Wired

Cell phone signal boosters are powerful devices. Installed in a home or office, they can potentially amplify one signal bar into five. In rural areas with poor cell coverage, or in buildings where signals have trouble penetrating, they can be lifesavers, providing reliable access to communication networks and emergency services. But boosters also have a dark side: if misconfigured or poorly manufactured, they can knock out service for everyone who happens to be nearby. That’s why the Federal Communications Commission began regulating the devices in 2014.