It’s entirely likely that a modern geek would bring an emergency mobile phone on a camping trip, but forget matches or a lighter. If there’s some steel wool handy, that cellphone’s battery can start a fire.
Gizmodo suggests that other batteries with exposed, close-proximity connectors, like a nine volt, can pull off the same trick, as seen on Survivorman. It wouldn’t seem to seriously damage your battery, as you’re just trying to grab a spark or two off a temporary short circuit to drop onto kindling, but don’t plan on making this a standard outdoor practice. Still, for showing off or saving the day at an outdoor excursion, it’s hard to beat calling forth fire from your Samsung’s circuits.