How to fix HUAWEI Mate 40 black screen

Occasionally the screen of HUAWEI Mate 40 remains black. This trouble may occur in several circumstances. Often it happens after the HUAWEI Mate 40 falls. Other times, the screen remains black after a start, lock, or sleep. Whatever the case, don’t worry, you will find several methods to resolve the black screen of your HUAWEI Mate 40. For that, it’s going to be needed to verify several things just before trying the different techniques. We will discover at primary what things to verify when the screen of HUAWEI Mate 40 remains black. We will discover in a second time all the tricks in order to unlock this nasty black screen.black-screen-huawei-mate-40

What should you watch when you have a black screen on HUAWEI Mate 40

Before embarking on the tricks, we advise you to verify the things below in order to better understand where the problem can originate. This will give you good clues of the nature of the problem.

Is the HUAWEI Mate 40 LED on when the screen remains black?

One of the first of all things to verify is the tiny led that is at the top of your screen. In cases where the LED is red or blue when the HUAWEI Mate 40 screen remains black, it means that the phone is switched on. In this instance, it is extremely likely that the problem originates from the screen.

Is the HUAWEI Mate 40 charged?

From time to time, a deep battery discharge prevents the HUAWEI Mate 40 from turning on for some time. Make certain the HUAWEI Mate 40 is entirely charged by leaving it connected for at least 1 hour. In the event that after that the LED does not light up and the screen remains black, the problem can potentially originate from the electric battery.

Is the HUAWEI Mate 40 damaged?

If the HUAWEI Mate 40 screen remains black after shock, after dropping , after being wet , or after breaking , the screen may perhaps be harmed. In this instance, none of the methods below will function. You will then have to bring your HUAWEI Mate 40 to a repairshop.

How to proceed when the HUAWEI Mate 40 screen remains black?

After checking out that the problem comes from the screen, you can try the following ideas to unlock the black screen of your HUAWEI Mate 40. If a trick does not function, look at the following one.

Plug the HUAWEI Mate 40 into its charger

One thing to perform when the screen of HUAWEI Mate 40 remains black is to put the phone on. This will make it feasible to be serene for all subsequent manipulations. This as well handles the possible problem of a deep discharge of the phone electric battery.

When possible, take away the electric battery from the HUAWEI Mate 40

If the HUAWEI Mate 40 is easily detachable, we advise you to remove the electric battery . This occasionally handles the black screen problem. Wait some secs, then turn the battery back on and try to start the phone. If perhaps the screen is still blocked, look at the following step.

Remove SIM card and SD card

It occasionally happens, without justification, that the SIM card or the SD card conflicts with HUAWEI Mate 40 and causes a black screen. One of the methods to try is to take away the SIM card and the SD card. When it’s completed, it is advisable to try to start the phone. If perhaps it works, this means there is a conflict with the SIM or SD card.

Force HUAWEI Mate 40 to restart

If the screen remains black, the problem often resolves with a forced restart . To do this, you will have to press a number of keys simultaneously. You need to stay at least 10 secs for the forced restart to work. The key combo will depend on the models but had to be 1 of the subsequent:

  • low volume + power button
  • low volume + power button + cough Home
  • high volume + power button
  • volume top + touch power + cough Home
  • touch power + cough Home

Wait until the electric battery is empty

Finally, in the event that none of the above procédures do the job, you can try to let your electric battery discharge. Make sure the electric battery is completely empty. When it’s carried out, plug your HUAWEI Mate 40 into its charger and try to start the HUAWEI Mate 40.