Traffic SMS can't be sent out. What's wrong with the phone bill?

1. According to the information you provided, if you mean there is no service, it cannot be used for the replacement test. It is not excluded that your mobile phone card is faulty or there is no network signal in your location. I suggest you go to other places to test it, and pay attention to whether the users who use Unicom cards around you can use it normally.

2. If it still can't be used normally after self-service troubleshooting, it is suggested that you can contact Unicom's manual customer service for verification. The actual situation is subject to local policies.