1. After the phone is turned off, press and hold the power button for 3 seconds to enter recovery mode.

2. After the mobile phone vibrates, release the volume up key and volume down key and keep pressing to enter.

3. Then use the volume up and down keys to operate the movement, and then press the power off key to confirm the selection. Select wipe, the first double clearing operation of factoryreset, that is, restore the factory settings, press the shutdown key to confirm, and then you can select YES to clear the data.

4. Then continue to select wipecache to clear the cached data. Press the volume button, move the cursor to select wipecache, and then press the power button to confirm.

5. Select rebootsystemnow to restart the phone. After the restart, a boot screen will appear, and the unlocking is completed successfully.