Wi-Ex 800/1900mHz Dual-Band Booster. Boost Wireless Signal Booster, YX610-PCS-CEL Dual Band Wireless Repeater, Multiple Cell Phone Repeater Antenna is Better than femtocell to boost indoor coverage up to 10,000 Sq. Ft. It is a great way to improve cell phone connectivity WIRELESSLY for unlimited cell phones in an area up to 10,000 sq. ft.