If your mobile phone signal is unstable and weak, it is generally because 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, re-plug the card or change the machine for testing;

2. Try to change to another location to rule out whether it is caused by poor signal coverage at this location;

3. If the positioning signal is abnormal, you can record the detailed address and contact Unicom customer service 100 10 through the phone of friends or family.