What is the reason why the phone keeps black

1.When the phone stores too many things, when the memory is occupied by more than 80%, the phone may freeze or have a black screen.

2.If your phone does not have a lot of memory, and you are running a lot of applications at the same time, there may be conflicts, resulting in a black screen or stuck phone that cannot be operated.

The phone has a black screen. It is one of the faults that are often encountered in mobile phone maintenance, and usually the black screen can be divided into two types: one is the black screen in use, and the other is the standby black screen.

Most of the black screens in use are caused by their own third-party software, and this situation rarely occurs with the machine. It can also be subdivided into two kinds: one is that the software is boring and has problems with itself, the software itself is unstable, or it does not match the mobile phone system, etc., this is easy to solve, and you can uninstall it; The second is the conflict between the software and the software, which is a little more 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. It is recommended not to install too much useless chicken rib software. Although buying a smartphone is to play the machine.

But some software that you don't use at all is a waste. As for the black screen in standby, most of the straight board machines have a power-saving circuit design: the mobile phone will automatically turn off the screen if it does not guess the key trigger signal when it detects for a long time, that is, standby, when you need 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. The phone screen is black, don't be in a hurry to restore it first.

Use a friend's mobile phone to make a noise to hit your own **, if you can get through or answer normally. That's basically the problem. There is no need to panic when a black screen appears, and there is no need to pick the battery immediately.

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. After many years of practice. It can generally be returned to normal immediately!

In this way, it basically does not have a big impact on the use.

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 the system software, it is recommended to try the new mobile phone system version of Hu Mengting: 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 pants hidden purchase office in Zhiqing for repair or to a nearby mobile phone repair shop for repair.

If the phone screen is black, it is recommended that you:

1.Press and hold the power button (some machines need to press and hold the power button and the volume down button at the same time for more than 7 seconds) to restart the machine.

2.Connect the charger to check the car to see if there is a charging display;

If it is invalid, please bring the purchase invoice, repair card and machine to the Samsung service center, and the professional after-sales engineering seepage division will help test it.

Explain that it's time for you to change your phone.

My phone goes black when I hit **.

I just took online classes, and then, the phone would turn off after a while, but there was no problem, I had already asked the lawyer, and the people at the mobile phone store didn't do anything.

Why did my phone automatically turn black.

Common black screen forms:

Black screen, press the power button to work!

The screen is black, pressing the power button is invalid, you need to pull out the battery and reinsert it before you can restart!

The screen is black, but the screen is faintly bright, not completely black, you can see at a glance that the phone is faked, pressing the power button is invalid, you can only restart after pulling out the battery!

During use, the mobile phone suddenly gradually blacks out (some 5800 can also appear for a short time), and then it automatically lights up and boots on, that is, it automatically restarts! This kind of situation where the screen of the mobile phone instantly dims and then turns black, I also call it the phenomenon of "screen off", which is similar to the ...... of insufficient voltage causing a light bulb to go outIn the forum, some people also have my situation, the reason is unknown, and the discussion will continue later.

Black screen, only a white screen appears after restarting, and it can't be turned on normally, this is the most serious!

The screen is black, pressing the power button is invalid, but after pulling out the battery and restarting, I find that the time has to be reset!

The above are the failures I have encountered, and some of them happen quite frequently, and everyone's experience is nothing more than 3 reasons for the occurrence of black screens!

1. Battery causes black screen reasons, there are two cases:

Poor contact of copper sheet causes the mobile phone to lose power, for example, some people take pictures or shake the mobile phone and the screen becomes black, such as the fault above.

Phenomenon. The solution is to clamp the three copper points to ......

The reason for the internal performance of the battery, such as the same battery starts to be used very well, and the performance may be reduced after half a year, which may lead to a black screen, and I personally guess the reason for the internal current and voltage weakness! If you encounter an inferior copycat battery, it is even worse, and it may damage the ...... of the phoneIf it's only occasional, it's not a big problem, otherwise it's time for a new battery!

2. Software conflicts lead to black screens, which is estimated to be experienced by everyone, for example, when frequently testing and installing various software, the probability of encountering a black screen increases greatly; Sometimes it will also lead to a black screen when the operation software is too fast; Or the software will conflict with each other, turn black screen......, and so onThe reason is unknown, and it can be solved simply when it is slight, that is, it can be simply dealt with when the card is turned off and the card is turned on and inserted! In severe cases, the solution can only be ...... againThe black screen that can't boot up normally can only be solved by hard grid (hard grid techniques also have skills, you can refer to my hard grid book)!

3,The reason for the black screen caused by system problems,This is the favorite reason of the repair shop JS,Because brushing the system is to charge,When you encounter a rookie, you will say that the black screen is caused by the system and need to be flashed to solve it,Take the opportunity to make a mistake,So rookies should be vigilant about this problem......Needless to say, the old birds, especially those who love to brush the machine, will definitely try various methods to re-flash the system ......

4. Black screen is common, simple processing is not a big problem, if you are very troubled about the time, it is recommended to install the software "time box", synchronize network time, need a small amount of GPRS traffic, instantly restore the correct time, quite convenient, is one of the essential software ......

2. There are too many cache files, it is recommended to clean the cache.

3. If there is a problem with the mobile phone system, you can back up the data to the customer service center for free upgrade or flash.

4. The abnormality that occurs after the mobile phone is dropped needs to be tested by the customer service center.

5. The system is abnormal caused by the root of the phone, and the data needs to be backed up, and the root is removed by flashing.

What to do if your phone has a black screen? Tell you what the cause is and solve the problem quickly.

The reason is that the phone system memory is insufficient, you can use "factory reset" to restore it to normal, it is recommended not to use functions and software with large memory in the future, etc.

