What is the problem that Apple 6 SMS always fails to send?

Apple mobile phone can't send messages. When sending a message, you are prompted that the message has failed, which is generally a network failure. Mobile phones can't send text messages. The solution is as follows:

1. Open the SMS settings and find the information center in the SMS settings.

2. After opening, check the number of the information center. If it is not a string number of +86, you can enter +86 13800***500 in the number field of the information center and click OK.

3. Click resend on the failure message, and after modifying the correct information center number, the message can be sent immediately.

4. Whether the cell phone signal is normal or not, turn off the flight mode.

5. Check whether the SIM card status is normal.

6. Check whether the send key is displayed in bright color and clickable.

7. If you can't click Send after entering the text, the "Send" key is still gray. Please turn off "Show Subject Bar" in Settings > SMS >.

8. If it is a group message and the numbers are entered manually, please make sure to use line breaks instead of spaces to separate each number.

9. After the above problems are eliminated, you can first check whether the number of the SMS center is correct. If it is not correct, you can delete it first and then reset it. After the setting is completed, you can check whether the SMS center number is correct again.