As recently as the Galaxy S5, Samsung had a fundamentally different strategy from companies like HTC and Apple. While design wasn’t ignored completely, Samsung Mobile had a different set of priorities. In general, it felt like Samsung wanted the phone to have every feature possible to please every possible potential customer. Features like a removable battery and microSD card slot seemed to be a crucial point of differentiation. TouchWiz focused on delivering a full suite of applications even if they were pretty much redundant when compared to Google’s applications. Samsung also seemed to cost-optimize their external shells, favoring polymer builds over glass or aluminum. Since the Galaxy S, this strategy paid off handsomely. With the help of strong marketing, Samsung proceeded to dominate the Android market from the days of the Galaxy S2, to the point that almost no other Android OEM was relevant in terms of market share.

However, Samsung’s tried and true strategy failed with the Galaxy S5. Fundamentally, Samsung had always been competing with Apple and their iPhone line-up at the high end, but Samsung consistently held a price advantage. The real problem was the rise of low-cost flagship phones, which squeezed Samsung significantly. Other OEMs were able to justify their high-end pricing by delivering a polished software experience and premium hardware design. In comparison to these relatively cheap phones which delivered largely the same experience and hardware, Samsung’s sales crumbled and the Galaxy S5 didn’t meet sales expectations.

This brings us to the Galaxy S6, which is supposed to be Samsung’s attempt at refocusing their product design and lineup. Design has become a major priority, and the Galaxy S6 is a radical departure from previous design in terms of almost every design choice. The Galaxy S6 represents the best that Samsung can make to some extent, as a great deal of the phone is composed of Samsung-made parts to achieve maximum vertical integration as seen in the specs below.

  Samsung Galaxy S5 Samsung Galaxy S6 Samsung Galaxy S6 Edge
SoC MSM8974ACv3 2.45 GHz Snapdragon 801 Exynos 7420 2.1/1.5GHz A57/A53 Exynos 7420 2.1/1.5GHz A57/A53
RAM 2GB LPDDR3 3GB LPDDR4-1552 3GB LPDDR4-1552
NAND 16/32GB NAND + microSD 32/64/128GB NAND 32/64/128GB NAND
Display 5.1” 1080p
SAMOLED HD
5.1” 1440p
SAMOLED
5.1” 1440p
SAMOLED, Dual Edge
Network 2G / 3G / 4G LTE (Qualcomm MDM9x25 UE Category 4 LTE) 2G / 3G / 4G LTE (Category 6 LTE) 2G / 3G / 4G LTE (Category 6 LTE)
Dimensions 142 x 72.5 x 8.1 mm, 145 grams 143.4 x 70.5 x 6.8mm max, 138 grams 142.1 x 70.1 x 7.0mm max, 132 grams
Camera 16MP (5132 x 2988) Rear Facing with 1.12 µm pixels, 1/2.6" CMOS size, 31 mm (35mm effective), f/2.2 16MP (5132 x 2988) Rear Facing w/ OIS, f/1.9, object tracking AF 16MP (5132 x 2988) Rear Facing w/ OIS, f/1.9, object tracking AF
2MP Front Facing 5MP Front Facing, f/1.9 5MP Front Facing, f/1.9
Battery 2800 mAh (10.78 Whr) 2550 mAh (9.81 Whr) 2600 mAh (10.01 Whr)
OS Android 4.4
w/TouchWiz
Android 5 (64-bit) w/TouchWiz Android 5 (64-bit) w/TouchWiz
Connectivity 802.11a/b/g/n/ac 2x2 +
BT 4.0 (BCM4354),
USB3.0, GPS/GNSS, MHL, DLNA, NFC
2x2 802.11a/b/g/n/ac +
BT 4.1 (BCM4358),
USB2.0, GPS/GNSS, NFC
2x2 802.11a/b/g/n/ac +
BT 4.1 (BCM4358),
USB2.0, GPS/GNSS, NFC
Wireless Charging N/A WPC 1.1 (4.6W) &
PMA 1.0 (4.2W)
WPC 1.1 (4.6W) &
PMA 1.0 (4.2W)
Fingerprint Sensor Swipe Touch Touch
SIM Size MicroSIM NanoSIM

NanoSIM

Design

There’s a lot of ground to cover in the Galaxy S6 and S6 edge, but probably the most immediate change is to the design. The Galaxy S6 is a unibody design, with no apparent screws. This does mean that there’s no removable battery or microSD slot, which shouldn’t be a problem for most people although this may be enough for some to write off this phone completely.

The back cover is now glass instead of plastic, and is attached to the phone with glue instead of plastic latches. Regardless of color or model, Samsung has placed an extremely fine pattern beneath the glass that manages to be subtle but also surprisingly brilliant under direct light. It’s tasteful in a way that the Galaxy S5 and Note 4 weren’t. The back of the phone also has a single LED flash, a heart rate monitor, and the camera which bulges out significantly. I personally don’t have a problem with camera humps, but the Galaxy S6’s camera hump is probably the biggest I’ve seen in recent memory.

The glass back cover meets the metal frame of the phone, which provides most of the structural rigidity and strength. On the normal Galaxy S6, this frame has a very slight curve and is almost cylindrical along the top and bottom of the phone, but flattens out along the sides for better grip. The bottom of this frame has the speaker, microUSB port, and 3.5mm headphone jack, which does make for some resemblance with Apple products launched within the last year. At any rate, the placement of the speaker, USB port, and 3.5mm jack are all appropriate for a phone.

