Iphone text message hasn't been sent yet. What happened?

Apple's SMS results show that it was not delivered, mostly for two reasons.

The first reason is because of the network, because the card with slow or very fast network speed cannot be delivered in time. Another reason is that the mobile phone is in arrears, and there is no traffic, so it cannot be sent.

If the other party is turned off or out of service for a long time, the information can only be stored in the center for 48 hours, and the information is invalid. Users are advised to find a way to inform the other party to open it. Another possibility is that the message inbox of the other party is full and the message cannot arrive. It is suggested that users can notify each other to clean up their inboxes.

Solution:

If it is because the number of the SMS center is wrong after the mobile phone system is updated, the SMS cannot be sent. Try what:

1. Apple's mobile phone directly modified the number of SMS center, failed, execution error.

2. The recovery network settings are invalid.

3. Turn off and restart the volthe HD calling function, which is invalid.

4. Restart after re-plugging, which is invalid.

5. Changing the card to a 6s mobile phone is invalid.