Why is there no signal at Wulan Maodu Valley Hotel?

1, the building is blocked, the hotel room is located inside the building, the structure and materials of the building will block the transmission of wireless signals, and the signals will be disturbed.

2, signal interference, there are electronic equipment or signal sources in the hotel room, TV, microwave oven, wireless router, electromagnetic waves will interfere with the transmission of mobile phone signals, resulting in the mobile phone card can not receive signals.