Package Content 1* Indoor cell phone signal booster 1* Indoor whip antenna 1* Outdoor panel antenna 1* 50ft Outdoor 3D-FB coaxial cable 1* User Manual Technical Specifications Operating Band: Band 12/17 Max. Gain: 65dB Working Frequency: Downlink 728-746 MHz, Uplink 698-716 MHz Support Network: 5G N12, 4G, LTE Compatible carriers: AT&T/ T-Mobile/ Cricket/ US Cellular, etc. Applicable System: IOS, Pad, Android, WiFi hotpots, Windows Phone Systems Notice: The signal booster can only work on band 12/17. Please make sure your cell phone frequency band is 12 or 17. . . Fast Data & Clear Call Quality The ATT cell booster for cell phone offers higher call quality, faster uploads and downloads speed. Suitable for people needing streaming video, data-heavy apps such as Google Chrome, Safari, YouTube, Facebook, Netflix, Spotify, etc. Help you reduce dropped call. You don't need to stand next to windows or go outside the house to use phones any more. More Efficiently Work High gain antenna and cell signal booster offer strong and stable signal reception. You can have a fast network anytime, anywhere, and the signal amplifier repeater provides services for your efficient work and happy life. The best choice for companies, families and other multi-person occasions or remote areas. Wide Coverage Up to 4000 sq.ft The ATT cell phone booster for home supports multiple users and cellular devices simultaneously without network speed slowing down. The mobile signal amplifier's maximum coverage range can up to 4000 sq.ft for 2-4 rooms. You can have a pleasant resting life at home and a productive working environment at the company. Installation Notes: 1. Please make sure there are 2 bars outdoor your house at least, otherwise the signal booster can not work for your mobile phone. 2. The outdoor antenna and the indoor antenna must be kept at least 32 feet away, otherwise the amplifier will not work. 3. All antennas must be installed before the amplifier plugged in. Warm Reminder: 1. BEYLE Cell Signal boosters can only increase the original signal, not create it. If there is no signal outside, cell phone extenders signal booster won't work. Please make sure you get 1-2 bars signal outside. 2. The booster can only enhance the correct frequency. Please make sure band of your cell phones is 12/17. If you do not know what the frequency band of your mobile phone is, please refer to the following method to check.