1： When the mobile phone CPU is broken, it can be displayed normally after pressing the power on button, but it is unable to access the system and process data. The wireless loop is dead or the heat is very severe. If the CPU of the mobile phone is broken, the mobile phone cannot be started, or the mobile phone is turned on and crashed, or the mobile phone is turned on repeatedly. Also, if the internal integrated memory of the CPU is broken, the size of the running memory will shrink, and if the integrated baseband fails, the card will not be read or the signal will not be received.
2： The motherboard is broken. The touch screen of the mobile phone fails, the system cannot be started, the mobile phone cannot be started, the network cannot be seen, and the phone cannot be answered. If the main board of the mobile phone breaks down, you can use another phone to call the mobile phone. If the mobile phone rings, it means that the mobile phone is turned on, but the screen is not lit. If there is no response, the motherboard will burn. Leakage: The battery of the mobile phone has just been fully charged, and it shows that it is out of power within an hour of use. When the phone is turned on, it is stuck in the boot logo and cannot be turned off, or it can be turned on and restarted indefinitely. The phone suddenly crashes when texting.
