The weBoost is only designed to improve the cellular reception in your home. It does not interfere with or boost in-home WiFi signals. It uses a small outdoor directional antenna (normally mounted on the roof or under the eaves) to pick up the cellular signal from the best available cellular tower. Coaxial cable takes the cellular signal from the outdoor antenna to an indoor booster that amplifies the cellular signal and passes it to a small indoor antenna. Images of the components can be seen at https://www.weboost.com/.