LETV mobile phone 2 x620 automatically shuts down when charging, and it can t turn on after 10

1 If it is not an all-in-one machine, take out the battery, charge it with universal charging for 15 minutes, and turn it on to try it.

2 Replace a charger data cable and try it.

3.Flash. Method 1:

1) Turn off the phone completely.

2) Press and hold the volume + button and the power on button at the same time in the shutdown state until the recovery interface appears.

The 5 options in recovery mode are explained as follows:

Reboot System Now--- reboot your phone.

Wipe Data Factory Reset--- erase the data area, which is equivalent to a factory reset.

wipe cache partition --- erase the cache area.

3) Use the volume button to select and the power button to confirm in recovery mode. You can perform operations such as factory reset, and complete factory recovery through recovery mode

1.After entering the recovery mode, select "Wipe Data Factory Reset" by "Volume-" button, and press the "Power button" button to confirm (to enter the next interface).

2.Use the "Volume-" button to select Yes Delete All User Data, and use the "Power Button" key to confirm that the data partition data is cleared.

3.After entering the recovery mode, run the "Volume-" key to select "Wipe Cache Partition" and press the "Power key" key to clear the cache partition data.

4.When you're done, select Reboot System Now and press the "Power Button" button to reboot your phone.

How did you solve it later? Do you want to replace the battery?

The reason for this to occur is most likely that the battery has gone to sleep or that the battery has been damaged and will require us to try several methods to activate it again.

Charge for 30 minutes with the original charger;

If the battery is sufficient, try to go into engineering mode, clear the cache, and then reboot;

Connect your phone to a power bank or computer to charge.

If the above methods are useless, you can only replace the battery or return to the factory.

If something goes wrong, go straight to after-sales.

First of all, you have to determine whether your mobile phone is really charged, and whether the battery has power can be measured with a multimeter.

If the battery is charged, you press the power button to see if the indicator light is on (most mobile phones have a power on, usually on the Tianji key or keyboard), if it is bright but not turned on, it may be that your display screen is loose, although it is turned on, but the screen can not be displayed, you think it is not turned on.

If there is no response when you press the power button, there may be more problems, the simple point is that the pole piece of your mobile phone is not in good contact, and then the power circuit is broken, the program is dropped, and finally the motherboard is broken and will not turn on.

Operation method: 1. If the mobile phone cannot be turned on, it may be that the battery is dead, use the charger to charge the mobile phone for half an hour, and then turn it on again.

2. Sometimes the phone is dead, which causes the phone to not turn on, you can press and hold the power button for 10 seconds to try.

3. If the above methods cannot be solved, it is possible that the hardware of the mobile phone is broken, and then you need to take the mobile phone to a repair shop for repair.

Don't worry, change the charger or connect the data cable to the computer after charging, press and hold the power button to turn on the computer.

Press and hold the power button for 15 seconds or press and hold the volume up button + power button in the power-off state until the recovery interface appears, then click Restart to try.

One is not because of the problem with the charging cable, and the other may be a problem with your phone jack.

Reasons and solutions for the mobile phone not to turn on: 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 there is a change in the indication, if there is no change, it is likely that the boot line is broken or the boot key 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 not normal

Test on the test point of the peripheral circuit of the power supply IC according to the circuit schematic diagram 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 Conflicts:

The installed software does not match the system of the mobile phone, which may also cause the mobile phone to not turn on, you can connect the mobile phone to the computer to delete the program.

Method 1, first turn off the battery (if it is a removable battery, please take out the battery for 2 minutes and then reinstall it), then charge the phone for half an hour, press and hold the power button after charging, and see if it can be turned on.

Method 2: When the phone is turned off, press and hold the power button and the volume down button at the same time, about ten seconds, enter the recovery interface, use the volume button to select and restart the phone, and use the power button to confirm and restart the phone.

Method 3, enter recovery mode (recovery mode), press and hold the power key and volume + - key in the shutdown state, it varies from machine to machine, select wipecache first choose: clear cache partition, shut down and boot to try whether you can enter the system, if not, you can choose again: clear data, restore factory settings (Note:

This method is used with caution and may cause the loss of important files and data in the phone. Then turn it off and on to see if you can enter the system. If you can't get into the system, double wipe (i.e., "wipedatafactoryreset" and "wipecache").

If after the above steps are executed, the screen is black after booting, that is, nothing is displayed, but the screen is on, please connect the computer with a data cable, the computer will automatically recognize and install the mobile phone driver, and then use the computer to install a desktop software on the mobile phone or enter the corresponding mode of recovery mode, and the method of entering is the opposite of recovery mode.

