There is no message on the mobile phone card. What should I do?

Mobile phone can't receive SMS, it's still a card. It is very likely that the memory of the mobile phone is full. Please close some background programs in settings and applications, and then restart to free up some memory.

Then check whether the short message box is full, and then observe whether all the short messages are not received or one or several numbers are not received. If you can't get them, call the operator's customer service to activate the SMS function ~

Then see if the security software in your mobile phone has set information interception, and you can cancel it.