What happened to the wireless network card?

1. Restart the router, that is, turn off the power of the router for a while before turning it on. Because the router's cache data is emptied after power failure, it will run normally after restart. 2. Or press and hold the RESET on the router to restore the factory settings, which is equivalent to resetting the router to the initial state, and the network congestion phenomenon can be solved. If this problem occurs frequently, you can check whether your router is very hot. If the router is hot, it may lead to network congestion or even disconnection. So be sure to put the router in a place with good ventilation and heat dissipation. The reason why mobile phones can surf the Internet is that they have built-in signal transmitting and receiving devices. Communication operators form signal coverage in specific areas through satellites, base stations, switching antennas and other equipment. When the mobile phone is within the signal coverage, then the mobile phone can use the network through these switching devices.