Does the subject want to ask, "What if the logo of Apple's mobile phone is turned on and off?" ?

1, forcibly restart the phone. Press and hold the combination of the volume button and the power button until you see the Apple logo appear again.

2. Put the Apple mobile phone into rice or silica gel desiccant to absorb water. It is best to leave it for more than 24 hours before trying to turn it on.

3. Dry the interface and gap of the mobile phone with the cold air file of the hair dryer. Be careful not to use hot air file to avoid damaging internal components.

None of the above methods works. You can contact Apple's official after-sales or third-party repair shop for testing and maintenance.