Why do you have to turn on the Lenovo P780 again after it has been turned on?

We apologize for the inconvenience. If the phone is turned on repeatedly, we recommend that you perform the following steps to perform a simple troubleshooting attempt:

1.It is recommended that you remove the back cover and battery and try to restart, if you can enter normally, it is recommended that you back up the body data and try to restore the factory settings;

2.If the above operations cannot be improved, it may be caused by abnormal system files or data loss on the device motherboard, and you need to flash and check the device. Due to the risk of flashing the machine and may lead to non-insurance, it is not recommended that you deal with it yourself, please take the time to go to the repair station and the engineer will assist you in testing and processing.

Of course, if you are willing to bear your own risk, I personally recommend that you go to the Lenovo Lewen Bar firmware area to find out.

Lenovo authorized repair site inquiry.

The business hours of the maintenance site are usually from 9:00 to 18:00 from Monday to Sunday, and the stations will be slightly adjusted according to their own operations.

There are generally two scenarios for auto-restart. 1. Hardware failure or conflict between hardware and hardware, poor hardware contact, etc. 2. Software failure, conflict between software and hardware or conflict between software and software

Solution: 1. Hardware failure is usually not easy to solve, because some reasons may be problems that have occurred in the production process of mobile phones, and usually require manufacturer warranty. 2. The simplest way to solve the conflict between software and software or software and hardware is to restore the factory value, and then observe whether there is a problem with the mobile phone without installing any software, if there is no software problem, or the mobile phone manufacturer has a software problem from the factory, and you can also brush different systems to observe whether the mobile phone has this situation.

Flash, you're having a problem with the software.

The back cover of the phone opens and there is a small red dot next to the memory card. That's it.

Hello. We apologize for any inconvenience caused.

It is recommended that you remove the back cover first, and then press the red reset button, if the problem persists, please send it to the repair site for testing and treatment in time.

Lenovo authorized after-sales site inquiry.

You are welcome to contact us at any time or visit Lenovo Lewen (for consultation.

You can brush it with a thread brush and a wrap thread brush + me.

The firmware package has a detailed tutorial (copy the firmware package, RE upgrade operation), please operate carefully, and ensure that the battery is sufficient before operation.

3. If you want to eliminate the problem of the system, or you can't effectively solve it by yourself, you need to take the time to go to the local Lenovo after-sales service center and let the engineer help detect and solve it. It may be caused by abnormal damage to the relevant components on the motherboard. You can log in to the official website to check the address.

If there is no root suggestion, remove the SIM card and TF card and then boot it to see if it will restart, if it will restart, it is likely that the hardware is broken, and I have encountered a bad touch screen that caused a restart.

If you have rooted, you need to flash the machine. Xiaobai recommends not following the trend of root, because it is easy to delete system files by mistake without knowing it after root.

You'd better get it after sales, they may tell you to flash the machine and ask them to brush it for you. To be honest, this machine is generalized, and mine is the P70. There are quite a lot of questions.