If you want, you can also use aluminum foil to reflect and direct the Wi-Fi signal toward specific areas of your home. Just place a piece of aluminum foil behind the router's antennas and you'll have ...

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.

Because boosters use old-school antennas that literally grab a signal out of the air, you do need a signal somewhere nearby. They don’t work in areas of absolutely zero cell coverage.