Why can't the mobile phone card send a message?

If the positioning signal is normal and the number status is normal, it is recommended that you check according to the following methods:

1. Check whether a number is given or all numbers cannot be sent;

2. Check whether the mobile phone blocks the short message sending and receiving function;

3. Check whether the SMS mailbox is full. If yes, please delete some information.

4. Check whether the number of SMS center is set correctly. For example, the number of Beijing Unicom SMS Center is+861301kloc-0/12500.