Now the cell phone signal shield are full-band, it can be all mobile, Unicom and Telecom three carriers below the 2G 3G 4G signals and 2.4G WIFI signals and Bluetooth signals are all shielded, it is the principle of their own frequency to interfere with the cell phone receiving base station and wireless router issued by the frequency, so as to achieve the purpose of shielding them. Specific frequency bands are as follows:
1, CDMA band emission frequency 870-880MHz
2, DCS/PHS band emission frequency 1800-1920MHz
3, GSM band emission frequency 925-965MHz
4, TD-SCDMA band emission frequency 2005-2035MHz
5, WCDMA/CDMA2000 band frequency 2110-2175MHz
6, 2.4G band frequency 2400-2500MHz
7, 4G1 band frequency 2300-2390MHz
8, 4G2 band frequency 2550-2660MHz