HTC One X (AT&T) NOT READY FOR PRIME TIME
Hardware
Unlock/on/off button on top. Side would be quicker one-hand access.
Volume toggle button on side too easy to accidentally push.
Pick up phone from the top even with skinny, "no-flab" hands causes home screen to flip to Widget screen. The design is great but the glass right on the edge is too touchy regardless of settings.
Left "back" haptic button non-responsive every 2 out of 3 times. However, it does respond to the edge. These two issues make me think that the hardware design needs work.
Pulldown menu non-responsive almost every time unless there are notifications.
If you hold the phone in your hand so that your little finger is on the left-bottom side of the phone, it will cover the radio and you will lose both OTA and Wi-Fi signals.
Easy to scuff the back.
Notification light blinks and then stops without touching the phone.
Install "No Lock" immediately because the unlock ring is stupid as long as I have to also push the button on top. It is an unnatural movement for your hand to go from the top to the bottom and you only need a software lock when you already have a hardware lock if you are in an un-secure location.
Software, change to stock keyboard immediately but some native apps still will not provide landscape keyboard.
Notes App sux big time and is useless in every sense of the word.
Contacts app is pretty bad too.
Google Navigation GPS is outstanding and extremely accurate. Stay away from AT&T's as it is not even close.
Photos and videos are very good as are the panoramic and burst mode shooting, the later while capturing video. Outstanding!
I really liked the overall design and minimalist approach of this phone. The back made me feel, even though the phone is a bit larger than what I am use to, that I could easily hold on to it but the back is very easy to scuff and the scuff marks easily show on the dark grey back.The phone is very thin and light.
There is no HTC SYNC for MAC (regardless of what others would have you believe) and HTC SYNC MANAGER is "Available Soon" despite the fact the phone has been out for a few months. You can, however, just hook up the USB cable to copy all files and folders to your MAC or PC. The "Driver" accessory as well as the Media Link HD (supposedly in the International version box) are both out of stock.
Carrier
AT&T has very limited LTE and despite living in the Phoenix Metro, there is no LTE in the SE Valley. I was willing to download apps to make the keyboard, Notes, etc. work but without LTE I cannot use this for tethering to my MACBook Pro. The HSPDA+ signal is just too poor. I used AT&T's Mark the Spot to report it. I signed up for the 5GB data plan in hopes of finally dumping COX internet for which I pay $54. Not yet, I guess. BTW, I checked out the Downtown LTE and it is fast but I hardly used it and when I got home the battery was down another 30%.
They really should have given this more User Acceptance Testing and held on to it a few more months.
Was going to go with Verizon for the S3 but now, I just don't know.