What should I do if Huawei Mate7 falls to the ground and can t turn on the phone and turns into a wh

If the screen color of the mobile phone is abnormal, such as black screen, splash screen, flower screen, white screen, red screen, etc., it is recommended to:

1.It is recommended to restart the phone to try: Press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device;

3.If it comes with system software, it is recommended to update the system version of the mobile phone to try: please go to Settings - About the phone (about the device) - Software update (system update) - Update (please back up the data in the device before upgrading).

If the problem persists, it is recommended to bring the purchase invoice, warranty card and mobile phone to the local mobile phone purchase office for repair or to a nearby mobile phone repair shop for repair.

Hello dear, it is recommended that you force restart to try when you use force restart. If it cannot be turned on normally after using it for a period of time: This may be an automatic shutdown due to low battery power, please connect the charger to charge it for a period of time and turn it on.

Too many boot auto-start items will also lead to slow boot up, please prohibit apps that do not need to be booted up: enter the "Settings" interface, click "boot auto-start items", and clear the apps you want to prohibit. Huawei will release the latest software version on the official website, please enter the official website of Huawei**Address query according to model**; Or update the mobile phone software version through ** upgrade to get a better experience.

If the problem persists, it is recommended that you bring the purchase invoice to the service branch for maintenance.

If it doesn't work, connect your phone to your PC with a data cable, and then click Repair System to see if it can be restored.

If you can put.

Take out the memory card and swipe it to find the corresponding phone.

Flash the package, put it in the memory card and directory, and then put it back on the phone, press the power button and the volume up button at the same time, and you can flash the phone according to the prompts.

Please press and hold the power button (more than 15s) to force restart the boot. The black screen may be caused by the app being incompatible with your phone, please uninstall the app or restore your phone to factory settings after backing up important data. Also, running too many apps at the same time can result in a black screen.

Please close the apps you don't need in the background for a while: Settings - Manage Apps, select the app you want to close, then tap "Stop" and follow the on-screen prompts to close it. If Phone Manager is preset on your phone, you can close the app through Phone Manager

For this, go to the "Phone Manager" interface, click "Phone Acceleration" or "Acceleration Optimization", and end the application running in the background with one click.

There are many possible scenarios for the black screen of your phone, so please follow the following scenarios:

1. The mobile phone has been flashed or used a third-party flashing software. Unofficial systems can affect the stability of your phone. Please restore your phone to the official system.

2. After installing a certain software or clicking on an unknown link, the phone screen appears black. You can keep pressing the power button + volume down button during the boot process to enter safe mode, uninstall the previously installed software or backup important data and restore it to factory settings.

3. Mistakenly deleted system files. When the system is running, it cannot find the corresponding file, which causes confusion and causes the phone to malfunction. Please back up your important data and try to do a factory reset.

4. A microSD card is installed. Please reseat the microSD card and check if the problem persists. If the problem is present, it may be a poor contact, and if the problem is not there, it may be that the microSD itself is damaged or incompatible with the phone system.

It is recommended to replace a high-quality microSD card.

5. If the problem cannot be solved after the above operations, and the black screen of the mobile phone has no rules to follow at all, it may be a hardware failure. Please bring the purchase invoice to the after-sales service outlets for testing.

The phone screen is black, don't be in a hurry to recover first, use a friend's mobile phone to call your own **try, if you can get through, you can also answer normally, there is basically no problem. Or you can leave the phone for about 3 minutes without pressing any keys on the phone, and then press the button again to activate the screen.

There are usually two types of black screens on mobile phones: one is a black screen in use, and the other is a standby black screen.

1. One is that there is a problem with the software itself, the software itself is unstable, or it does not match the mobile phone system, etc., this is very easy to solve, and you can uninstall it;

2. The second is the conflict between the software and the software, which is a little troublesome to solve, and requires a software to install and uninstall the software in the experiment. If you find it, uninstall it, and the problem will basically be solved.

3. As for the black screen in standby, let's talk about the standby principle first, most of the straight board machines have a power-saving circuit design: the mobile phone will automatically turn off the screen if it can't detect the key trigger signal for a long time, that is, standby, when the user needs to use the mobile phone, a button will activate the power-saving circuit, and then the screen lights up, The reason for the black screen is often that the screen trigger circuit is delayed, that is to say, the mobile phone system has issued a command to light up the screen, but the circuit is delayed, but the result is that the screen is not lit successfully, But the phone system thought it was lit up, so it caused a black screen.

Swipe down to find the vertical lock in the notification bar or swipe up in the switch bar, and turn it off.

See if there's any software licensing control, or look at the developer options.