Initial Thoughts

With the Galaxy S6 and S6 edge Samsung claimed that they wanted to completely rethink how they designed and made smartphones. On the surface, it seems that Samsung has delivered on this promise as the Galaxy S6 and S6 edge are unlikely any other Galaxy S phone they have made previously. There is no removable battery, no microSD slot, or even a removable back cover. I would’ve liked to see a microSD slot, but I personally wouldn’t be affected by being limited to 32GB of internal storage. The removable battery issue is a bit concerning for me though, as it’s likely that disassembling this phone to replace the battery will require extensive use of a heat gun to loosen glue that may not adhere properly when reassembled. The materials are now aluminum and glass, which dramatically affect in-hand feel. I definitely like the move to the aluminum and glass design for the improved look and feel of the phone, but the use of the glass back is a bit annoying as the phones have a tendency to slide off pretty much any table. The edge variant of the phone also feels quite sharp in the hand and almost too thin to hold, but this is generally quite subjective.

Outside of design, there is a lot to talk about in the SoC and display. The Exynos 7420 SoC appears to be class-leading in performance, although there is the obvious question of power consumption that still has to be answered. Samsung’s first 14LPE SoC seems promising, although we’ve yet to validate whether big.LITTLE is more efficient than when we last tested it in the Exynos 5433. The GPU is generally quite close to the Adreno 430, with about a 10-20% advantage in performance depending upon the workload, although at the same clock speed it probably wouldn’t have any advantage. The 1440p display can also reduce performance compared to a 1080p display.

Speaking of displays, Samsung has integrated an incredible display into both versions of the Galaxy S6. I’m really blown away at how far AMOLED has come in the past few years, as the Galaxy S6 is one of the best displays we’ve tested for luminance and overall color accuracy. The only real problems I can see are color shifts with viewing angles, and white point tending to be a bit green depending upon the unit we’re looking at. There are some edge-specific issues, namely uneven luminance and odd color shifting towards green hues on white at the edge of the display. Other than this, the display of the Galaxy S6 is relatively perfect with its dark, inky blacks and amazing color.

Obviously an SoC and display aren’t the only issues to discuss in a smartphone, but given the limited time that we’ve had with the device this was all that could be tested. We hope to have our full review for both devices completed in the near future, and to be able to provide the full picture of the Galaxy S6 line at that time. Pre-orders for the US Galaxy S6 variants will begin on March 27th, and the phone will go on sale on April 10th throughout the US with 32, 64, and 128 GB SKUs in Black Sapphire, White Pearl, and Gold Platinum. The S6 edge and S6 will be available on AT&T, Sprint, T-Mobile, Verizon, and US Cellular, but on Boost Mobile, Cricket Wireless, and MetroPCS only the S6 will be available.

GPU Performance and Display
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  • JeffFlanagan - Thursday, March 26, 2015 - link

    Having to unscrew something isn't a problem for most of us, but it's more likely to be a situation where you have to heat the phone and pry it apart, which I'd be hesitant to do. Of course upgrading phones every year solves this problem, and all I really need is three hours of battery life since I have power at home, at my office, and in my car.
  • sleepeeg3 - Thursday, March 26, 2015 - link

    You have to heat the phone to pry it apart and several other things. It's a major ordeal.
    http://www.ubergizmo.com/2015/03/galaxy-s6-teardow...
  • Poik - Thursday, March 26, 2015 - link

    You haven't seen the S6 teardowns have you? There's no screws just hidden fasteners and a shit ton of glue. I don't know about the new iPhone6 and 6+ but by comparison an older iPhone is very simple with those 3 screws.
  • nathanddrews - Thursday, March 26, 2015 - link

    Non-removable battery and lack of SD are deal-killers, unfortunately. The integrated wireless charging is wonderful, but being forced into a service contract just so I can get a new battery in a year is not happening. My S3 has seen two battery replacements in its lifetime. If not for the option to install a Qi charger, my buggy USB charging port would have killed it as well. As for the missing SD slot... just no.

    Oh well, a used S5 will be a decent upgrade when it comes time.
  • hrrmph - Friday, March 27, 2015 - link

    My thinking exactly. This S6 is so bad that when it comes time to upgrade, the S5 might be the logical choice.
  • Novacius - Thursday, March 26, 2015 - link

    Displaymate already tested the display of the S6. It needs 20% LESS power at the same brightness than the S5's display, despite it's higher resolution. I think it's awesome.
  • Novacius - Thursday, March 26, 2015 - link

    The SoC should also be much more efficient (14nm) and they use LPDDR4 now, which uses lower voltages. I'm not very concernced with battery life.
  • Thermogenic - Thursday, March 26, 2015 - link

    My understanding is that Samsung's 14nm is not comparable to Intel's 14nm. It should still be better than what they were doing, but not quite as impressive as Broadwell's gains were/are on the PC side of the house.
  • Novacius - Thursday, March 26, 2015 - link

    You're right, but it's still better than every other ARM chip at the moment in terms of production process. And it's also pretty close to Intel I guess. Compared to Samsung's 20nm Exynos 5433, the GPU now needs up to 300mV less. That's HUGE.
  • Azurael - Thursday, March 26, 2015 - link

    Maybe, but every past Samsung SoC has run far hotter than comparables from other manufacturers, so I'll believe it when I see it.

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