We noticed that Samsung's planned Game Pad accessory has an expanding clamp designed to accommodate screen sizes larger than the 5-inch Galaxy S 4 being used as its showcase, but it wasn't clear just how far it would go. Now that there's an official accessory page on the GS4's microsite, Samsung is unusually specific about the limit: 6.3 inches. That's an odd choice of display dimension, as it's bigger than the 5.5-inch
