I got a new iPhone 5S yesterday, upgrading from an iPhone 4 and, I really like it. I've only charged it once, and it has an otterbox on it, so it's hard to remove, and I can't tell if it gets hot when it's charging. I was wondering if I should check the temperature of it to see if its hot while charging, or does that really matter? Maybe I'm overanalyzing? I don't want it to overheat or anything like that. To clarify, I can't check the temperature due to my otterbox in the way, but was wondering if I should even pay attention to it? If it got too hot, could I feel through the case?