... range :850/1900mhz Coverage:300-500square meters Indoor Mobile signal booster 850/1900MHz Dual band signal repeater/booster GSM repeater dual band 850/1900 Be ... booster: Mobile signal repeater is also called mobile signal booster, mobile signal amplifier, cell phone repeater, cell phone booster, cell phone amplifier, cellular booster, cellular signal booster, signal amplifier, phone signal ...