It should be CPU virtual soldering, it's the ** processor on the circuit board. It may also be a problem with the internal wiring of the mobile phone, but this is generally a problem encountered by a flip phone, and it will be fine if you break the screen twice as soon as the screen goes black. It's still a repair.

It is easier to have Hong Kong and Macao banks. Probably the hardware configuration is not good enough. Sometimes it's easy to get stuck and then it's black and restarts.

It may be that the electromagnetic is broken, and the PCB connected to the motherboard is broken, both of which will make the phone go black.

That's a matter of the mobile phone, the mobile phone has a poor signal, and the signal cannot be received.

I used to have a mobile phone, but later I found out that the electric board was not working, and it would be nice to replace it with a new electric board.

Me too, my original memory card was 8g and now 4g is stuck.

The reason for the automatic black screen is that the phone is set to sleep, which can be set for up to ten minutes, taking Huawei G9 mobile phone as an example, the operation steps are as follows:

1. In the settings interface of your phone, click to enter the display options.

2. Enter the list of display options, find Hibernation, and enter the Hibernation Time Setting.

3. Select the appropriate time as the sleep time, then you can prevent the black screen within the effective time.

The first thing to confirm is whether the black screen is caused by a hardware failure or a software failure, if the phone has no important data, you can suggest to restore the system to try to fix it. If the recovery system failure persists, the hardware damage is more serious!

The phone doesn't work.

Or maybe it's a virus.

If your phone shows a black screen, there are many reasons, system issues, software conflicts. If the screen is damaged, it will turn into a black screen, so it is recommended to try the following:

One. If it's a black screen all the time:

Press and hold the power button for more than 10 seconds to try to power on and off again. If the fault persists, it is recommended to send the phone to the nearest service center for testing.

Two. If it is sometimes a black screen:

1.It is recommended to uninstall the third-party plug-in program that operated before the black screen.

2.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.

If the problem persists, please bring the purchase invoice, repair card and machine to the service center, and the engineer will check the machine and deal with it.

1.The phone stores too many things, and when the memory is occupied by more than 80%, the phone may freeze or have a black screen.

2.If your phone does not have a lot of memory and runs a lot of applications at the same time, there may be conflicts, resulting in a black screen or freeze on the phone.

3.If there is a virus in the phone, it may cause the phone to go black.

4.If there is a problem with the battery, such as aging, overcharging and discharging, or the battery is in poor contact, it will cause the phone to go black.

If the phone has a black screen, it is recommended that you:

1.Press and hold the power button (some machines need to press and hold the power button and the volume down button at the same time for more than 7 seconds) to restart the machine.

2.Connect the charger to see if there is a charging display;

If it is invalid, please bring the purchase invoice, repair card and machine to the Samsung service center, and a professional after-sales engineer will help you test it.

Mobile phones can be said to have become a must-have daily necessities for most of us, if there is a problem with the mobile phone at any moment, I believe many people will not be able to stand it, and the black screen of the mobile phone is one of the most common problems, so why does your mobile phone have a black screen? Is there a solution?

What to do if your phone has a black screen? Tell you what the cause is and solve the problem quickly.

Hey, my phone sometimes too. It's all after logging in to the mobile phone QQ. May I ask yours, isn't it? If the screen goes black, it's fine for a while.

Fast power consumption, stuck machine, black screen and other solutions:

Method 1: MIUI9 and MIUI10 system operations: Open Security Center, Application Management, Permissions, Auto-Start Management, and Full Ban OK

MIUI8 system operation: Security Center Authorization Management Auto-start management Method 2: Back up first, and then restore factory settings.

Summary: After getting used to not playing the machine, turn off the data network and wifi. Open Task Management Cleanup Rear Program.

See if it's a system reason, sometimes the phone is bricked because you swiped the system that doesn't match the phone, and then the phone screen goes black.

There are many reasons why a smartphone has a black screen, and we can start by using some small methods to distinguish whether the phone is a hardware problem or a system problem.

Smartphones and computers are similar, but once there is one less program on the phone, or it is poisoned, it will be like this.

It should be that there is something wrong with the motherboard, and it takes a lot of money to repair it, so you can't buy one.

It's better to test it and find out what the cause is, so you can rest assured.

Shut down and restart if it doesn't work, flash the phone to solve the problem.

Just click it and go to the mobile phone store to repair it.

There's too much garbage, just turn off the machine and turn it on.

The phone black screen is a problem with the settings.

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.

Please restore your phone to the official system. It's also possible that 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 will freeze or go black when overloaded.

Or after installing a certain software or clicking on an unknown link, the phone freezes. You can keep pressing the power button + volume down button during the boot process to enter the safe mode. Accidentally deleted system files.

When the system is running, it cannot find the corresponding file, which causes confusion and causes the phone to malfunction. Please try to factory reset after backing up important data, I hope my answer is helpful to you, I wish you a happy life!

Question: I'm with a sliding type.

Huawei mobile phones, this is the sky, often black screen, one will automatically be good again.

The sudden black screen of your phone can be caused by the following reasons:

1.Memory problems: When the phone stores too many things, it will greatly reduce the running speed of the phone, and when the memory is occupied by more than 80%, the phone may freeze or go black.

2.Application software conflict: If the memory of the mobile phone itself is not large, and many application software are running at the same time, there may be conflicts, resulting in a black screen or freeze on the mobile phone.

3.Virus invasion: Sometimes the black screen of your phone may be invaded by a virus, resulting in a black screen of your phone.

Handling 5G is one step faster, the traffic is half cheaper than 4G, the broadband speed is 500M, and it is convenient and fast to log in to the online business hall of Guangxi Telecom to handle broadband, number card, traffic package, etc. with one click. Customer service number 68 will answer for you.