I have had the One X for AT&T for about 4 days now and it has been a great experience. The design is beautiful, the display is better than any I've seen, and the raw speed is astounding. There is not much to complain about when it comes to the One X, but that does not make it perfect. The minor flaws that I have found are that the device tends to heat after even moderate use quite a bit, the battery is far from flawless, it lasts me about a 15 hr time period, and many apps (Modern Combat 3) do not function on this device. On AT&T's side which unfortunately negatively effects the phone is the areas in which it has LTE. Though there are some flaws this is close to the perfect android phone and in my opinion the best android phone currently on the market.