Tri Band signal Booster Repeater 900/1800/2100mhz GSM 2g/3g/4g signal Repeater with Two Ports indoor Antenna Cell Phone Signal Booster 900/1800/2100MHz 2G/3G/4G Mobile Signal Amplifier Repeater, Cell Signal Booster for Home The mobile phone signal repeater is strong and covers a large range around 150m²/1614ft². So you do not need to worry about missing phone calls or network. The signal repeater can effectively enhance mobile phone signal strength, improve communication quality, reduce cellphone radiation, and protract cellular battery life. The signal repeater has nice performance, high gain, low operating temperature, and ultra-low noise receive