I took out my phone just now and found that it was turned off, and then I pressed the power button,

The battery is broken, and so am I, just replace it.

1) There are many reasons why the phone is turned off, stuck, or even crashed and restarted, and one of the most important is that the hardware configuration of the mobile phone is not ideal. The CPU and memory of the low-end model are difficult to meet the needs of running a large number of applications at the same time, and the lack of a good SD card can sometimes cause crashes (especially when transferring applications to the SD card). Another common problem is that there are too many programs installed and opened (sometimes mobile phone manufacturers will also integrate some applications into the system, but not every user can use them, so consider uninstalling them).

At this time, we need to develop good habits of using the mobile phone, including frequently cleaning up the infrequently used apps on the phone, pressing the "back" button normally to exit the program (pressing the "house" key will run the program in the background), canceling the live wallpaper, and choosing to turn off the animation in "Settings-> Display-> Animation", etc. We also found that on some high-end models, even if there are not many apps, they will feel stuck, which may be due to some apps taking up too many resources or system-level issues. If you can't find the cause, you can reset the system using "Factory Reset" in your phone's settings, which will restore your phone to the state it was in when you first bought it (but all apps and data will be deleted before, so pay attention to backups).

In addition, there is another possibility, for example, your mobile phone configuration is not high, and the Android version is low, and then you try the higher version of the Android system, such as the current one, usually the single-core phone will be more difficult to run, and it is natural to have Caton. Therefore, when flashing the phone to choose the system version, you should decide according to the performance of your mobile phone, and don't blindly pursue a more advanced experience. (2) Please check the contact of the lithium battery of the mobile phone, and the quality of the battery!!

Hope it helps!! I hope to give it points!! Thank you.

If you are using a vivo mobile phone, the mobile phone screen does not light up and cannot be turned on

1. Check whether it is caused by low battery power.

After charging for 30 minutes with the standard charger and data cable, press the power button to see if there is a charging screen.

No charging screen: Please replace other chargers and data cables that can charge normally to confirm whether the charger and data cable are abnormal. If there is still no charging screen after replacement, it may be a fault of the mobile phone, it is recommended to bring the mobile phone, charger and data cable, and purchase voucher to the customer service center for testing.

There is a charging screen: Please press and hold the power button to try to turn on, if it can't be turned on, please follow the methods below to continue troubleshooting.

2. Confirm whether the mobile phone has been liquidated or damaged.

Liquid ingress on the phone: If the mobile phone has been automatically turned off, do not try to turn it on, use a paper towel to blot up the liquid, and send it to the local vivo customer service center for testing as soon as possible.

Lost mobile phone: There are unstable factors after the mobile phone is damaged, it is recommended to send the mobile phone to the local vivo customer service center for testing.

3. Force restart the phone, the method of force restart of each model:

Press and hold the top round button for more than 10 seconds to force restart the phone (applicable to NEX 3 NEX 3S);

Models released after September 2017 (X20 and later), as well as new models that will be released in the future: Press and hold the "Power button" + "Volume Down button" at the same time for more than 10 seconds;

Models released before September 2017 (models prior to X20): Press and hold the "Power button" for more than 12 seconds.

Fourth, repair the system.

Enter recovery mode -- install system software -- update the latest version on the network -- OK -- connect the available wifi and charger, and when the upgrade package is detected, click on it"** and install"Update the repair system.

How to enter recovery mode for each model:

1) After the folding screen phone is turned off, you need to press and hold the "Power Button" and "Volume Up Button" at the same time for 5 seconds and then let go, it will enter fastboot, then press the volume down button to move to "Enter Recovery", and press the power button to confirm to enter the recovery mode.

2) NEX 3 NEX 3S: Press and hold the top round button for about a second in the shutdown state, then press and hold the volume up button to enter fastboot mode, press the volume button to move to "Enter Recovery", press the power button to confirm to enter recovery mode;

3) Models launched after September 2017 (x20 or later): Press the "Power Button" and "Volume Up Button" for about 5 seconds in the shutdown state, then let go, enter fastboot mode, press the volume button to move to "Enter Recovery", press the power button to confirm to enter the recovery mode;

4) Models released before September 2017 (before X20): Press the "Power button" and "Volume Up button" for about 5 seconds in the shutdown state and then let go to enter Recovery mode.

Never answered the question, but this question I have to answer!

A long time ago, I broke the brain-dead bar power button and volume down button, and even the home button was not very effective.

Other times it's okay It's not very affecting the use, the phone is Meizu Note3 has a floating home button, so it can be used to lock the screen, and it can also be restarted with a function similar to Siri when the phone is turned on, so everything is going on normally and happily.

However, fate always strikes you hard when you think he is peaceful.

Last night, after I happily used my handicapped mobile phone with a boyfriend**, the signal on my phone was less than 20%. Well, there's still a lot of power to pay. So I happily started to play Weibo again, and read the hot topics one by one, just when I was indulging in Hu Yitian's beauty, he suddenly popped up and the battery was less than 10%, well, it should be taken seriously, then I will charge it after reading this.

7% at once, so I still picked up the charging cable unhurriedly and plugged it in. Beep black screen! Well, that's okay, I have another phone to look at.

