Hell, I would add that you shouldn't do it on an iPhone 4. Thankfully, my wife's iPhone 4S is about as fast as it was when she got it, because she hasn't done

Hell, I would add that you shouldn't do it on an iPhone 4. Thankfully, my wife's iPhone 4S is about as fast as it was when she got it, because she hasn't done any OS upgrades on it at all.