Sony Ericsson now is preparing to market their two computers tablet pc called S1 and S2. One of the primary market to be targeted by the giant Japanese electronics is USA, they want to penetrate the market center of Apple. Telecom operator AT & T will become the exclusive sales partner S2 tablet pc. This tablet pc has a unique shape with two touch screen measuring 5.5 inches each. And it will support 4G networks by AT & T.