An curved arrow pointing right. The bars on your iPhone actually represent a signal range, not an exact signal. Here's how to change it to the exact signal you're receiving at the moment.

Cellular signal boosters use big antennas to improve coverage in your home or car. These are the top signal boosters for apartments, houses, and vehicles. I’m one of PCMag’s mobile analysts.

An curved arrow pointing right. The bars on your iPhone actually represent a signal range, not an exact signal. Here's how to change it to the exact signal you're receiving at the moment.