1. First of all, make sure that your phone battery is above 50%. Of course 100% is the best.

3.Turn off your phone. Leave on for 30 seconds.

4.Open your us software in detailed steps:

1) The first time you start us, it will be slow, wait patiently.

2) Check the license agreement and get started.

3) Select the device model, and then go next.

4) Follow the prompts to operate (simply put, press and hold the back button without releasing it, and then connect the mobile phone and the computer with a data cable, still do not let go until it is recognized) The rest can be operated according to the prompts, which is very simple. The last step, ?Start with the official ROM on your CDA server and finish before you can start the installation (tip:

5) If the above operation cannot be turned on, find a professional to brush the machine or go to the local after-sales service for help.

If you can't turn it on when you turn it off, it is recommended to try to turn it on again after charging, if it still can't turn on, please see if the battery is loose, reinstall it, or if it doesn't work, you need to repair it.

Reason]:1Battery reasons. Check whether the power is sufficient, whether the battery is deformed, loose, etc., charge for more than half an hour and try again (suitable for mobile phones that have not been used for a period of time), and replace the battery.

2.Check if the keys are out of order.

3.Software reasons. For example, if you have brushed an unofficial system or rooted, you can brush the official ROM to try it.

4.Hardware reasons. For example, water ingress, dampness, falling, etc.

5.All-in-one machine, press and hold the power button for 15 seconds, if it can't be turned on, try again after charging for half an hour.

Workaround]:

1.Press and hold the power button for 10 seconds to force restart the phone.

2.You can try charging for 20 minutes, then press and hold the power button for 10 seconds to see if it can turn on (the phone is completely out of power and recharged without any prompt).

3.When the phone is turned off, press and hold the volume up button and the power button at the same time for 3 to 4 seconds, after the vivo phone logo appears on the phone, let go of the button to enter recovery mode, first select wipe data factory reset, select wipe cache partition after completing the waiting interface jump, and select reboot system now to restart the phone immediately after completion. Doing this will result in the loss of all data on your phone (except for the data on your TF card), including installed apps, books, text messages, etc. When there is a serious abnormality in the mobile phone and there is no other way to solve it, use this item with caution.

The display is faulty.

The system has not been upgraded and the system is unstable.

There's something wrong with the phone itself.

The installed software is in conflict with the system.

The tail cable is broken or the battery is broken, and the power cannot be supplied.

System firmware compatibility issues.

LETV was founded in 2004, founder Jia Yueting, LETV is committed to building a complete ecosystem based on the ** industry, content industry and intelligent terminals"Platform + content + terminal + application", which is known as the "LETV model" by the industry. LETV's vertical industry chain integration business covers the Internet**, film and television production and distribution, intelligent terminals, large-screen application markets, e-commerce, Internet intelligent electric vehicles, etc.; Its subsidiaries include LeTV, LeTV Zhixin, LeTV Pictures, Wangjiu.com, LeTV Holdings, LeTV Investment Management, LeTV Mobile Intelligence, etc.

In 2014, the total revenue of LETV's whole ecological business was close to 10 billion yuan. In December 2014, Jia Yueting announced LeTV's "SEE plan", which is to build a super car and an electric ecosystem for the automotive Internet. On April 14, 2015, the LETV super mobile phone conference was held in Beijing, and entered the mobile phone industry with an ecological model.

On July 21, 2017, at the board of directors of LETV held in the form of a ** meeting, Sun Hongbin was elected chairman of LETV. On the evening of September 27, 2017, LETV officially released the "Announcement on the Resolution of the 48th Meeting of the Third Board of Directors", which will officially change the company's name to "New LETV Information Technology (Beijing) Co., Ltd.". Correspondingly, the abbreviation will be changed from "LETV" to "New LETV".

1. Analysis of the causes of similar charging problems:

1. The battery is damaged. 2. System failure. 3. Charger reasons or poor contact.

Second, the solution:

1. Try to change to another charger or data cable, or clean the charging port.

2. Boot into recover mode, select advancsd advanced mode, and select wipe?battery?to remove battery traces.

3. Restore the factory settings to see if it is the system reason.

4. If the battery is damaged, it can only be sent for repair and replacement.

1. Analysis of the causes of similar charging problems:

1. The battery is damaged. 2. System failure. 3. Charger reasons or poor contact.

Second, the solution:

1. Try to change to another charger or data cable, or clean the charging port.

2. Boot into recover mode, select advancsd advanced mode, select wipe battery, and clear battery traces.

3. Restore the factory settings to see if it is the system reason.

4. If the battery is damaged, it can only be sent for repair and replacement.