What should I do if my phone suddenly runs out of battery and then it won t turn on?

There are many factors that the mobile phone cannot be turned on, and the battery, mobile phone software, and hardware will cause this kind of failure to turn on. We recommend trying the following:

1.Please do it again: press and hold the power button to check whether you can enter the boot interface.

2.If you can enter the boot interface, but your phone cannot enter the home page, please restart your phone to try. The steps are as follows:

Press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device (Note: Some models need to press and hold the power button for 8-10 seconds to restart the phone).

If the problem persists, it is recommended that you bring the purchase invoice, warranty card and mobile phone to the local Samsung service center for professional engineers to help you test.

3.If you press and hold the power button to enter the boot interface, check whether the battery is too low, please connect the phone to the original charger and charge it for a period of time before turning it on. If it still does not turn on after a few minutes of charging, it is recommended that you bring the purchase invoice, warranty card and mobile phone to the local Samsung service center for professional engineers to help you test.

What should I do if my phone suddenly runs out of battery?

1. The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the electric meter to detect whether the indication has changed, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact.

2. The power supply circuit of the battery is abnormal: use the external interface to supply power to the mobile phone, see if it returns to normal when it is turned on, if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal.

3. The IC of the mobile phone power supply is abnormal: the schematic diagram of the control circuit is outside the power supply IC.

The test is carried out on the test point of the perimeter circuit to see if the test value is normal.

4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone to check whether the waveform in the reset is correct.

5. Problems with logic circuits: that is, faults in the circuit version of mobile phones, which can generally be solved by repair welding.

6. Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to fail to boot, you can connect the mobile phone to the computer to delete the program.

7. If it is a copycat mobile phone, then I estimate that it can't be turned on because the chip inside is burned, or some of the small parts inside are loose, but this situation will only appear if you drop it, the chip burns may be because you charge it for too long, burn the chip, if the battery has electricity, that is these aspects, if it is a brand-name mobile phone, such as Nokia, Motorola. These situations are rare, unless it is artificial, if it is a brand-name smartphone, and it is not used improperly, it is a software problem, it may be a system crash, or because of the mobile phone poisoning caused by software damage, generally this can only go to the maintenance office, however, I think the biggest possibility is caused by static electricity, it is recommended that you do not open the blind repair, or go to the maintenance office!

Summary. If you are sure that the mobile phone has power, you can try the following methods to solve it: 1. Press and hold the power button for about 10 seconds to turn on the phone.

2. Replace the battery and eliminate battery failure. 3. Press and hold the volume up, volume down and shutdown buttons in the shutdown state, and let go when the boot screen appears, and you can enter recovery. Enter Recovery Chinese Clear Data Empty All Data ) Select Chinese Simplified and confirm, volume key select Power key to confirm, select will install to system and confirm.

Select Confirm, wait for completion, and select Restart to system to enter the new system. 4. If none of the above operations can be turned on, it is recommended to send the mobile phone to a nearby after-sales outlet for maintenance and testing. I hope it can help you.

What's going on if the phone can't be turned on when it's powered.

If you are sure that the mobile phone has power, you can try the following methods to solve it: 1. Press and hold the power button for about 10 seconds to turn on the phone. 2. Replace the battery and eliminate battery failure.

3. Press and hold the volume up, volume down and shutdown buttons in the shutdown state, and let go when the boot screen appears, and you can enter recovery. Enter Recovery Chinese Clear Data Empty All Data ) Select Chinese Simplified and confirm, volume key select Power key to confirm, select will install to system and confirm. Select Confirm, wait for completion, and select Restart to system to enter the new system.

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If the vivo mobile phone you use does not turn on due to a crash or liquid ingress, it is recommended to bring the mobile phone to the vivo customer service center for processing.

The screen does not light up when it is turned on, and the phone does not vibrate and other reactions:

1. Check whether the power is sufficient, use the original charger and data cable to charge for more than half an hour, and try to turn on the machine again;

2. If the keys of the mobile phone are stuck, broken or liquid, please bring the mobile phone to the vivo customer service center for further maintenance.

The phone screen is on but you can't enter the desktop

1. You can try to force restart the device to resume use;

Ways to restart your phone:

1) Press and hold the power button of the mobile phone to pop up the "Restart" option to turn it off;

2) Slide down at the top of the screen to bring up the shortcut details page for the second time, slide up at the bottom of the screen to enter the control center, and click the "Shutdown and Restart" switch;

3) Force restart the phone (it is recommended to use it when the phone is frozen or stuck).

FunTouch OS and later models: Press and hold the "Power button" + "Volume Down button" at the same time for more than 10 seconds;

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

FunTouch OS previous models: Press and hold the "Power Button" for 12 seconds or more.

2. Try to repair the system through the "System Repair Mode" as follows:

Step 1: When the phone is turned off or restarted, press and hold the "Power Button" and "Volume Up Button" at the same time for 10 seconds before the screen turns on, until the screen displays the word fastboot and then releases the button;

Step 2: Press the volume down button to move the cursor to "Enter Recovery", press the power button to confirm the entry, until the screen displays the word recovery, and the device has entered recovery mode.

Step 3: Select "Install System Software" on the Recovery mode interface, and then select "Update the latest version online" to repair the system according to the prompts.

The phone vibrates when it is turned on but the screen does not light up:

When the phone vibrates when you press the power button to turn on or force restart, but the screen does not display the screen and the screen is still black, it is more likely that the screen is faulty, please bring the phone to the vivo customer service center for further maintenance.

It is inferred that the subject is not chaotic because of the water and the reason for dropping the mobile phone, which causes the hand banquet machine to not turn on.

If it is because of battery problems, it may be one of these three situations.

1. The boot circuit is abnormal 2. The power supply circuit of the battery is abnormal 3. The IC of the mobile phone power supply is abnormal.

In this case, you need to apply for after-sales repair.

It is not caused by battery aging and other reasons, you can try this method, press and hold the "Power Boom Clan" and "Volume + Key" at the same time to force the power on, if it is not caused by hardware damage problems The shutdown can be turned on.

Hello dear! I'm glad to answer for you: What should I do if my phone suddenly can't turn on when it has power?

Hello dear, the reasons why the mobile phone battery is charged but can't be turned on are: 1The boot line is not normal:

It is recommended to use an external power supply to power the mobile phone, use the telephone meter to detect whether the indication has changed, if there is no change, it is likely that the power cord is broken or the power button is not in good contact. 2.The battery's power supply circuit is not working properly:

Use the external interface to power the mobile phone, see if it returns to normal when it is turned on, if it is normal, it is sure that the lead seepage is that the power supply circuit of the mobile phone is abnormal. 3.The IC of the mobile phone power supply is not normal:

It is recommended to test the test point of the peripheral circuit cavity leakage of the power supply IC according to the circuit schematic diagram to see whether the test value is normal. 4.The phone's system clock and reset are not normal:

It is recommended to use a dual total oscilloscope to check the CPU power supply of the broken phone to see if the waveform is correct during the reset. 5.There is a problem with the logic circuit:

That is, the fault of the mobile phone circuit version can generally be solved by repair welding. 6.Software Conflicts:

The installed software does not match the system of the mobile phone, which may also cause the mobile phone to not turn on, it is recommended to connect the mobile phone to the computer to delete the program. 7.There is a problem with the internal parts of the phone.

It should be the line arrangement. 8.Maybe it's because the SD card is infected with a virus, and my phone has been like this, so it should be okay to change the card.

9.Check the mobile phone, charger, and battery, if there is no fault, it is the performance of the battery's service life expiration, or the quality of the battery. If you have any questions, you can feedback to me in time!