For just over a week, I’ve been using two phones interchangeably. The first is the Lava Xolo X900 with Medfield inside, the second is the flagship of HTC’s new One series, the HTC One X on AT&T. It’s a device with lofty goals, as it’s the flagship of HTC’s new branding and strategic positioning behind a single line of devices, industrial design, and focus. The strategy mirrors that of Samsung’s with their Galaxy series, and if successful will rekindle the excitement behind HTC’s brand.

The One X on AT&T is really a One XL (L for LTE), however in the USA the device carries full One X branding. We’ve got the International One X and One S variants which will be reviewed in short order, but for today we’re talking specifically about the One X on AT&T.

The One X is without doubt unlike any other HTC smartphone I’ve held to date. In fact, it’s a testament to how revised HTC’s industrial design is that I can even write that sentence. The phone is machined, not injection molded, from a single machined piece of polycarbonate plastic, and feels anything but cheap in the palm. If Nokia was really the first to demonstrate that you can have a polymer (read: plastic) device without making it feel second rate, HTC is the second OEM to do it properly. Probably the biggest part of that effort is giving the surface a proper texture. In this case the HTC One X backside is given a sand blasting for texture, while the sides remain slick with a piano finish gloss. It’s a great juxtaposition of textures that makes it easy to identify proper grip, and likewise break any homogenaity.

The buttons blend into the glossy sides of the One X, getting pretty close to the optimal combination of protrusion and clickiness. The power/standby button at top is no exception. Speaking of the top, there’s a secondary microphone for noise cancelation, headset jack, and finally the microSIM tray, which requires an ejector tool (provided in the box) like many other newer designs.

The case is again a single piece unibody construction. With exception of the microSIM tray, there are virtually no doors or covers, and the consequence is no flex, creaking, or chattering seams when the vibration motor is going. The speakerphone grille at the back and the earpiece at front are both arrays of pinholes no doubt cut with a laser through the polycarbonate. On the front, the notification LED (which shines green or amber) shines through one of the small holes. The only unfortunate part of this is that it’s hard to see the notification LED from extreme angles. At far right is the 1.3 MP front facing camera.

HTC has opted to place the microUSB port about one quarter of the way down on the left side of the phone. The result is that it’s possible to hold the device in portrait and type like normal without the cable poking into your hand. I also suspect that HTC has placed the majority of the PCB up top, and left the bottom three quarters of the device for the internal battery.

The rear of the device is again a softly textured finish. Our HTC One X is a dark, almost black color, but there’s also a white version as well. The white revision indubitably hides scuffing better than our black unit, though so far loss of texture at the contact points on the One X has been minimal. The surface roughness from HTC's bead/sand blasting is very high frequency, which is what makes it somewhat prone to appearing shiny after rubbing on planar surfaces. Interestingly enough I noticed that Nokia moved to a lower frequency surface texture on the Lumia 900 to combat this. I'm sure we'll eventually see HTC do something similar eventually. That said again the scuffing is minor.

There are five pogo pads at right for using a dock or accessory. I’m not sure whether the HTC Car Kit uses these pogo pins, but we’ve seen HTC and other OEMs use these for audio, power, and USB data signaling before. The camera module bulges out gently from the top center with a single LED flash at right.

The obvious mainstay of the One X is the 4.7" 720p infinity display which has a gentle curve at the left and right edges. The display isn’t curved, however the overall design makes it almost feel that way. Up top, HTC has done an excellent job hiding the ambient light and proximity sensor. I can spot the ambient light sensor, but it’s subtle, and I have no idea where the proximity sensor is, which is awesome. At bottom are the three capacitive buttons, which means the menu button becomes part of the UI for legacy applications that haven’t fully integrated it yet. I have no complaints with the capacitive buttons, this is something that has long since been completely settled and squared away. They’re backlit as well if the ambient brightness level is low enough. The result is even more vertical real estate than the Galaxy Nexus’ 720p display provides.

Overall I can’t understate how great the One X feels as a whole. It’s a new type of minimalism for the handset maker - mature, less chintzy and flashy like so many other Android devices. My only gripe is that the black color shows scuffs and loss of texture (from rubbing other solid surfaces at the contact points) more than I’d like - the white model probably makes more sense purely because I can’t imagine that showing.

What’s really interesting to me is just how many recent handsets from so many other OEMs have taken a similar design approach - microSIM, unibody polymer construction, no microSD card slot, and non removable battery. That combination of features seems necessary if you’re going to craft a device with competitive form factor this generation, and no doubt even more vendors will update with that profile. Polymer makes sense because it’s both a material transparent to RF, and easy to machine, and going with a microSIM makes sense since it’s all about minimizing area that isn’t dedicated to battery.

Next up is our specifications table. Again the chief differentiator between AT&T’s One XL turned One X is that the device has a Qualcomm Snapdragon S4 MSM8960 SoC, this is the first 28nm dual core Krait based part, and marks our first smartphone with it inside. The two krait cores are clocked at up to 1.5 GHz, and MSM8960 includes Adreno 225 graphics. The AT&T One X also includes 16 GB of onboard storage, and again there’s no microSD card expansion option.

