The mobile phone has been used for a long time. There are too many data and the response is slow. I want to format the mobile phone, but I don't know. Here, I will do it myself and explain how to format the mobile phone.
First, turn off the phone. Remove the battery for three to five seconds before putting it into the phone. This is to ensure that the phone is completely turned off.
Then press the volume down key+power key. It is better to press the volume key first and then press the power key to go to the engineering mode interface.
Here, press the volume up and down keys to select the command, and the grid machine will select to clear the emmc.
After selecting, press the power key to confirm. The partition formatting interface appears. At this time, nothing needs to be done. Just wait.
After a while, this interface appears on the phone, indicating that the formatting is complete and restarting is in progress.
The reset interface shows that the cell phone is successful. Now the mobile phone program is just like the new mobile phone.