It is possible that the software is not compatible with the mobile phone, which makes the mobile phone unable to lock the screen. I suggest you try to uninstall it.

2. If it is not solved, it may be related to the system. You can back up mobile phone data (phone book, SMS information, multimedia materials, etc.). ) and restore the phone factory settings.

If the problem has not been solved, it may be related to the mobile phone hardware. It is recommended that you take the purchase invoice, maintenance card and mobile phone to the local Samsung service center, and the engineer will test the mobile phone for you.