IPhone: Setting method: Just dial * 5005 * 7672 *+86 "SMS center number of SIM card" # with the iPhone. (For example, the number of Inner Mongolia SMS Center is 130 10950500).
Note: 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.
Other alliances suggest that you call 100 10 for customer service consultation.