The new Apple 4S mobile phone can't send short messages, but can only receive short messages. The functions of making phone calls and playing games on the Internet are all normal, but I can't send sho

The new Apple 4S mobile phone can't send short messages, but can only receive short messages. The functions of making phone calls and playing games on the Internet are all normal, but I can't send short messages. What happened? The processing method that the mobile phone cannot send short messages is as follows:

First, you can change your mobile phone and see if you can send and receive text messages;

Second, if you can send and receive short messages, I suggest you plug the card back into your mobile phone and send yourself a short message to see if you can receive it.

Third, if not, I suggest you check whether there is a problem with the sim card.

4. Check whether the number of the SMS center is set correctly;

5. Bring the mobile phone card to the local business hall for testing or replacement.