How to set the number of Apple's 4s SMS center?

The method of setting SMS center number on iPhone is as follows:

1. Inquiry method: dial * # 5005 * 7672 # with iPhone;

2. Setting method: use iPhone to dial * 5005 * 7672 *+86 "SIM card home SMS center number" #;

3. Delete method: dial ##5005*7672# with iPhone.

Tips: The set SMS center number is generally similar to the mobile phone number after +86. When setting the number of the SMS center, please insert and unplug the SIM card again. It is suggested to delete the SMS center number first and then set it again.