What should I do if my Huawei Mate 8 phone suddenly has a black screen and won t turn on?

The black screen of the mobile phone is one of the faults encountered by the majority of users, and the black screen can be divided into two types:

One is a black screen in use, and the other is a black screen in standby.

The second is the conflict between the software and the software, this solution is a little more troublesome, you need a software to install and uninstall the experiment under the software is the problem of the software, find it and uninstall it, the problem can be basically solved.

As for the black screen in standby, let's talk about the standby principle first, because 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 reflected by the delay of the screen triggering circuit.

That is to say, the mobile phone system has issued a command to light up the screen, but because the circuit is delayed, it is not sent successfully, and the screen is not lit successfully, but the mobile phone system thinks it has been lit, so it causes a black screen.

Mobile phones have become an indispensable part of our lives, mobile phones can not only send messages, call, but also transfer, open a store, a good mobile phone can not only make you comfortable to use, but also not easy to damage. However, when we use mobile phones, we often encounter various situations where mobile phones automatically shut down, so how to check what is causing the problem? What should I do if my Huawei phone won't turn on the black screen?

Let's take Huawei mobile phones as an example to introduce what to do if the black screen of Huawei mobile phones can't be opened.

Black Screen Reason Check and Solution.

Method 1: 1. Check whether the orientation of the mobile phone card and memory card (SD card) is correct, sometimes the installation is not normal, and it will lead to an automatic black screen.

Method 2: 1. Check whether the phone has power (check the charging interface by plugging in the charging interface), less than 2% of the battery will cause an automatic black screen.

Method 3: 1. Software problems cause automatic black screen, please confirm whether there are any incompatible applications installed recently that cause the phone to suddenly shut down abnormally. Users are advised to perform a factory reset and upgrade to the latest software version. (Please back up key data in advance before factory reset).

Press and hold the power button for more than 10 seconds to force restart the phone, and if the phone can enter the standby interface normally, the phone will be repaired through the normal upgrade and recovery operation. If it still won't turn on and can't restart, repair the phone by forcing the upgrade to resume the operation.

2. Common upgrade and recovery mode.

1) Restore factory settings.

In the operation steps, in the phone settings, click "Backup & Reset" - > Factory Reset" - >Reset Phone" (as shown in the three pictures below), the factory reset will be completed after the phone is restarted, and then it will automatically restart normal use.

Operation steps (to ensure that the mobile phone is connected to wifi and can access the Internet), "Settings" - >System Update" - >Check for Updates" - >Select the new version" - >Select ** and install "Start the upgrade".

3) Forced upgrade recovery mode (SD card forced upgrade).

For details, please follow the steps below:

Step 1: Prepare an SD card with a capacity of 2G or more to ensure that the available space is larger than the size of the upgrade package, and it is recommended to use brands such as Sandisk, Kingstone, or KingMax.

Step 2: Create a "dload" folder in the root directory of the SD card (note: for the telecom version of Honor, please create a "dload" folder in the root directory of the internal memory card), and put the "good software upgrade package" into the dload folder;

Step 3: Plug in the charger, press and hold the volume up and down buttons, and press and hold the power button for more than 10 seconds to start the phone. The phone will enter the SD card to force the upgrade, if the low battery cannot be started because the battery is exhausted (the low battery icon is displayed), charge it before upgrading to ensure that the phone can start, please insert the charger during the upgrade process, otherwise the upgrade will fail if the battery is insufficient.

Step 4: After the phone enters the upgrade, the upgrade will be completed automatically, the upgrade time is about 5 minutes, if the upgrade fails, you can try to try again.

1. Press and hold the power button for more than 10 seconds to force restart the phone.

2. It may be caused by the incompatibility of third-party software with the system, and it is recommended to uninstall the recently installed third-party application.

3. It may be a hardware failure, and it is recommended to deal with after-sales testing.

The Huawei phone suddenly has a black screen and can't be turned on, so you should consult the after-sales maintenance personnel of the Huawei phone.

1. Check the battery: unplug the battery, connect the Huaibi mobile phone with the power adapter, if the mobile phone can be turned on normally, it means that there is a problem with the battery, and you need to replace the new battery.

2. Check the buttons: untie the mobile phone, check whether the power button is damaged, if it is damaged, you need to replace the new power button.

