The phone can't receive the call, but there is a missed call message.

This situation should be that the mobile phone has the function of opening the voice message of incoming call reminder. When your mobile phone is turned off or there is no service or signal, the incoming call will go to voice mail or hang up directly, and a short message will remind you of the missed message. Mobile and message functions are still comprehensive functions, integrating functions such as leakage prevention, call reminder and personalized reply. , and has a perfect sense of use.