What is the reason why the mobile phone suddenly doesn't work? What should we do?

If you use a Huawei mobile phone, you can try the following methods:

Some mobile phones have smart keys. The three keys are volume key, power key and smart key from top to bottom. Please press the middle power button to start the machine, but press the smart button to start the machine.

Please check whether the power button is damaged or not.

If the power button is damaged, please take your mobile phone and invoice to the nearby Huawei customer service center for repair.

It may be that your mobile phone is dead, please make sure that your mobile phone is in a state of sufficient power.

When the battery of the mobile phone is exhausted, plugging in the charger may not turn it on immediately. Please use the standard charger to keep charging for a period of time, and then try to turn on the phone.

If the screen and indicator light are still unresponsive after charging, please take your mobile phone and invoice to the nearby Huawei customer service center for repair.

Note: If the phone can be turned on, it is recommended that you back up the data immediately.