For some time now, Samsung has been the dominant player in the Android space, especially at the high end of the market. From the Galaxy S2 onwards, Samsung has been able to ride the wave of the smartphone industry’s growth without much disruption. Samsung has also shown a pretty impressive ability to adapt to changes in the market as seen by their dramatic departure in materials from the Galaxy S5 generation to the Galaxy S6 generation. While the Galaxy S6 was ultimately one of the best phones you could get that year, at least a few design decisions like the loss of removable battery and microSD slot were generally considered to be a step back relative to previous devices.

Throughout their reign of dominance Samsung has always been able to stay on top, however their competition is never too far behind. To that end, it’s probably obvious now that the Galaxy S7 family represents an attempt to improve on the Galaxy S6’s perceived faults, while building upon its perceived strengths. In order to start discussing these changes, we can start by looking at the basic specs and design of the Galaxy S7 and S7 edge.

Samsung Galaxy S Family
  Samsung Galaxy S7 Samsung Galaxy S7 edge Samsung Galaxy S6 Samsung Galaxy S6 edge
SoC Snapdragon 820 (US, China, Japan)
2x Kryo @ 2.15GHz
2x Kryo @ 1.6GHz
Adreno 530

Exynos 8890 (Rest of World)
4x A53 @ 1.58GHz
4x Exynos M1 @ 2.28-2.60GHz
Mali T880MP12 @ 650MHz
Exynos 7420
4x Cortex-A57 @ 2.1GHz
4x Cortex-A53 @ 1.5GHz
Mali T760MP8
RAM 4GB LPDDR4-3600 3GB LPDDR4-3100
+ microSD
32/64/128GB NAND (UFS)
Display 5.1” 1440p
5.5" 1440p
Dual Edge
5.1” 1440p
5.1” 1440p
Dual Edge
Network S820: Qualcomm X12 Integrated
2G / 3G / 4G LTE (Category 12/13)
2G / 3G / 4G LTE (Category 6)
Dimensions 142.4 x 69.6 x 7.9 mm, 152 grams 150.9 x 72.6 x 7.7 mm, 157 grams 143.4 x 70.5 x 6.8mm max, 138 grams 142.1 x 70.1 x 7.0mm max, 132 grams
Camera Rear Camera w/OIS
12MP (4032 x 3024)
Sony IMX260
f/1.7, object tracking AF
Rear Camera w/OIS
16MP (5132 x 2988)
Sony IMX240 / Samsung S5K2P2
f/1.9, object tracking AF
Front Facing
5MP, f/1.7
Front Facing
5MP , f/1.9
Battery 3000mAh (11.55 WHr) 3600mAh (13.86 WHr) 2550 mAh (9.81 WHr) 2600 mAh (10.01 WHr)
Launch OS Android 6 w/TouchWiz Android 5 w/TouchWiz
Connectivity 802.11a/b/g/n/ac 2x2 MU-MIMO +
BT 4.2,
2x2 802.11a/b/g/n/ac +
BT 4.1 (BCM4358),
Wireless Charging Yes, Fast Charging WPC 1.1 (4.6W) &
PMA 1.0 (4.2W)
Fingerprint Sensor Touch Touch
SIM Size NanoSIM NanoSIM
Launch Price
(No Contract)
$650+ USD $750+ USD $650+ USD

$750+ USD

One of the other major changes in terms of design this time around is electing to go with a significantly larger battery than before. Compared to most other aspects of smartphone technology, battery technology is a more mature field and improves as a slower pace, so the tradeoffs made here result in a thicker device and increased weight relative to the Galaxy S6. However, as we’ll soon see Samsung has made a number of changes in the industrial design which help to mitigate these issues.

Meanwhile, with the Galaxy S7 generation, Samsung has further blurred the line between the Galaxy S lineup and the Galaxy note. The Galaxy S7 edge is a 5.5-inch device - fully into the phablet territory - and only 0.2 inches smaller than the 5.7" Galaxy Note5. This means that the two Galaxy S7 phones are now more significantly differentiated than with the Galaxy S6 generation, where the difference amounted to the dual-edge display and a slightly larger battery. Now the Galaxy S7 edge is larger, ever so slightly heavier, and contains a battery with 20% more capacity than it's base Galaxy S7 brethren.

The final change of note in the Galaxy S7/S7 edge is the camera. With the Galaxy S6 review it was hard to avoid wondering why Samsung didn’t bother to integrate a camera with larger pixel size to improve low light performance, especially when camera was such a significant part of the Galaxy S6 design story with the noticeable camera hump. For the Galaxy S7, Samsung has gone ahead and done just this: the pixel size is now 1.4 micron which should significantly increase the number of situations where the image quality is limited by shot noise rather than image sensor noise. And to top things off the camera hump has now been almost entirely eliminated.

On a quick housekeeping note before we dive in, as we've had less than a week to look at the Galaxy S7, we're dividing up our review into two parts. Today we'll focus on the basics: performance, battery life, design, and the display. Part 2 will go deeper, looking into the Snapdragon 820 SoC in fuller detail, and coupling that with Wi-Fi performance, camera performance, and more.


Now that we’ve gone over the high level changes of the Galaxy S7 and S7 edge, we can start talking about the design of the device. While the Galaxy S6 was an enormous departure from what we were used to seeing from Samsung, the Galaxy S7 is really more an evolution of the Galaxy S6 design. As previously mentioned, it is noticeably thicker and heavier than the Galaxy S6. However, to offset this increase in thickness Samsung has integrated the curved 3D glass of the Galaxy Note5 into the design of the Galaxy S7.

