AT&T's HTC One X goes on sale today

The Android-based smartphone hits the market with a $199 price tag, a bright 4.7-inch screen, 4G LTE data speeds, and a powerful camera.

The HTC One X's 8MP camera settings are very comprehensive. Standard features such as face detection, auto smile capture, and panorama are here as well as continuous shooting, slow-motion capture, and an HDR mode. Sarah Tews/CNET

You first saw it over the winter as a Mobile World Congress unveiling, but until now, you couldn't get your hands on it in the U.S.

That changes today, as the HTC One X smartphone goes on sale via AT&T. It's the flagship device in the new "HTC One" family, which also includes the One S.

In his CNET review of $199.99 HTC One X, Brian Bennett found much to like in the Android phone -- it's the Android 4.0 version, aka Ice Cream Sandwich -- including a bright 4.7-inch screen, 4G LTE data speeds, and a powerful camera. But the One X, which is crafted from a single piece of polycarbonate plastic, doesn't make the leap to quad-core processing.

The HTC One X will have to contend with the allure of other heat-of-the-moment smartphones including the just unveiled Samsung Galaxy S III, the well-established Apple iPhone 4S, and the potential of what might (or might not) arrive soon enough in an iPhone 5.

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