Humongous smartphones. Phablets. Call them what you will, it's evident that the trend of ultralarge phone displays over 5 inches is here to stay, at least for now. Newcomers HTC, with its 5.9-inch HTC One Max and 6-inch Nokia Lumia 1520 join veterans like Samsung's Galaxy Note line, and others. Check out these phones with screen sizes that top 5 inches.