Why can't I get a short message from my teacher?

There are several reasons why I can't receive the text message sent by my teacher:

1. There is something wrong with the mobile phone settings. Please check whether the inbox is empty.

2. Call the local school newsletter customer service hotline and ask if your mobile phone number has been added to the "school newsletter high-end number protection". High-end number protection is to prevent spam messages from being sent to your mobile phone.

See if your mobile phone number is in the school communication system.