Xiaomi K40Pro suddenly black screen?

Call ** to Xiaomi after-sales and explain the situation.

See how to deal with it, record the whole process, and protect your legitimate rights and interests.

On my side, because the screen was about to pass the warranty, there was a flickering screen, and the after-sales service specifically told me that the screen was guaranteed and you were given a warranty, and it was not repaired three times to replace it with a new one. Let me use it with confidence.

Going to after-sales is definitely more reliable than coming to Zhihu.

When the phone has a black screen, you can press and hold the power button of the phone to force a restart, generally after the restart, the screen of the phone and the system will work normally.

Xiaomi K40 Pule If the screen suddenly goes black, this should be a problem that it will shut down when there is no power and suddenly power is off.

If it can't be turned on, then it's going to be repaired.

Generally, most people think that it is a crash.

Press the power button and it will light up.

This is generally a motherboard problem, and you need to find a professional repair place to repair it.

Redmi is a technology brand for young people under the Xiaomi Group. It aims to create high-quality, flagship experience, and smart hardware products for young people around the world. Adhere to the brand concept of "desperate love" and stand with young people around the world.

The predecessor of Redmi is the new product line "Redmi" launched by Xiaomi on July 31, 2013. At 10 a.m. on January 3, 2019, Xiaomi officially announced that it would upgrade the Redmi series to an independent sub-brand of Xiaomi's mobile phone businessOn January 10, Xiaomi held an independent press conference for the Redmi brand.

History. In April 2012, the leaders of China Mobile approached Lei Jun and hoped that Xiaomi could make TD mobile phones. After Lei Jun led the team to conduct research, it was found that 68% of high-end smartphone users use GPRS services, and there is a large area of service blanks. At that time, many people thought that the quality of the thousand-yuan machine was not high, and Xiaomi, who was well versed in the way of cost performance, should have a great future.

In July 2012, Lei Jun visited almost all mainstream TD mobile phone brands and ODM manufacturers, invited a number of companies to cooperate with the selection and research and development of Redmi mobile phones, did a lot of risk assessment, and began to develop the first generation of Redmi mobile phones codenamed "H1".

Summary. After encountering a black screen, we can: first, press and hold the power on button (for a few seconds) to see if it is caused by power off; Second, plug in the charger of the mobile phone to see if it will display the charging pattern, and exclude the black screen caused by the shutdown of the mobile phone due to power loss; Third, when none of the above is the case, that is, the phone is not turned off normally, and the phone is still powered, that is, because the phone is stuck when it is running, we need to press and hold the power button and the volume minus button at the same time (the time is about twenty seconds), and "fastbook" will appear, and then we wait for a while, and it will be restarted, but when we wait for a long time and have not restarted, then we need to press and hold the power button ourselves, and the phone will restart.

When the phone restarts, we need to clean up the phone's memory to prevent the phone from appearing black screen again, and you can delete or uninstall some useless files, software, etc., which can effectively improve the stuck phenomenon of the phone. Because the phone has been restarted with a black screen many times, it is also harmful to the battery of the phone, so we need to cultivate the habit of using the phone reasonably.

Redmi K40 black screen.

After encountering a black screen, we can: first, press and hold the power on button (for a few seconds) to see if it is caused by power off; Second, plug in the charger of the mobile phone to see if it will display the charging pattern, and exclude the black screen caused by the shutdown of the mobile phone due to power loss; Third, when none of the above is the case, that is, the phone is not turned off normally, and the phone is still powered, that is, because the phone is stuck when it is running, we need to press and hold the power button and the volume minus button at the same time (the time is about twenty seconds), and "fastbook" will appear, and then we wait for a while, and it will be restarted, but when we wait for a long time and have not restarted, then we need to press and hold the power button ourselves, and the phone will restart. When the phone restarts, we need to clean up the phone's memory to prevent the phone from appearing black screen again, and you can delete or uninstall some useless files, software, etc., which can effectively improve the stuck phenomenon of the phone.

Because the phone has been restarted with a black screen many times, it is also harmful to the battery of the phone, so we need to cultivate the habit of using the phone reasonably.

Hope it helps.

There are still. Then you have to flash the machine to solve the pro.

Summary. Redmi K40 suddenly black screen what's going on, the reason is that the sudden black screen is when the phone is running. Press and hold the power on button for a few seconds to see if it is caused by power off; Plug in the charger of the mobile phone and see if it will display the charging pattern, and rule out the black screen caused by the shutdown of the mobile phone due to power loss.

When none of the above is the case, that is, the phone is not turned off normally, and the phone is still powered, that is because the phone is stuck when it is running, at this time, you need to press and hold the power button and the volume minus button at the same time (the time is about twenty seconds), "fastbook" will appear, and then wait for a while, it will be restarted, when you wait for a long time and have not restarted, then you need to press and hold the power button, and the phone will restart.

