What's wrong with Apple's mobile phone displaying short messages but not seeing them?

Check whether the mobile phone has downloaded the latest third-party software (security guards, system management). It is possible that the software intercepted the message. I suggest you try to uninstall it. Try to replace another SIM card. If not, please back up the telephone information (phone book, short message, multimedia information, etc.). ) and restore the phone factory settings.

I didn't turn on the reminder in the notice. If I receive too many messages, I can delete them manually, and then it will be normal.

Spam messages are intercepted by security software. You can access the security software to view the intercepted spam messages. Some mobile phones have the function of trash can, and you can also check it inside. Or restart the phone. If the above methods cannot be solved, it is recommended to back up the mobile phone data to Apple Customer Service Center for testing.