<b>The cell phone amplifier signal booster works with the Networks of 4G LTE 700 MHz Band 12/13/17. </b><br><br>cell phone antenna signal booster is compatible with Verizon/ AT&T/ T-Moblie/ Cricket/ Sprint/ Straight Talk. The Specified Operating Frequency is 700 MHz Band 12/13/17. Your cell phone currently operating frequency Band should be the SAME as this cell booster's, so the booster can Trigger signals connected properly between the Cell Tower and Cell Phone. The Cell Phone Booster Repeater Amplifier kit aimed at solving your Poor LTE 4G Network Problem and Cell Reception. The Cell Phone Antenna and Booster improve your Phone 4G Data and Enhance Calling voice quality. No longer Missed & Dropped Calls, enjoy high speed data. Convenient for using at Home/Office/Basement/Garage/Village/Remote areas.<br><b>How cell signal booster works </b><br><br><br>1.The outdoor antenna captures signal from the signal tower <br>2.The outdoor antenna transfers the signal to the cell booster via the Coaxial cable <br>3.The booster amplifies cell signal and sends it to the Indoor antenna <br> 4.The Indoor antenna rebroadcasts the signal insides to all mobile devices <br>5.The Booster amplifies outgoing cell signal back to the signal tower<br><br><b>How to find the band</b><br>Make sure mobile data ison and WIFI is off<br><b>iOS:</b><br>1. Dial *3001#12345#* and press call<br>2. Click Serving Cell Info<br>3. Click Freq Band Indicator <br><b> Android:</b><br>Download LTE Discovery/ SignalCheck Life/ Network Cell Info Lite.<br><br><b>Main Specification</b><br>Network: 4G LTE<br>Frequency:700mhz Band12/13/17<br> Compatible Devices: Android/iPhone/Tablet PC(Required SIM Card) <br> Booster Gain:Uplink 60±2dB;Downlink62±2dB <br>Coverage range:1500-2000sq.ft for 2-4 Rooms<br>Basic Outdoor Signal required: 2-3 bars 700mhz<br><br><b>Package Contents </b><br><br> 1x Verizon Cell Phone Booster 700mhz <br> 1x Indoor Whip antenna<br>1x Outdoor Yagi antenna<br>1x 50ft Outdoor3D-FB coaxial cable