The left side of the frame contains the volume buttons, which are clicky and solid, although pressing the buttons off-center does produce a noticeable flex. The right side of the frame has the power button and the nanoSIM slot on the normal version.

On the edge variant, the sides of the frame are dramatically thinner and appear to be angled out when compared to the Galaxy S6. In the hand, this makes it feel much thinner than the S6, but it really feels almost too thin to hold comfortably. Combined with the flat back, it’s really a bit of a struggle to pick up the edge off of a table, which compromises usability when compared to the normal S6.

The top of the frame contains the IR LED for TV capabilities and a hole for a microphone. On the edge variant, the nanoSIM slot is relocated to the top of the phone.

The front of the phone is probably the only aspect of the design that feels relatively similar to the Galaxy S5. However, the texture of the bezel beneath the glass is similar to the subtle finish of the back cover, which makes for a unique visual effect that manages to be tasteful and quite unique. Other than this, we see the same layout as most Galaxy phones, with two capacitive buttons (multitasking on the left, back button on the right) and a physical home button. In the case of the Galaxy S6, this home button has been turned into a fingerprint scanner that is touch-based rather than a swipe sensor. Along the top of the front face, we also see the ambient light sensor, a proximity sensor, the earpiece, and the 5MP front-facing camera. Directly below these items is the display driver beneath the bezel, which is similar to the “logo bar” of the One M7, M8, and every other phone on the market today. On the S6 edge, the sides of the display are curved to reduce the width of the phone, which does make it easier to hold in the hand, but there’s really no bezel reduction here as the side bezels seem to be larger than what we see on the S6.

Overall, the design of the Galaxy S6 and S6 edge is really unlike anything else they’ve produced in recent memory. The phone itself is well-sized and feels much more ergonomic than the Galaxy S5 due to the thinner build and mildly reduced bezel size. It really feels like Samsung cared about the design of the phone this generation, and the attention to detail here immediately puts Samsung near the top in this area. The front of the phone still feels a bit derivative, but I suspect that there isn’t much Samsung can do to change this when faced with design constraints like a physical home button. The S6 edge does look better in some ways, but ergonomically the sharper and thinner edge is a compromise compared to the normal S6. Either phone is still easily one of the best-designed phones I’ve seen this year.

Exynos 7420: First 14nm Silicon In A Smartphone
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  • akdj - Friday, April 24, 2015 - link

    That's NOT the same display. The Note 4 was a step up from 5Active and this is an even bigger step 'up' for AMOLED. The anomalies have been talked about in many reviews. As well as some purple fringing shooting low light (w/light source, like a candle). Killer display though!
  • Refuge - Friday, April 17, 2015 - link

    I'm not entirely sure, I kind wish he had elaborated more on it. Especially when this is a flagship phone and he says there is a defect with the perfect screen.

    But they only thing I can think of is how it seems to reflect much like a bubble would in direct sunlight. Maybe there is a risk of this rainbow effect screwing with color accuracy in direct sunlight? I'm not entirely sure either.
  • Ammaross - Friday, April 17, 2015 - link

    I see two vertical dark bars on left and right sides of the screen and one 1/4 from the top horizontally. Maybe that's what he's referring to...
  • Peichen - Saturday, April 18, 2015 - link

    I see the same thing as Ammaross. I guess some of you need to have your screen calibrated. I can see the dark bars on my home PC but I guess I won't be able to see it on the cheap/crap workstation at work.
  • Maxpower2727 - Friday, April 17, 2015 - link

    The only thing I saw in that photo was reflected light, which is to be expected with any phone and could hardly be considered a "defect." I really don't understand what he was getting at with that.
  • JoshHo - Friday, April 17, 2015 - link

    It was surprisingly hard to capture, but it's the photo of the horizontal/vertical bars when the display was under strong sunlight.
  • arayoflight - Friday, April 17, 2015 - link

    Josh, I think the front facing camera has a1/4.1" sensor, not 1/3". It was conformed by Samsung tomorrow.

    Also, the IMX240 has 1.2 micron pixels, not 1.12.

    Correct these 2 mistakes. The review was great though.
  • JoshHo - Friday, April 17, 2015 - link

    Apologies. I have fixed the FFC sensor size.

    To my knowledge the IMX240 uses 1.12 micron pixel size, going by Chipworks measurements and the released spec for the S5K2P2 sensor which has the same pixel count and sensor size.
  • arayoflight - Saturday, April 18, 2015 - link

    The s5k2p2 has 1.12 micron size. Also they're both 1/2.6" and identical resolution.

    But 1/2.6" necessarily doesn't mean they're same size. It just tells the size of the disk and hence there can be a difference.

    I think also on the Wiki page of IMX240 it's 1.2 micron. Though it's a different 4:3 IMX240 but I doubt they'll change the pixel pitch for a custom IMX240 used by Samsung.

    Just look into it. Even I want to know the perfect pixel size :)
  • will54 - Monday, April 20, 2015 - link

    Its the one horizontal stripe and the 2 vertical stripes on each side of the screen

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