Turn on the phone and press the ring with your hand.

1, mobile phone settings, mobile phone settings problems, such as alarm clocks or incoming calls.

2, mobile phone vibration, mobile phone vibration, vibration has a cycle time, you can turn it off and then on to see if it is back to normal.

3. The problem with the mobile phone may also be that the wire inside the mobile phone is short-circuited. It is recommended that the mobile phone be repaired and checked. Don't disassemble blindly.