The current online shopping is very convenient, online you can pick a variety of shields without leaving home, now the shields on the market are full-band, it can be all mobile, Unicom and Telecom three operators below the 2G 3G 4G signal and 2.4G WIFI signal and Bluetooth signal all blocked out. There must be shielding WIFI shield ah, wifi jammer is the frequency issued by itself interferes with the normal frequency of the receiving base station, so that the phone can not connect with the base station, so that you can not make calls, receive and send text messages and Internet access.
The current online shopping is very convenient, online you can pick a variety of shields without leaving home, now the shields on the market are full-band, it can be all mobile, Unicom and Telecom three operators below the 2G 3G 4G signal and 2.4G WIFI signal and Bluetooth signal all blocked out. There must be shielding WIFI shield ah, wifi jammer is the frequency issued by itself interferes with the normal frequency of the receiving base station, so that the phone can not connect with the base station, so that you can not make calls, receive and send text messages and Internet access.