What if Unicom card can't send and receive information?

The reasons why mobile phones can't send short messages are: 1, and the status of mobile phone cards is abnormal (such as arrears), so they can't send short messages; 2. The SMS in the mobile phone outbox is full. Suggest deleting the short message in the mobile phone outbox and try again. 3. SMS function is not enabled on the mobile phone card. It is suggested that you call the Unicom customer service hotline 100 10 to check whether the SMS function of the mobile phone card is opened normally; The SMS center number is incorrect. You can reset the SMS center number in your mobile phone. The number of SMS centers is the same in every province and city. For example, the number of Tianjin Unicom's SMS center is +86 130 130500. For Unicom mobile phone users in other provinces and cities, you can call the Unicom customer service hotline where the mobile phone card belongs.