The result of this change is that the Galaxy S7 arguably feels much better in the hand than the Galaxy S6. While I didn’t really have huge issues with the ergonomics of the Galaxy S6, it definitely felt a bit blocky relative to something like the Xiaomi Mi Note Pro and didn’t quite fit in the hand as nicely. The weight increase is noticeable, but not really the end of the world.

The thickness does result in a noticeably reduced camera hump, but on a personal level I never really cared about the camera hump in the Galaxy S6, so I’m not sure I care about the reduction in the camera hump here. I would actually argue that a camera hump is preferable to a camera cover lens that is perfectly coplanar to the back of the phone, as it means that the camera lens isn’t contacting whatever surface I’ve set it down on. While sapphire cover lenses go a very long way to eliminating the potential for scratching a cover lens, there’s also the potential for oil to smear on the camera’s cover lens so I would actually prefer having a camera hump.

The other noticeable change here is the re-introduction of 2.5D curved glass on the edges of the display. I’m not quite sure why Samsung tends to remove and re-introduce this design element seemingly on and off, but it does help with improving the feel of edge swipes at the cost of complicating some things like screen protectors and glass lens durability. Honestly speaking, I’m not sure how much of a difference it makes either way, but it does remove another edge present in the design.

Other than these changes, the design is almost unchanged. The power button remains on the right side of the device and is well-positioned ergonomically. The volume buttons are pretty much in the same place on the left side as well. The 3.5mm jack, micro-USB port, and single speaker are all on the bottom of the device. The only notable deletion in terms of design elements here would be the loss of the IR port on top of the device, which was removed from Galaxy devices starting with the Note5.

Battery Life
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  • TheinsanegamerN - Wednesday, March 9, 2016 - link

    It will let us know if throttling is a big issue. Benchmarks are just that, tests to see how well the phone does.

    Of course we dont run benches all day, but if you do not run benches, then how do you know how well the phone does when pushed, in say, a mobile game like asphalt 8 for more than 5 minutes? It's useful information to have.
  • tuxRoller - Saturday, March 12, 2016 - link

    Well then, according to that measure, throttling is a big issue with the iPhone 6s.
    How do you tell how well it works with asphalt 8? I'd probably pay asphalt 8 for awhile.
    These benchmarks aren't a good proxy as they are designed to push the devices to their limits.
  • tuxRoller - Tuesday, March 8, 2016 - link

    Also, XDA ran some graphics tests continuously if you're interested.
    All of the phones throttled, save the note 5.
  • frenchy_2001 - Tuesday, March 8, 2016 - link

    here is the xda article:

    Note that the note5 did not throttle in GPU test, but its final run was still only 60% of the throttled S7 score (and about 50% of the starting score).
  • tuxRoller - Tuesday, March 8, 2016 - link

    I just mentioned that it didn't throttle since jjj seems to be an exynos fan, so I was trying to forestall "BUT THE EXYNOS DIDN'T THROTTLE", even though it had lower results throughout.
  • gijames1225 - Tuesday, March 8, 2016 - link

    Great write up. Glad to see the Snapdragon 820 is properly flagship level. I look forward to the rest of the review, details on throttling, and hopefully at some point a look at Samsungs new Exynos SoC in the other s7 model.
  • Drumsticks - Tuesday, March 8, 2016 - link

    It's kind of interesting that Apple has a solid win in CU performance against Qualcomm, but a loss in GPU, even though they get their GPU from a company who should specialize in them. Twister truly is an astounding architecture, but they're probably at the end of the easy, huge performance boosts. It may be interesting to see how well Apple can go about completely redesigning their core when it happens.
  • name99 - Tuesday, March 8, 2016 - link

    Faster GPU is not as interesting as faster CPU because it's trivial to make a faster GPU --- just throw more GPU "cores" at the problem. If Apple wanted to double the GPU performance of the A9 tomorrow, all they have to do is use 12 GT7000 cores instead of their current 6.
    So the decision as to how many to use is an economic/use case decision, not a technical one. Given the pixels Apple is interested in driving, it looks like they used the right number of cores. QC sells into a broader market (and, in particular, a market that, whether or not it makes sense, uses crazy-high pixel densities) so their incentives align with throwing in more cores.

    If you want to run a technically interesting GPU performance competition between Apple and Adreno (or Mali, or anyone else), raw performance is not the interesting metric. The interesting metrics are
    - performance/watt
    - performance/mm^2
    I don't know who would win either of these, but my guess is Apple. We don't yet have enough information to answer the first question, but the mutterings about GPU throttling in the comments suggest that QC gets hig GPU numbers by burning lotsa power, not by having some super-advanced GPU that's a cleverer design than anyone else. In a sense, what you're seeing is what Apple could copy if they wanted by putting the A9X inside the iPhone6S.
  • lilmoe - Tuesday, March 8, 2016 - link

    " The interesting metrics are
    - performance/watt
    - performance/mm^2"

    Nah, the really interesting metric would be how much power consumes to run (and sustain) the average game at 60FPS at the same resolution. Read: efficiency.
  • sor - Tuesday, March 8, 2016 - link

    Efficiency... So performance/watt.

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