1520 crashes and automatically restarts every four or five days. How to fix it?

Hello, there are several methods for frequent crashes:

1. The first choice is to restart the phone. The general operation method is to press and hold the power button for a few seconds, or you can take out the battery and force it to shut down and then restart.

2. Restore factory settings. Restoring to factory settings will lose your address book and text messages. You must back up your phone before using this function.

3. Flash the machine. Flashing the phone is risky, so do your research carefully before operating, or find an official repair center for repair. You must also back up your data before flashing.

Do not randomly delete files that you think are unnecessary. Some crashes are caused by users accidentally deleting system files.

Smartphones have a lot of storage space, but during use, try to store a large number of text messages and large-size pictures in the phone's memory or memory card, and do not occupy too much of the body's memory.