Similar to the native Unicom network, you can't receive short messages after the delay.

The solution to the delay of receiving SMS in the native Unicom network is as follows.

1. The problem that Unicom's mobile phone number can't receive short messages temporarily is that the mobile phone hasn't received Unicom's signal network for some time, and the short messages are delayed.

2. This kind of problem only needs to fly the phone or restart the phone.