"Very rare." A little exaggerated, don't you think? Anyone older than 26 y.o. uses it with one hand.
Really? My point is that although you can use the iPhone with one hand, it is more comfortable to type using two. There are few situations where I would imagine you would only have one hand free to use the phone, and it's not like other phones such as the galaxy s3 are impossible to use in these situations. So like I said, to carry on arguing that one handed use is less and less valid. I mean apple invented multi touch didn't they? So the iPhone is designed to be used with two hands.