Hey, how do I turn on my phone when it's turned off, I suddenly realized the seriousness of the problem, and quickly took a look, and the battery was too low, please continue to charge. Oh, he should be fully charged and will drive it himself. So I played with another phone and gradually fell asleep.

Early in the morning, at half past eight, I woke up and looked, hehe, finally fully charged. Hey, why don't you turn it on, I'm still starting to panic. What to do?

Press the power button hard, it's useless. It's useless to press the home button too hard. Hey, I'll wait tomorrow Monday to see if the alarm clock will go off, and maybe there will be an option to turn it on after it goes off.

After a while, I still felt that I couldn't sit still, and I started to shout stupidly into my phone, hello Xiaoxi, please help me turn on my phone MD, mentally retarded, it's a turned off phone. Helplessly and hopefully, I turned on my other phone. Sure enough, after reading a few answers that were not feasible, I mixed a few answers, and turned on the computer!

First, press the volume up button (yes, I broke the volume down button, but God kept the up key for me!). After pressing, quickly plug in the power,At this time, a box popped up to update something,I just tentatively pressed cancel,Then the phone screen went black,Continue to press and hold the volume up button,He actually vibrate,I know I should succeed,Success!

There is no scientific basis for this method, and it should not work on all phones.

There is a method you can try, which is useful on some phones, which is to charge, press the volume down or up before plugging in (try both) Some phones can enter rev. Then press home to confirm, but some mobile phones are confirmed by pressing the power button, so it may not be feasible, but you can try, and if you are not in a hurry, you can send it for repair.

If you are using a vivo phone, this is the method of force restarting each model:

Press and hold the top round button for more than 10 seconds to force restart the phone (applicable to NEX 3 NEX 3S);

Models released after September 2017 (X20 and later), as well as new models that will be released in the future: Press and hold the "Power button" + "Volume Down button" at the same time for more than 10 seconds;

Models released before September 2017 (models prior to X20): Press and hold the "Power button" for more than 12 seconds.

In this case, it is recommended to conduct on-site testing of the physical hardware of the mobile phone in order to make a specific judgment.

In order to understand and solve the problems of the mobile phone in a more targeted manner, it is recommended to send the mobile phone to the nearest service center for testing, and the service center will determine the specific problems, accessories, and whether the mobile phone is within the scope of repair and maintenance according to the test results**. "

Find a mobile phone store to repair, the latter disassembles the phone case, and then finds someone else to repair... Anyway, don't move first, find someone else to fix it.

Mine is a Xiaomi phone, the phone is turned off, and the switch is broken. But the timer power on and off set before was really powerful, and then I relied on the timer to turn on and off, and the phone turned on. It's okay, I don't want to fix it.

Supplement. Huawei confirms by pressing the power button. So resign yourself to fate. Don't ask me how I know (teary eyes).

Plug in the headphone cable and it's on!

Breaking through the phone only requires you to press and press first, isn't there a volume? The volume of your security check, and then quickly rush to the electric park, you will turn on the phone and see that he will give you a choice, that is, Chinese Simplified ah or something, you click Chinese Simplified and then click to restart the phone, you will your phone will restart.

Cases of over-discharge. After the phone runs out of power and automatically shuts down, it will also immediately connect to the charger for charging, but it is possible that the phone will not respond at this time. This is caused by the battery being over-discharged and the voltage is too low to have normal charging and power-on conditions.

You can try to press and hold the power button for more than 10s first, if the phone vibrates, you can release the power button, and then connect the charger to charge for more than half an hour before turning it on.

When you press and hold the power button, the phone does not respond at all, then you need to plug in the charger while keeping the power button long, and release the power button after the phone vibrates and charge it normally for more than half an hour, and then turn it on.

The device does not turn on due to flashing. There are many uncertainties in the flashing process, and it is possible that the machine cannot be turned on normally after brushing. At this time, don't panic, press the power button and the volume down button at the same time in the shutdown interface, let go after vibrating, and see if you can enter recovery mode.

You can enter the recovery mode, find the clear data and cache in the recovery mode, and restart the phone after double clearing.

After Shuangqing, it still can't be turned on normally, and it is recommended that you can save bricks with a line brush.

If you can't enter recovery mode, then in the shutdown interface, press the power button + volume down button at the same time to see if you can enter fastboot mode. If you can enter fastboot mode, if the phone is not flooded, bumped, or dismantled, you can also directly try to solve the problem by wire brushing.

Unable to enter recovery mode and unable to enter fastboot mode, in this case, it is recommended to go to a professional repair shop to help try to solve it.

Be sure to back up your data first, and it's best to use a cloud backup.

2: The mobile phone is turned on and off in the case of power, and the same is true for repeated boots, and it is generally suspected that the power amplifier of the mobile phone motherboard is broken, because after the power amplifier of the motherboard is destroyed, the power amplifier of the mobile phone search network is short-circuited, so it can not be turned on. Why don't you take out the SIM card and turn it on again?

If it can be turned on, it is a problem of power amplifier empty objects.

Find a place to repair the mobile phone and replace the original He Sen parts of the power amplifier. Generally, twenty or thirty yuan can be done. Hehe.

I hope your phone is repaired soon.

This is the wire brush mode, press and hold the power button for 10 seconds to turn off and then restart.