ASUS last week introduced Pegasus 4S, the company’s first smartphone with full-screen 18:9 display in China. It has a 5.7-inch HD+ 18:9 full-screen display, offering 12.5% more area, comes with a 16-megapixel rear camera with LED flash along with a secondary 8-megapixel rear camera offering portrait mode and packs a huge 4130mAh battery.