My parents’ house is in a cellular dead zone. One bar in the kitchen, zero in the living room. Phone calls drop if you walk from the fridge to the couch. For years, the solution was “go outside and stand near the mailbox.”

Then my dad discovered WiFi calling and suddenly he could make calls from his basement workshop. Same phone, same carrier, same house. The only difference was a setting buried in his phone’s menu.

Step one: WiFi calling

Almost every modern smartphone supports WiFi calling. It routes calls and texts through your WiFi network instead of the cellular network. If you have bad signal at home but good WiFi, this single setting solves the problem for free.

On iPhone: Settings → Cellular → WiFi Calling → toggle on. On Android: Settings → Connections → WiFi Calling → toggle on. The exact path varies by carrier and Android version, but searching “WiFi calling” in your settings search bar finds it.

Step two: move to a window or go upstairs

Cellular signals are radio waves. Walls, especially concrete and brick, block them. Metal roofs and energy-efficient windows with metallic coatings are signal killers. Moving to a window can add a bar or two. Going upstairs — above ground-level obstructions — helps even more.

I know “go stand by the window” sounds like a joke, but radio physics doesn’t care about dignity. When I’m at my parents’ and need a clear call, I sit on the floor against the south-facing window. It works.

Step three: toggle airplane mode

Sometimes your phone is clinging to a weak tower when a stronger one is nearby. Toggling airplane mode on and off forces the phone to re-scan for the best available tower. Takes five seconds and fixes more signal problems than you’d expect.

Longer-term solutions

If WiFi calling isn’t an option and your home consistently gets poor signal, a cell signal booster might be worth it. These have an outdoor antenna (mount it high, where signal exists), an amplifier, and an indoor antenna that rebroadcasts the signal inside. They cost a few hundred dollars and require some installation, but for dead-zone homes they work.

Your carrier might also offer a femtocell — a small device that creates a mini cell tower using your home internet connection. Some carriers provide these free if you call and complain about coverage enough times.