Cell Phone Signal Booster for AT&T T-Mobile 700MHz 4G LTE Band 12/17 Mobile Signal Repeater Amplifier Antenna Kits for Home and Office Improve 4G LTE Data Rates, Supports Volte

The 4G LTE cell phone signal booster is designed for AT&T,T-Mobile 700MHz Band 12/17 frequency. The Cell Phone Signal Booster Antenna Kits will solve your Internet problem, and improves your Phone 4G Data and Calling voice quality. It can boost the cell signal from the cell signal tower to make it strong enough for your phone,so your phone would get clear calls and enjoy faster Internet. No long buffer times any more. The cell phone booster supports VoLTE (also known as Voice over LTE/HD Voice),reduces dropped calls. You will get crystal clear calls. It will not increase the 2G 3G signal,so please make sure your phone supports Volte. Kindly Note Band Confirmation : This booster can only boost for cell phones on band 12/17, please check which band your devices are using before purchasing. (For iPhone) :Dial *3001#12345#* ? Press call button ? Click 'Serving Cell Info' ? Check 'Freq Band Indicator'. (For Android-Method 1):Download 'LTE Discovery' APP ? Click ‘SIGNALS’ ? Check Band number. (For Android-Method 2):Download 'Network Cell Info Lite' APP ? Click ’GAUGE‘ ? Check Band number. External Signal Needed : The signal booster can only amplify signal but can't create signal. If there is no signal outside, it won't work, please make sure you get 1-2 bars signal outside. These things are absolutely critical for the cell phone signal booster to work: 1. Carriers use several bands throughout the US,but even if there is LTE service in your area,they may not be using the band. Please make sure your phone is receiving the band 12/17 frequency signal from the nearest cell signal tower. 2. Please kindly mount the phone booster follow the instructions in the included booklet,and make sure your phone could get 2-3 bars of stable signal at the place where the outdoor antenna will be mounted,and keep the outdoor yagi antenna towards nearest cell signal tower. 3. Keep the distance between the outdoor antenna and indoor antenna should be above 32ft and make sure a proper amount of physical separation between them that is absolutely critical for the cell phone signal booster to work. Package Include: 1*Cell Phone Signal Booster 1*Outdoor Directional Yagi Antenna 1*Indoor Omni-Directional Whip Antenna 1*50ft Coaxial Cable 1*12V 2A Power Adapter 1*Screws for Mounting 1*User Manual