Original Link: http://www.loopinsight.com/2012/09/18/review-iphone-5/
Great overall review of the new iPhone by Jim Dalrymple:
I am able to easily navigate through the iPhone 5 menus and options using one hand. My thumb reaches the top of the screen to tap on options and hit the back button without shuffling the phone in my hand.
This is a mobile device, not a desktop computer. We want to operate an iPhone with one hand. This is a device that we use on the go, with a coffee in one hand and an iPhone in the other. We can send an email, visit a Web page or make a phone call.
We can also use the multitude of apps available, but the second you require two-hands, you take away functionality and convenience from the user. That is a design failure.