What's the matter with the slow mobile phone Unicom card?

The reason for the poor signal is that the signal will be affected by various factors such as topography, landforms and tall buildings. If it is located in a relatively closed place, the signal will be affected. The treatment method is as follows:

1. Shut down again and try again;

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 Unicom users around;

If the above situation has not been solved, it is recommended to contact the local manual customer service for handling.