Xiaomi 1 1pro vibration fault.

You can do this: open the back cover and tap the lower left area of the battery with your finger to see if it can be restored.

I heard that the vibration motor is there. On weekends, I went to the maintenance point to change the switch key. When I came back, I found that the vibration was invalid, so I knocked hard. It is estimated that when the repairman called for a day, the small copper piece that touched my mobile phone with the vibration motor did not reset normally. It's no use knocking a few times, so it will be repaired.