Compatible with all US carriers, including: AT&T, Verizon, T-Mobile, Sprint, U. Boosts voiceb ng signal, I. Metal roofs on home, office, shop, pole building, warehouse, etc.. Enhances the signal up to 100X, with a coverage area of 2500 sq. Note: coverage area range depends on the outdoor signal level: 1-2 bars (-100dBm) 400 sq. 3-4 bars (-90dBm) 1300 sq. 5 bars (-80dBm) 2500 sq. Multi -user simultaneous connectivity: smart phones, tablets, modems, Wi-Fi hotspots can all directly connect at the same time. Automatically adjusts system gain and power level to get the optimum result. No manual intervention needed. Complete installation can be done in half an hour by one person. With a better incoming signal, cell phones require less output power to send and receive a signal. This can significantly reduce the required transmission power of mobile phones and therefore reduce the level of electromagnetic radiation exposure to the human body. At the same time, having a better signal reduces power usage, which saves your battery and can and improve battery life of phones on standby mode by up to an additional 2 hours. The item “SolidRF 4G S2 REFURBISHED High Gain Antenna Cell Phone booster for Home 5Bands” is in sale since Wednesday, February 5, 2020. This item is in the category “Music\CDs”. The seller is “solidrf-inc” and is located in St. George, Utah. This item can be shipped to United States.