What's the problem with my text message showing that it hasn't been delivered yet?

There are many reasons why the short message was not sent successfully, which can be handled in the following ways:

1. Confirm that the signal is normal and close the flight mode.

2. Check whether the SIM card status is normal.

3. Check whether the send key is bright and clickable.

4. If you send text messages to multiple people and manually enter numbers, please make sure to use line breaks instead of spaces to separate each number.

5. If you can receive or send SMS, it is recommended to check whether the SMS center is set incorrectly, reset the SMS center number and try again.