AT&T has confirmed the launch of the nation’s thinnest 4G smartphone, the Samsung Galaxy S2, on its network in the United States for today, at a price at $199.9 for a two-year agreement, according to Engadget news. An earlier variant of the Galaxy S2, the Galaxy S2 Epic 4G Touch was launched last month, on Sprint Nextel's network.

The Galaxy S2 is, according to Samsung, the fastest-selling Smartphone.

The Android-based S2 has reportedly already crossed sales of over 10 million units, in the six months of its retailing.

In a report on popherald.com, the smartphone variant to be available on AT&T's network is to be different from that available on Sprint Nextel's network, primarily because it will retain original features like a 4.3-inch screen, no LED light notification, a 1.2GHz dual-core Exynos processor and Android Gingerbread 2.3.4 out of the box with the TouchWiz user interface. One of the more attratcive features, of the Galaxy S2, however, could be its 4.3-inch Super AMOLED Plus touch screen display, which has 50 percent more sub-pixels than the previous phones.

The ultra-slim 4G smartphone measures only 0.35 inch (8.89mm) deep and features an 8 megapixel camera capable of Full HD video recording that can be saved in the 16GB internal storage capacity.