What is the reason why the text message can't be sent out?

1, mobile phone arrears: mobile data, telephone charges, etc. All need to be deducted. If the phone is in arrears, the SMS function cannot be used.

2. Wrong number of SMS center: SMS center numbers in different regions may be different, and SMS center numbers are wrong, so SMS cannot be sent normally.

3. Insufficient storage space of mobile phone: The storage space of mobile phone is seriously insufficient, and there is no place to store short messages, which makes it impossible to send short messages. Short message, abbreviated as SMS, is a text or digital message directly sent or received by users through mobile phones or other telecommunication terminals. The number of characters that users can send and receive SMS at a time is 160 English or numeric characters or 70 Chinese characters.