Xiaomi 9se forgot the power-on password.

If you forget the screen lock password of the mobile phone or tablet, you can wait for the mobile phone to restart in the off state-hold down the power button and the volume+button at the same time-until the mi sign appears-and choose to clear the data.

This operation will erase your personal information, such as SMS, contacts, call history and account number.

You can log in to the cloud service to confirm whether your mobile phone data is backed up in the cloud.

After clearing the lock screen password in this way, if the "find mobile phone" function is turned on before, you need to enter the Xiaomi account password to enter the system normally, otherwise you can enter the system directly.