Why can't I get a short message when I buy a courier on my Apple phone with someone else's number?

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

2. If you still can't get it after deleting it, I suggest you change the machine or card to see if it is a hardware reason.

3. Check whether it is intercepted by mobile phone interception software.

4. Check whether the cell phone signal is normal and try to test whether it can be received in other places. After removing the above reasons, it still can't be used normally. Please contact the local manual customer service to handle this problem.