3. Reset the phone: Restore the phone to factory settings, reinstall the system, if the phone can be turned on normally, it means that there is a software problem and the system needs to be reinstalled.

4. Check the display screen: untie the mobile phone, check whether the display screen is damaged, if it is damaged, you need to replace the display with a new one.

1. Cause analysis:

damaged battery; system failures;

Charger cause or poor contact.

Second, the solution:

1. Try to change to another charger or data cable, or clean the charging port.

2. Boot into recover mode, select advancsd advanced mode, select wipe battery, and clear battery traces.

3. Restore the factory settings to see if it is the system reason.

4. If the battery is damaged, it can only be sent for repair and replacement.

Use the computer to swipe the phone to try, if connected to the computer can not be recognized, you can only send it for repair.

1.Multiple apps are running at the same time. Multiple apps running in the background can take up too much memory or other resources, and your phone can freeze or freeze when overloaded. Close or exit applications that you don't need to use or apps that consume a lot of power in a timely manner to free up system resources.

2.Please check if you have installed a certain software or clicked on an unknown link, and your phone freezes. 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.Check whether system files have been deleted by mistake. 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.Please check if you are using your phone for a long time or while charging. This can cause your phone to overheat and freeze, restart, or go black. Turn off background apps that you don't use often. Do not play with your phone while charging.

5.Make sure you're playing a big game or running some third-party apps. Some third-party apps are incompatible with the system and may cause your phone to freeze, restart, or freeze.

6.Please press and hold the power for more than 10s to force restart the phone to try to solve it.

7.Please check whether you have flashed your computer or used third-party flashing software. Unofficial systems can affect the stability of your phone. Please restore your phone to the official system.

8.Please make sure that you have a microSD card installed. Please re-insert the microSD card and check if the problem persists.

If the problem is present, it may be a bad contact, and if the problem is not there, it may be that the microSD itself is damaged or not compatible with the phone system. It is recommended to replace a high-quality microSD card.

If the problem persists after the above operations, and the phone freezes and the black screen is completely irregular, it may be a hardware failure. Please back up the data and bring the purchase invoice to the after-sales service outlet for testing.

Hope it helps.

Hello, in the case of power, if it is dead, you can try to press and hold the power on button for about 10 seconds, the phone will be forced to shut down and restart, if there is no response to the long press, it may be that the hardware of the phone is damaged, it is recommended to go to the after-sales repair.

Try to press and hold the power button first, if there is no response, to confirm whether the battery of the phone is too low, it is recommended to charge for 30 minutes before trying to turn on.

If the black screen of the mobile phone can't be turned on, then it must be something that is not good? Can you fix your phone yourself? If you want to repair it, you can take it apart and take a look at it yourself.

Well, if you can't, you can go to the phone store, well, how about repairing it? My phone is generally handled at a mobile phone store because I have one. My friend is from a mobile phone store, so once there is something wrong with the mobile phone, I will do it.

I immediately took his head to repair it, but I had a Huawei phone that was a foreign version, well, an African version, and then that one was very unaccustomed to using it at first, so I said, well, I don't have much about Huawei phones. Then I feel that you are not used to it, and I will no longer use it, but it is also given by friends. The most commonly used by me is Xiaomi, Xiaomi's mobile phone I feel very cost-effective, I am still very used to using Xiaomi.

Well,So Xiaomi's key method,People are still in a bungalow,I feel better than Huawei,If you say that this Huawei phone is not repaired well,You can try to use a Xiaomi phone,Xiaomi mobile phone is still good。

Method 1: Connect the original charger for charging.

Method 2: You can use a power bank to charge your phone.

Precautions for mobile phone charging: 1. It is best to buy the original charger after the charger is damaged, and the fast charging technology of some mobile phones is only suitable for the original charger.

1. It may be that the battery is out of power, try it after charging for a long time.

2. It may be caused by the system abnormality, the phone can be turned off, press the power button and the volume down button at the same time, enter the recovery mode, click Restart, and try to turn it on.

3. If the temperature of the mobile phone is too high, the battery will be turned off for self-protection, and the temperature of the mobile phone will be lowered before turning on the device to check.

4. Any operation of battery feeding or system abnormality cannot be turned on, and you need to go to the corresponding customer service center to let the engineer help deal with it.