LG Optimus consist of advanced features and user friendly know its functions. It has a simple and brilliant Android operating system. But The LG Optimus s is a latest model of LG It has many advance features and function than LG Optimus. Its body is 114 x 59 x 13 mm, 320 x 480 pixels, 3.2 inches (~180 per pixel density), MicroSD, up to 32GB, 3.15 MP, 2048x1536 pixels camera. I think you should buy LG Optimus s.