Build a cell phone jammer - phone jammer build version

Build a cell phone jammer,phone jammer build version,Main Features: Jamming Device: Cell Phone,Wifi,GPS Jamming Signal: GPS,Wifi,3G,GSM,CDMA,DCS,PCS Jamming Area: 5 - 40 Meters in diameter Specifications: Jamming Frequency: GPS: 1570-1580MHz WIFI...