Here are the three phones side by side. From the left: the HTC Titan 4G, HTC HD7, and iPhone 4S. At almost 2cm taller and 1cm wider than the iPhone, the Titan really does look quite a bit bigger in the hand. This makes the most of the Windows Phone interface, which scrolls from top to bottom, unlike the iPhone which you swipe sideways on the screen to get to a new page of apps. It’s also obviously handy for viewing Web pages, photos, though arguably the best reason to get a phone of this size is if you watch movies on the bus, train or plane.