Compatible with cell phones, smartphones and laptop mobile!You need a cell phone repeater
We all know that network coverage is very poor in many areas. For this very reason, the demand for cellular repeaters is expected to grow quickly in the next few years. You are probably one of the many people who have decent cellular signal outside your home or office, but little to no signal inside. Let us help. Buy a Cell Phone Repeater or Cell Phone Antenna Booster to put an end to missed and dropped calls, poor battery life, and poor 3G and 4G coverage.
How extenders boost your cell phone signal
"In Building cell phone repeater type systems work by picking up a stronger signal from an antenna mounted on a pole or wall outside your building or high on a window inside your building, facing the cell site. The a cellular repeater system increases the signal and transmits it through the inside antenna to your cell phone or mobile broadband data card." -Alternative Wireless