Is there a limit on how big your smartphone can be before it can be called a tablet? Looks like LG trying to find out. It just dropped this teaser vid for its upcoming Optimus Vu—a five-inch, 4:3 ratio, Android-powered behemoth. Why a 4:3 aspect ratio? The company suggests that this size will fit more comfortably in users' hands. [LG Blog via The Verge]