A couple washes a sunshine yellow Ford Pinto Runabout in a 1974 Ford ad. | Getty Images There’s a funny game I’ve been playing with my three-year-old iPhone lately. The objective is to drain my battery as often as possible to degrade its health enough that Apple Care covers the replacement. A new battery would make my phone feel brand new — or at least new enough to avoid buying the latest iPhone, which isn’t really any better than my old-timer.  I can’t play this game forever. In a few years, I expect Apple to stop supporting my model, as it has with countless other geriatric devices...