Chinese vendor Huawei has unveiled what it claims is the world’s thinnest smartphone at CES 2012  in Las Vegas this week. The Huawei Ascend P1 S is just 6.68mm thick and has a 1.5GHz dual-core processor, a 4.3 inch AMOLED touchscreen and runs on the Android 4.0 Ice Cream Sandwich OS. The company also launched the slightly thicker Ascend P1, which is 7.69mm thick.