The mobile card is inserted into the OPPO mobile phone, so it can't send and receive short messages normally.

The mobile card is inserted into the OPPO mobile phone, so it can't send and receive short messages normally. It is recommended to call the customer service hotline of the communication operator to switch to manual operation, and consult the information parameter setting in detail. Compare and observe the changes of sim card of mobile phone, and eliminate the faults of sim card. After the above attempts, the problem still exists. After backing up the important data files in the mobile phone, take the mobile phone to the local OPPO customer service center for free testing and reinstall the mobile phone system. You can quickly find the address and telephone number of OPPO Customer Service Center in the following ways:

1. Enter the OPPO official website-Service-Service Network for inquiry; 2. Enter OPPO+- Home-Recommendation-Customer Service-Service Network.