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1. Press and hold the power button 10 second to restart the phone forcibly.
2. Try dual-clear mobile phone: Press and hold the volume increase button and the power button for 3 to 4 seconds at the same time when the mobile phone is turned off, and then release the button to enter recovery mode. First of all,
Select Erase Data/Restore Factory Settings, wait for the interface to jump, select Erase Cache Partition, and then select Restart the system immediately to restart the phone immediately.
Here you are (doing so will lose all the data on your phone (except the data on the TF card), including installed applications, phone books, text messages, etc. When the phone has no choice.
Only use this item when solving, and use it with caution.
3. Upgrade the mobile phone firmware, and you can go to official website to download the firmware upgrade package to restore the system. Before upgrading the firmware, it is recommended to back up the mobile phone data to prevent data loss.