A black screen appeared on the phone screen and the phone is working

Good afternoon friends. A black screen appears on the phone screen, but the phone is working. So are you familiar with this situation? Yes, for me. When touchscreen phones appeared, such displays began to malfunction frequently. It all depends on the malfunction factor. We can figure it out and fix it ourselves, or we will need to take the smartphone to a specialist. In such situations, people most often turn to the service center. In this post, I will tell you what exactly you can do yourself if your smartphone’s display suddenly turns black, but continues to function.

The most common causes of phone screen failure

There is a common myth that if the display of your phone turns black, then this is a significant failure. It happens that a similar effect appears due to a malfunction of the cables that connect the display to the main board. At the same time, it’s really better to take the phone to a technician. But there is a chance that you can fix the problem yourself. This way you will save your money. There is never too much money.

Phone screen breakdowns have been annoying people for ten years now. The display may turn black for a number of reasons:

Your mobile gadget could have received an imperceptible blow, or suffered a concussion. In addition, some part (or several) in its microcircuit could burn out;
Water could get inside the device, along with a rapid change in air temperature;
The smartphone was unsuccessfully flashed, or the programs were installed on it incorrectly.

Of course, there are other causes of malfunctions, but the ones I presented to you are the most common.

What can you do if your smartphone is working, but the display is black?

Let’s first apply the simplest options for fixing a black screen on your phone. Reboot the smartphone by holding down the “Power” key and keep it pressed until the gadget turns off;
After that, take out the battery and install it again. Turn it on again. If the phone does not work normally, we will use the keys with which we create screenshots.

This is done like this:

Press and hold the “Power” key and the volume rocker for more than five seconds;
No changes? Then press the power button together with the “Increase volume” button for 5 seconds;
You can also use a combination of different buttons together with “Home” when it is on the body of your gadget.

These methods did not help, in this case, let’s move on to much stronger methods. Let’s open the back cover of the phone and look for the breakdown under it ourselves.

The phone does not respond to touch

In this case, we are trying to remove the cover of your smartphone. It usually comes off easily. Just stick your fingernail, or something flat and thin (like a plastic card), and swipe it around the case, the lid should open. It happens, but rarely, that it can be held in place by several bolts:

After we have removed the cover, we need to remove the battery from the phone;
Then, unscrew some of the bolts holding the plastic partition, which is located in the middle of the back cover and the main board of the phone. This partition must be carefully removed;
On some smartphone brands, this partition is not very easy to remove. In this case, you can use the same plastic card (or something flat);
After you remove the cover with the partition, you need to carefully examine the main board to look for its parts, as if they were scorched by something or simply looking for defects (I advise you to smell the phone. The melted parts have a corresponding smell);
The damage may be on the inside of the board, so you need to unscrew the screws and look at the other side of the board;
If the board has oxidized in certain places, you will immediately see the oxidized parts. They usually partially surround the board;
To remove such parts, use a toothbrush and apply a little Galosh solvent to it (purified white gasoline can be used). If you don’t have these liquids, use alcohol;
We wet our brush with this liquid and carefully clean the oxide on the board until it disappears;
Then, after cleaning, you can try to lean the partition and connect the battery to check the functioning of the phone.

The contacts on the main board of your gadget may oxidize if water gets under the cover. So, did you manage to start the phone? In this case, let’s start assembling it. If you notice carbon deposits on any part of the board, in this case we take the gadget to service. You yourself will not be able to cope with such a scourge if you do not have the necessary knowledge and tools.

Removing the black screen by resetting settings

If you were unable to find a malfunction when you opened the phone cover, then you need to look for the occurrence of such a display in the phone software. So, let’s begin:

To get to the Recovery tab, you must first turn off your smartphone. If you cannot turn off the phone using the usual method, you should remove the battery from the phone for a certain time;
Next, we need to press the “Power” buttons or the volume rocker. We hold these buttons until the emblem of the creator of this gadget appears. In some devices, one of the buttons is “Home”. You can press it together with the “Power” key;
If you pressed the buttons correctly, the logo of the creator or the Android OS should appear. Next, a menu with tabs appears;
Having entered this menu, you must select “Wipe Data/Factory Reset” from all the tabs. Then, to select items in this window, press “Power”. To move around the screen use the sound key;
Then, a window opens where the tabs are presented. In this window, select the command called “delete all user data”. To select it, use the “Power” button;
Our information will begin to be restored, this may take time. The phone will be cleared of all information. For example, from images, settings, applications, your account, etc.

In order to use your mobile phone in the future, you need to enter your login and password for your Google account. After this operation is completed, press the “Power” button to turn on the gadget. Then, enter your details to log into the phone.

If your smartphone has been exposed to water, then I can advise you to study my article “ The phone fell into water .” In this article I describe in detail the action in such a situation.