Strange group phenomenon! Informed personnel help solve it! Phenomenon: I want to send messages to nine people in a group. It stands to reason that everyone should send nine messages. (see supplement)

There must be something wrong with the number of the SMS center. You may have chosen the wrong SMS mode. This should be in the SMS setting interface. There is an information center number. The mobile phone number is different from Unicom's, and it may have been accidentally changed. Listen,