Stationary 4G 5G Mobile Phone Signal Jammer with WiFi 2.4G Blocking for Prison Security This high-power stationary mobile phone jammer is engineered with premium-grade components to deliver reliable, wide-area signal blocking for correctional facilities and high-security sites. It effectively disrupts 2G cellular signals including CDMA, GSM, DCS, and PCS, along with 3G, 4G, and 5G networks, while simultaneously blocking WiFi 2.4GHz signals. Featuring high output power, this