Physical Comparison
  Apple iPhone 4S Samsung Galaxy S 2 Samsung Galaxy Nexus (GSM/UMTS) HTC One X (AT&T)
Height 115.2 mm (4.5") 125.3 mm (4.93") 135.5 mm (5.33") 134.8 mm (5.31")
Width 58.6 mm (2.31") 66.1 mm (2.60") 67.94 mm (2.67) 69.9 mm (2.75")
Depth 9.3 mm ( 0.37") 8.49 mm (0.33") 8.94 mm (0.35") 8.9 mm (0.35")
Weight 140 g (4.9 oz) 115 g (4.06 oz) 135 g (4.8 oz) 129 g (4.6 oz)
CPU Apple A5 @ ~800MHz Dual Core Cortex A9 1.2 GHz Exynos 4210 Dual Core Cortex A9 1.2 GHz Dual Core Cortex-A9 OMAP 4460 1.5 GHz Dual Core Qualcomm Snapdragon MSM8960
GPU PowerVR SGX 543MP2 ARM Mali-400 PowerVR SGX 540 @ 304 MHz Adreno 225
RAM 512MB LPDDR2-800 1 GB LPDDR2 1 GB LPDDR2 1 GB LPDDR2
NAND 16GB, 32GB or 64GB integrated 16 GB NAND with up to 32 GB microSD 16 GB NAND 16 GB NAND
Camera 8 MP with LED Flash, Front Facing Camera 8 MP AF/LED flash, 2 MP front facing 5 MP with AF/LED Flash, 1.3 MP front facing 8 MP with AF/LED Flash, 1.3 MP front facing
Screen 3.5" 640 x 960 LED backlit LCD 4.27" 800 x 480 SAMOLED+ 4.65" 1280x720 SAMOLED HD 4.7" 1280 x 720 LCD-TFT
Battery Internal 5.3 Whr Removable 6.11 Whr Removable 6.48 Whr Internal 6.66 Whr

To be totally honest, I always found the Sensation’s industrial design to be world class, it was a few other devices with carrier influence that showed definite drift away from HTC’s unique vision. Keeping that from happening with the One series should be the next big concern for HTC.

Software - ICS with Sense 4
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  • antef - Friday, May 04, 2012 - link

    Oh, interesting, thanks for clearing that up! Reply
  • 1ceTr0n - Wednesday, May 02, 2012 - link

    But i'll stick with my new white and sexy Galaxy Note Reply
  • akyp - Wednesday, May 02, 2012 - link

    "What’s really interesting to me is just how many recent handsets from so many other OEMs have taken a similar design approach - microSIM, unibody polymer construction, no microSD card slot, and non removable battery. That combination of features seems necessary if you’re going to craft a device with competitive form factor this generation, and no doubt even more vendors will update with that profile. Polymer makes sense because it’s both a material transparent to RF, and easy to machine, and going with a microSIM makes sense since it’s all about minimizing area that isn’t dedicated to battery."

    I strongly disagree with this trend and I think this is right up there with glossy 768p notebook displays in terms of absurdity and simply got to stop. It's not about making the device slim nor maximizing battery, as the One X stands out in neither. It's all about cutting cost and forcing users to upgrade devices sooner because the battery has gone bad and cannot be replaced easily, or the internal storage has run out and there's no way to expand it with a microSD. MicroSIM is an abomination created by Apple just because they can.
    Reply
  • xype - Wednesday, May 02, 2012 - link

    "The One X on AT&T is really a One XL (L for LTE), however in the USA the device carries full One X branding. We’ve got the International One X and One S variants which will be reviewed in short order, but for today we’re talking specifically about the One X on AT&T."

    Every time someone will tell me that Android branding is NOT confusing I will point them to this paragraph. Damn, you’d think the people at HTC are all retarded or something.
    Reply
  • Sabresiberian - Wednesday, May 02, 2012 - link

    I've never owned a smart phone so maybe it's not the problem it is on monitors for desktop and portable computers, but I'm concerned about these screens getting narrower. I'd like to see that trend change, I think. In this, Apple looks to me like it's doing a better job.

    ;)
    Reply
  • Impulses - Wednesday, May 02, 2012 - link

    This screen is actually ever so slightly wider than last gen 4.3" qHD displays... Tho those were slightly narrower than the first 4.3" displays, so it's kind of a wash really. The iPhone's display is just smaller in every direction, I don't see how that's an improvement unless you have tiny hands or shallow pockets... If that's the case there's always the One S, it's barely any wider than the iphone, about half an inch longer, but it packs in a 4" display (shame it's Pentile qHD tho (. Reply
  • jefffeely - Wednesday, May 02, 2012 - link

    "The rear facing CMOS is a Samsung S5K3H2YX which Vivek spotted in the MyTouch 4G Slide. "

    The Rezound has the same camera module as well.

    I would love to see a camera comparison between the One X and another phone with the same module so as to see how much of a difference the dedicated ISP makes. Oh darn, guess I'll just have to go buy an One X now.

    As a side note: thank you so much for doing this review. It is nice to be able to find something unbiased in the sea of hype.
    Reply
  • quiksilvr - Wednesday, May 02, 2012 - link

    In the Camera Section for iPhone 4S, it says:

    8 MP with LED Flash, Front Facing Camera

    But that is not correct. It SHOULD say:

    8 MP AF/LED Flash, VGA Front Facing Camera
    Reply
  • ssj3gohan - Wednesday, May 02, 2012 - link

    The decibel scale being logarithmic, it's pretty much useless to graph it linearly. You get the false impression that for instance something that has a 77dB loudness is 'just' 5% less loud than something at 80dB, while in fact it's a 100% difference.

    The loudness graphs would be much more informative if they would convey these actual differences. There are big, big differences between speaker loudness of phones and it is a legitimate point of review.
    Reply
  • skiboysteve - Wednesday, May 02, 2012 - link

    I agree in principle, but 3dB is not twice as loud. 5-10 dB is.

    I actually thought 3dB was twice as loud for a long time but someone finally showed me I was wrong. Google it :)
    Reply

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