The wifi jammer can interfere with the wifi signal. Is this the reason why our company's wifi signal is getting worse? Wifi coverage is so ubiquitous that we can search for wifi anywhere, some require passwords and some are public wifi. Recently, I found that the company's wifi signal is very poor, which makes me use wifi very slowly. Sometimes I don't even want to connect to wifi, but there is no data traffic. Why is wifi signal worse? Can you give me an authoritative explanation?