What should I do if my China Unicom card can send outgoing text messages but cannot receive them?

If your China Unicom mobile phone cannot receive text messages or verification codes, it may be due to the following reasons:

1. First check whether the mailbox is full. If so, please delete some information;

2. If you still cannot receive it after deleting it, you can change the phone or card to test to see if it is a hardware factor;

3. After eliminating the above reasons, you can try to test whether it can be received in other locations. , to see if it is due to weak local signal.