How is it that Unicom card is disconnected from time to time?

The possible reason is that the signal will be affected by various factors such as topography, landforms and tall buildings. If the location is relatively closed, the signal will be affected. The treatment method is as follows:

1. Android version: restart the phone and try again; IOS system: restore the mobile phone network;

2. Replace the mobile phone card with the mobile phone of family or friends and try again;

3. See if there are any signals from other mobile phone users around; If the above situation has not been solved, it is recommended to contact the local manual customer service for handling.