Why can t Xiaomi Mi 2A turn on after auto shutdown?

Hi! 1. Please remove the battery for 5 minutes, connect the computer and mobile phone with a data cable for 30 minutes, and try to turn on the battery again.

2. If it still can't be turned on, please try to back up your data, try to enter recovery mode (power off and press and hold the volume up + power on button) or fastboot mode (power off and press and hold the volume down + power button + meter key) to flash the computer.

Please follow the flashing tutorial to flash the machine, and the sixth way is line brushing.

Address 3: If you can't enter, please try to connect to the computer to recover.

Here's how. A more detailed description of the problem will help netizens understand the troubles you are encountering and help you solve the problem more accurately. Thank you for supporting Xiaomi phones!

Here are some things to try:

1.Charge with a cable charge for a while and try to turn it on, or replace a phone battery of the same model.

2.Take out the SIM card and SD card at the same time and try to power on again.

3.If the issue persists, it may also be related to third-party software that you have installed yourself**. When you see the logo icon when you reboot, press and hold the [Menu Key] (left touch sensitive button) until the word "Safe Mode" appears in the lower left corner of the screen, and then let go.

4.If you still can't turn on the computer after uninstalling the app, you can follow the above methods to enter the "safe mode" and back up your data (for example: contacts, text messages, **, etc.) and restore the factory settings.

5.If you can't enter the safe mode and can't turn it on, it is recommended that you bring the three-pack certificate of your mobile phone and send your mobile phone to the nearest service center for testing and maintenance!

Hi! This is the phenomenon of power loss and dormancy after the battery is over-discharged, which belongs to the self-protection of the battery, clean up the contact point between the battery and the mobile phone, and use the original charger to charge the mobile phone for 20-30 minutes.

Usually develop a good habit of charging at any time, you can charge it when it is full, and the power is less than 20% must be charged, and it is easy to damage the battery or even damage the mobile phone if you lose power and overcharge.

Also, do not charge the Xiaomi battery with a universal charger, long-term use of the universal charger will damage the battery!

If you can't turn on the machine for half an hour, wait a while and try it for a few hours. If it doesn't work for a long time, it means that there is a problem with the battery. It needs to be sent for repair.

Xiaomi Home :

Hi! Dear, Sanqing data can solve your problem, caused by data conflicts. Three clear data, power off - volume up button and press the power button at the same time - recovery mode - clear data - clear all data.

Formatting,Turn on and press the boot button and volume key,I forgot the specific time,You look for it,Don't try to flash the machine,If it doesn't work, there should be software problems,Then you have to go to after-sales。

This kind of problem can only be re-flashed. You can go to the official website ** a corresponding rom. If you don't know how to brush, there are also very detailed tutorials for brushing roms. The battery should be more than 50% charged.

New machines? First of all, make sure that there is a battery with electricity, and if there is electricity, deduct the electric board, and then install it.

3.If it still can't be restored, please go to a repair center near you for repair testing.

Address and ** inquiry.

Xiaomi Mi 2A can't turn on detection method:

1. The boot cord is not normal and the boot is not turned on.

Under normal circumstances, when pressing the power button, the trigger terminal voltage of the power button should change significantly, if there is no change, it is generally due to poor contact of the power button or the power line is broken, the component is soldered, and damaged. When repairing, use an external power supply to supply power, observe the change of the ammeter, if the ammeter does not respond, it is generally a disconnection of the power line or a bad power button.

2. The battery power supply circuit is not turned on due to poor operation.

For most mobile phones, after the mobile phone is added to the battery or external power supply, the power supply voltage is directly added to the power supply worker C, if the power supply voltage is not added to the power supply IC, the mobile phone cannot be turned on. For this kind of mobile phone powered by electronic switches, it can be powered by an external power supply interface, or it can be powered by an external power supply through the battery contacts. During maintenance, the power supply can be provided by different power supply methods in order to distinguish the fault range and determine whether the electronic switch is normal.

Generally speaking, if the power supply circuit is bad, pressing the power button ammeter will not respond, which is very similar to the bad power line.

3. The power supply IC is not turned on due to abnormal operation.

For the mobile phone to work normally, the power supply circuit should output a normal voltage to supply the load circuit. In the power supply circuit, the power supply IC is its core circuit, different varieties and models of mobile phones, the power supply mode is also different, some power supply circuits are supplied by several voltage regulator tubes, and some have a power module directly supplied, For the power supply IC, the focus is to check the logic power supply voltage of its output, 13MHz clock power supply voltage, which should be able to be measured in the process of pressing the power button (not necessarily maintained), if it cannot be detected, in the case of the power supply button and battery power supply is normal, it means that the power supply IC is soldered and damaged.

In two cases, first, there is a problem with the components on the motherboard of the mobile phone, which causes the mobile phone protection to shut down, for example, there is a problem with the power detection of the power amplifier, which leads to the increase of the working power of the power amplifier and the overload protection starts; Second, software conflicts, as mentioned on the first floor, can be adopted. Of course, this fault is also separated from shutting down after the machine and shutting down when standby or shutting down when using a certain function, the reasons are different!