[[High Compatibility] - This cell phone signal booster is compatible with all U.S. carriers (Verizon AT&T T-Mobile etc.) it can boost 4G LTE & 5G signals on band 2/5/12/17. [Automatic Gain Control] - The booster is equipped with AGC(Automatic Gain Control) function which can intelligently detect the input signal strength adjust the gain correspondingly for best [Powerful Antennas] - The booster comes with one high gain outdoor directional Log-period antenna and one indoor whip antenna expanding the coverage up to 4500 sq ft. [Easy to Set up] - The window entry cable is provided to help you route cable into house safely and easily. Signal Advisor APP is designed to help you find the direction of cell tower and check signal strength. [FCC Approved] - The booster comes with 3-year maximum warranty 90-day free replacement 30-day free return and free professional technical support. Our Customer Support Team are available to contact by live chat or email.]