Hello, if you are using Unicom card, there is no signal at this position or the signal is very poor. It is not excluded that it is caused by other objective conditions. Because the signal will be affected by various factors such as topography, landforms and tall buildings. If your location is relatively closed, the signal will be affected. The treatment method is as follows:

1 Shut down again and try again;

2 change the mobile phone card to the mobile phone of family or friends and try again;

See if the signals of other Unicom users around are normal.

If you need to know the network situation of your current location, it is recommended to contact Unicom customer service in this regard.