What causes a black screen on a Samsung phone?

If a Samsung phone displays a black screen, there are many reasons, including system problems and software conflicts. A damaged screen will result in a black screen. It is recommended to try the following operations: 1. If the screen remains black: Press and hold the power button for more than 10 seconds and try to turn the phone on and off again. If the fault persists, it is recommended to send the phone to the nearest Samsung service center for testing. 2. If the screen is sometimes black: 1. It is recommended to uninstall the third-party plug-in program that was operated before the black screen. 2. Back up mobile phone data (phone book, text messages, multimedia files, etc.) and restore factory settings. If the problem still exists, please bring the purchase invoice, repair card and machine to the Samsung service center, and an engineer will check the machine and handle it.