Conclusions and Final Thoughts

The HTC One X is quite simply the smartphone we wished Google had launched Ice Cream Sandwich. It has an amazing display, arguably the best balance of performance and power efficiency in an SoC and a truly outstanding design. In a sea of Android devices that mostly look the same, the HTC One X definitely stands out. It really is the best Android smartphone on the market today.

The industrial design and build quality are easily the best HTC has ever put forward. The One X feels incredibly solid and just looks great. The slight curve to the front surface lets you glide your finger smoothly over the display without hitting an abrupt edge as you approach the end of the device. The back of the One X is distinctly HTC, but obviously more modern. Of anything that has launched thus far, it's probably our favorite looking Android smartphone.

The conclusion for all of HTC's One series reads pretty much the same - HTC has done an extraordinary job both creating its next generation of devices (the One S and One X specifically) and identifying the importance of a concise, unified message. Getting behind either a single device or series and being consistent about it is quite honestly the only way to do battle with the Samsungs and Apples of the world, both of which get this concept and have practiced it for a while now. Unified camera experience, software experience, industrial design, and accessories will make or break this next iteration for the rest of the handset makers. We're still working on finishing our review of the other HTC Ones (One S International, One X International, One S T-Mobile) but my thoughts remain the same for the One X International with Tegra 3 and the other One Ses with Krait - these are without question the best phones HTC has ever made purely because the experience of everything else is kept continuous across the board. 

Thankfully the praise doesn't stop with aesthetics. Internally HTC has put together the best hardware available on the market today. The 720p Infinity Screen has the best contrast ratio of any smartphone we've tested, and is among the brightest we've used as well. There's no PenTile to worry about, it's simply one of the best displays if not the best we've reviewed in a phone.

The Qualcomm Snapdragon S4 (MSM8960, "Krait") SoC is easily the fastest or among the fastest on the market today. Android feels very smooth and snappy on the AT&T One X. Applications load quickly, as do web pages. Although the GPU isn't all that new, GPU performance is still quite good. The big draw however is the power efficiency of the hardware platform. In many cases the AT&T One X delivers either the best or among the best battery life of any smartphone we've tested.

For those of you wondering about the Snapdragon S4 vs. Tegra 3 comparison, the answer is pretty simple. It's very difficult to tell the performance difference between these two SoCs in day to day usage. Qualcomm has the scalar performance advantage, while NVIDIA has the heavily threaded performance advantage. On the GPU side, there's likely an NVIDIA advantage there as well. However in practice, you'd be hard pressed to tell the international (Tegra 3) One X and AT&T (S4) One X apart based on performance. Battery life however is a different story entirely. Today, the AT&T One X offers tangibly better battery life than the international version. There are software updates on the way for the One X (Tegra 3) that may narrow the gap, but we'll have to wait and see.

Then there's the camera. Once again, HTC is able to deliver one of the best if not the best smartphone camera with the One X. Low light performance in particularly impressive. The new Sense camera UI is a great match for the hardware as well. The ability to take photos while recording a video without a costly mode switch is both innovative and incredibly useful.

For months we've been recommending waiting for the first 28nm based smartphones before making a purchase. Our biggest fear was that the first 28nm LTE products would show up and be unimpressive, prolonging the wait. Thankfully HTC has put our worries to rest. The One X is an amazing first productization of Qualcomm's Snapdragon S4. It's absolutely everything we wanted. Furthermore, unlike phones released over the past 6 months, you aren't buying into an aging platform. There will be further revisions on Qualcomm's 28nm silicon, and a bunch of exciting stuff coming out early next year, but the One X's hardware won't be immediately obsolete.

If you've been waiting to buy a high-end Android smartphone, the One X is really the only one to get on AT&T.

Cellular, WiFi, GNSS, Speakerphone and Call Quality
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  • snoozemode - Tuesday, May 1, 2012 - link

    The RGBW in the Atrix is still bad though except for battery performance which is better because of more light coming through.
  • snoozemode - Tuesday, May 1, 2012 - link

    Would be interesting to see battery performance on gps usage, especially on the 8260A and 8960let where the gps is 28nmthat on-die.
  • OCedHrt - Tuesday, May 1, 2012 - link

    Does the best wifi performance not affect battery life? I noticed the One X does have worse battery life on wifi.
  • sprockkets - Tuesday, May 1, 2012 - link

    I don't know but with it checked on an HTC sensation the battery never charged up and that was on the 1amp charger with the phone. Weird. (this was done on the latest Android Revolution firmware for ICS on the sensation.)
  • OCedHrt - Tuesday, May 1, 2012 - link

    Don't they have the same processor w/o the LTE baseband?
  • 3DoubleD - Tuesday, May 1, 2012 - link

    I know this is less important that the other battery life tests you've done, but it would be interesting if you could include some sort of idle power drain test. For one, it would be interesting to see how the Tegra 3 would compare to the S4 here, since the Tegra 3 has the low power companion core for idle tasks.

    Also, you included a color accuracy chart it your iPad3 review, could that be added to the display reviews. It's much easier to interpret than looking at the CIE diagram.

    Thanks for the great review... I'm pretty tempted to buy a white One X after this. I've been impatiently waiting and refreshing Anandtech for weeks now for this review!
  • NeoteriX - Wednesday, May 2, 2012 - link

    The 40nm LP process used for the companion core may be a bit of a gimmick compared to the next generation smaller process fabs. In other words, it's clear that the 40nm LP process cuts down on consumption compared to the 40nm general process (so, compared with the Tegra 2 which is two cores at 40nm general process, there is battery savings).

    However, it could very well be (and is likely) that even the 40nm LP process cannot compete with the 28nm fabrication process used in the Snapdragon S4.

    It would be interesting to see, but my bet would be that the S4 wins even on idle.
  • fm123 - Thursday, May 3, 2012 - link

    The only thing similar is the phone talk time battery life. Since the Krait has an advantage of 3G/4G integration and die size, the talk function largely removes 3G/4G function from the test (which Tegra does not have integrated), and the talk function itself is not too intensive.
  • Stormkroe - Tuesday, May 1, 2012 - link

    I'd like to think that my incessant whining in the mobile forums are responsible for Exynos missing from the glbenchmark charts :) Broken scores, I tell ya!!!
    PLEASE, as a favor to us old 2011 phone owners, re-review phones like the Sensation and Galaxy S2 now that they've gotten ICS.
  • RamarC - Tuesday, May 1, 2012 - link

    battery life vs capacity is useless if the end user can't replace/expand the battery. it doesn't matter if phone A lasts 7 hours with a smaller battery but phone B lasts 9 hours with a bigger battery. if both batteries are fixed, phone B lasts longer, period. now maybe an overall comparison of phone A vs B with all benchies summarized would be good, but even then cost on the same carrier would need to be considered .

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