Redmi K40 suddenly black screen what's going on, the reason is that the sudden black screen is when the phone is running. Press and hold the power on button for a few seconds to see if it is caused by power off; Plug in the charger to the mobile phone, see if it will display the charging pattern, and Pai Yuhui will remove the black screen caused by the shutdown of the mobile phone due to power loss. When none of the above is the case, that is, the phone is not turned off normally, and the phone is still powered, that is because the phone is stuck when it is running, at this time, you need to wait and hold the power button and the volume minus key at the same time (the time is about twenty seconds), there will be "fastbook", and then wait for a while, it will turn on again, when you wait for a long time and have not restarted, then you need to press and hold the power button yourself, and the phone will restart.

Thank you for your patience. The above is all my reply, do you have any other questions? I can continue to answer for you, I hope this service can help you, you can click on my avatar to close the ant note me, follow-up questions to consult me again, look forward to serving you at this time.

It's just playing, playing games, and playing voice with others, and then the phone suddenly hangs up automatically by voice, and then the phone will restart itself after 20 seconds.

Here's why. I'll take a look.

In this case, the mobile phone is too hungry, and then there are too many programs, which causes the mobile phone to not operate normally, so the mobile phone will automatically stop these emotions, stop running these programs, and cause the voice to hang up automatically, and then the mobile phone will be more than 20 seconds later, and then restart, like cracking Li Hui, these programs will be turned off.

The next time you use it, it's good to quit these unused software, otherwise this Redmi K40 mobile phone can't run so much software, and it will block the town with this black screen inflatable situation.

Okay thank you. You are welcome.

I hope to give a thumbs up.

Redmi K40 suddenly turned off with a black screen and couldn't turn it on, how to solve it?

Redmi K40 suddenly turned off with a black screen and couldn't turn it on, how to solve it? Hello dear, the method is as follows: 1. Excessive use of the mobile phone will lead to insufficient power and automatic shutdown, and there is no response or sluggishness when it is turned on again and cannot enter the Minling desktop, which may be because the mobile phone battery enters a dormant state due to excessive discharge.

At this time, you need to keep it powered off and then plug it in to charge. Or you can pull out the battery and charge it with a universal rechargeable battery, which can force the battery to be activated. 2. The reason why it cannot enter the desktop may be caused by improper installation of the software, for which only the factory settings need to be restored.

When the phone is completely turned off, press the power button + volume down button at the same time and hold it for a while, recoverymode will appear, press the volume up button to indicate confirmation, and the volume down button is a toggle option. Once the green android robot appears, press the power button to enter and select WIPEDATA FACTORYRESET. After the factory reset is completed, select rebootsystemnow to reboot the phone and enter the desktop normally.

You can restart it and take a look.。。 Hope it helps. If my answer is helpful to you, please give a thumbs up (in the lower left corner), I look forward to your like, your efforts are very important to me, and your support is also the motivation for my progress.

Finally, I wish you good health and a good mood!

The sudden black screen of the Redmi K40 could be caused by the following reasons:

Battery drain: If your phone's battery is depleted, your phone will go black, and you need to connect your phone to a power supply to charge Shenacing.

System Crash: If your phone's system crashes, it will also cause your phone to go black. At this point, you can try to press and hold the phone's power button and the volume down button at the same time for about 10 seconds until the phone restarts.

Software conflicts: Some software may not be compatible with the system or other applications, resulting in a black screen on your phone. At this point, you need to enter safe mode and uninstall the problematic software.

Hardware failure: If your phone frequently goes black, restarts, or freezes, it may be due to a hardware failure. At this time, you need to contact the mobile phone factory or a professional repair shop for repair.

Whatever the reason for the black screen of your Redmi K40 phone, the best way to fix it is to restart your phone. If the problem persists, it is advisable to contact the manufacturer.

2. Black screen in standby. Most of the straight phones have a power-saving circuit design, the phone will automatically turn off the screen if it can't detect the key trigger signal for a long time, that is, standby, when you need to use the phone, a button will activate the power-saving circuit, and then the screen lights up.

What's going on with the Redmi K40S suddenly black screen.

1. The screen is black during use. Most of the black screen phenomenon is caused by their own third-party software, and the software that comes with the mobile phone itself rarely appears in this situation. ** Third-party software, some of which have their own problems, some of which do not match the system of the mobile phone, and some of which are incompatible with the software.

2. Black screen in standby. Most of the straight mobile phones 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, Pai guess when you need to use the mobile phone, a button will activate the power-saving circuit, and then the screen lights up.

The new machine bought in May, the memory 256 accounted for 71

This is suddenly stuck.

After that, swipe the Tik Tok black screen.

The new machine appeared 2 times black screen on the first day today.

Hello, it is recommended to get after-sales service.