The mobile phone failed to send a short message, displaying "Message not sent, please check the message and try again". What happened?

Re-enter the number of SMS center in SMS settings;

The phone bill balance is insufficient. Please recharge the phone bill and resend it.

Other reasons for information transmission failure are as follows:

There is something wrong with the signal;

There is a problem with the SMS settings;

Third-party software has set the function of limiting sending short messages;

Cancel the SMS function and call customer service for consultation;

Mobile phone problem, it is recommended to back up the data before restoring the factory settings. If the above tests are not enough, go after the sale.