Phonetone 70dB Band 12 Band 17 AT&T 4G LTE 700MHz Cell Phone Mobile Booster with Whip Antenna and Directional Yagi Antenna WORKS WITH AT&T,boost LTE 4G cell signal ,faster uploads and downloads. No more laggy internet connections or long buffer times while watching your favorite streaming tv shows and movies. Give your smartphone, tablet, data card, and notebooks boosted speeds all at the same time while using this Phonetone cell phone signal booster. Simple and easy to install: The simple instructions and DIY installation make it easy to get your new booster set up and working quickly. All of the components you need for installation are included in the package with easy to read, step-by-step instructions. Coverage up to 3000sqft,supports 50 simultaneous users,No more dropped calls. Max Gain: 70dB / Max output power : 27dBm; Power Supply: AC 100-240V / DC 12V 2.0A; I/O Port : N-Female on both ends Frequency range : 728--746MHz, 698--716MHz