What's wrong with sending a short message that others can't receive?

1, first make sure that not everyone or just friends received it.

(1) If only a friend can't receive it, it is suggested that the other party check whether the phone is down or turn on interception.

② If you can't receive all the messages sent to your friends, please check whether the number in the SMS center is correct and try to reset it.

2. If all the above operations fail, switch the mobile phone card to another mobile phone for testing and confirm whether it is a mobile phone or a sim card.

3. Contact the mobile phone seller for the reason of mobile phone, and contact the mobile phone operator for the reason of sim card.