There is a SMS reminder before the call.

1,: This situation shows that the other party has opened the call reminder service. Incoming call reminder means that all incoming call information within 24 hours will be saved for you through the incoming call reminder platform when the mobile phone is turned off or out of service area.

2. Call someone to remind them that they have notified the incoming call reminder by SMS, which means that the other party has started the incoming call reminder service. When the user dials the number, it is in an undisturbed state or turned off. At this time, the call information will be notified to the owner by SMS.

This situation shows that this number is in normal use. It's not canceled or empty. The customer has enabled the call reminder function, which is a payment function enabled when the mobile phone cannot communicate normally due to reasons such as power failure or shutdown, poor signal or no signal.

4. In this case, it is possible that there is no signal on the other party's mobile phone, and then there will be a short message prompt in the process of dialing the past. Including his cell phone, if you don't want to answer other people's calls, you can't call in. At this time, you will remind him by SMS.