Phonelex ATT Cell Phone Signal Booster T-Mobile 4G LTE Band12/17 700Mhz FDD Cell Booster Amplifier Repeater AT&T Mobile Signal Booster Indoor Ceiling/Outdoor YaGi Directional Antenna Kits for Home The cell phone signal booster work for AT&T T-Mobile 700MHz 4G LTE, it can receive the signal from the signal tower ,and then amplifier your mobile signal , This cell signal booster amplifier supports any phones for any Wireless Carriers in the frequency range : Downlink :728-746 MHz Uplink : 698-716 MHz Supports voice and 4G data for 4G/LTE mobile phones, including IOS , Android, Windows Phone Systems, etc., better cell phone voice quality, faster uploads and downloads Data ,Get fewer Missed calls, The mobile signal Amplifier 's Coverage Range can up to 1500-2000 sq.ft , solve your bad mobile network signal and enjoy your Nice time. This cell phone signal booster is designed for band 12 Band17 AT&T T-Mobile 700mhz cellular band , Much faster high-speed 4G LTE internet. Perfect for people needing fast uploads and downloads for streaming apps such as Google Chrome, Safari, YouTube, Netflix, Pandora, Spotify, and other data-heavy apps. Nice performance , High Gain ,Low Operating Temperature, Ultra-Low Noise Receive,perfect Indoor Ceilling and Outdoor Directional YaGi Antennas kit , For Multiple Devices and Users The cell phone signal booster repeater is used for Village,Garage,Basement,Home,Office , hotel, apartment and so on . FCC authentication certificate ,30 days- Money back Guarantee, One Year Manufacturer Warranty , All parts is included in the kits, It's very easy to install,