Mini mobile phone signal jammer - boost mobile phone signal

Mini mobile phone signal jammer,boost mobile phone signal,Basic Info Model NO.: CPJ-P8 Protection Radius: Typical 2-20m Continue Using Time: 120minutes 2ggsm850MHz: 851-894MHz 2gdcs1800MHz: 1805-1880MHz 4glte2600MHz: 2620-2690MHz WiFi2.4G:...