Cell phone reception is a fickle beast. One moment you're gabbing over a five-bar signal so crisp that not a hiss, crackle, or pop can be heard. Then, as soon as you step indoors, you're the prisoner of an area with reception so weak you'd be giddy to maintain a single bar. Unfortunately, this scenario is commonplace, especially when it comes to using mobiles within the home. The good news is that certain new devices promise to make cellular dead zones a thing of the past, whether it's via antennas, Bluetooth, or Wi-Fi. So stop hanging out of that window to get a signal.