Picture this: You’re on a long road trip, far from home, windows down, music turned up, when suddenly your phone buzzers ominously with a 5% battery warning. Ugh, the dreaded low-battery signal. Usually, this would not be a big deal, but you’re in the middle of nowhere, the gas tank is barely above "E," and you need directions—and probably a quick call to roadside assistance while you’re at it. It’s in moments like these when you realize just how integral your phone is to your sense of security.