Apple 1 1 can't send a message. What happened?

Maybe the phone is off, or the airplane mode is turned on. If you owe money, you should repay it in time. The solution is as follows.

1. First, open the settings APP that comes with Apple 1 1 and ios 13.6, slide the interface, find and click the "Info" option.

2. In the information interface, you can see the option of imessage information, and open the slider on its right.

3. Then you need to check whether the flight mode is turned on in the setting interface, and if it is, turn it off.

4. Finally, shut down and restart, and then try to send text messages.