These days smartphones are on the rise of the hype. MWC was the perfect scenario for their teasers and now companies are releasing their final products one after another, in a perfect tech-choreography.
Manufactures (or should I say machinfacturers) need to differentiate in order to justify the existence of the premium and ultra premium range of products. Smartphones have become a commodity and it's hard to find reasons to spend 700€+ in a smartphone when there are plenty of 200€ models with almost the same apparent functionality. But there is more to than meets the eye here.
Premium and ultra premium models are built around exclusiveness. Manufacturers have to develop either brand new industrial designs and materials, or new/excellent technologies. Perfection is what matters most here. There is no room for mediocrity. Software is not so relevant in the end, for app stores usually offer clever and multi platform solutions for almost every need we may have.Bloatware is not desirable in general, and companies as Samsung have reduced the number of in-house apps preinstalled on the phones in favor of standard apps.
Apple, Sony, HTC, Microsoft, LG, Huawei or even Blackberry work on high quality devices. Another peculiar example is found In Japan, where LG designed a Firefox OS limited edition device quite beautiful and capable (and expensive). The margins of these premium devices are way above the margins of commodity smartphones, and successful flagship models help companies to increase their incomes, and their reputation as trusted and desirable brands. The cost is high as well: companies have to develop new manufacturing processes, plus invest in the research and development of new industrial and electronic designs.
Innovation, a complex recipe
Designing a flagship device is not as simple as mixing as many ingredients as you can. Neither it is to choose those technologies with more horsepower to fill in the spec sheets of marketing brochures or comparison tables of blogs or magazines. A flagship device is not only about numbers, is about usability, quality or design. If there is no balance between these variables, a device can go from successful tosucksessful just in weeks or days. Fortunately, smartphones usually exhibit a honest balance: smartphone companies depends on them to balance their financial assets, so they invest a lot in the development of their next releases.
If there is no balance between specs, usability, quality or design , a device can go from successful to sucksessful just in weeks or days
The ingredients of innovation in smartphones are quite a few: materials, design, camera, processor(s), sensors, battery/energy, screen, connectivity or the operating system. The quality of the result is not the sum of all of these "ingredients", but the harmonious integration of them.
The Galaxy S6 Edge "recipe"
Samsung achieved an enormous success with the Galaxy S Range of smartphones. The first Galaxy S was released in 2010, and lifted Android to the top of the mobility market with 25 millions of units sold. Galaxy SII, S3, S4 y S5 were the next generations, released with a regular periodicity of one year. Galaxy S4 was not as successful as expected, and Galaxy S5 was an underachiever.
So Galaxy S6 was forced to be a milestone in the Galaxy S family. Marketing is quite relevant for Samsung and it adds as another ingredient in Samsung "recipes". It's like the topping in an ice cream, or the sauce of the barbacue. And it didn't work well with Galaxy S4 nor S5. If the meat is sticky and the ice cream is not creamy, the sauce or the topping are worth only for the first bite. If the technology behind a smartphone is not good, marketing is useless after couple of months.
CPU
Samsung has decided not to choose the Qualcomm 810 processor. The Galaxy S6 Edge CPU is the Exynos 7420, with a big.LITTLE architecture comprised of a quad core 1,5 GHz Cortex A53 unit plus a quad core 2,1 GHz Cortex A57 unit. The eight cores don't work at the same time. Depending on the load, the system uses the A53 unit or the A57 one. Performance-wise, the benchmarks shine with this CPU. At least the raw numbers. If we dive into specific details, we discover some interesting facts. For instance, the comparison between the iPhone 6 Plusand the Galaxy S6 Edge in the single core results shows that the Apple A8 CPUis better than the Exynos 7420 (1.618 points versus 1.493 points). In the multi core test, the A8 gets 2.924 points and the Exynos 7420, 5.163 points. But the Apple A8has 2 processors and the Exynos 7420 has 4 (8 if we take into account the big.LITTLE architecture). In Antutu, iPhone 6 Plus gets 48.000 points, whileGalaxy S6 Edge gets almost 70.000 points. But again, iPhone 6 Plus has 2 CPU at 1,4 GHz and Galaxy S6 has 4 A57 Cores running at 2,1 GHz. Core for core and clock for clock, Samsung is far from being a revolution in the field of CPUs. But the raw big numbers support Samsung.
Antutu Benchmark yields almost 70.000 points. Quite an achievement for a CPU like this.
These new CPUs are all 64 bits ready. The first one with 64 bits design was theApple A7, and then Mediatek, Qualcomm and Samsung have been upgrading their SoCs to include 64 bits registers, memory addressing or machine code instructions to accommodate both the new 64 bit OS and apps compatible with 64 bits calculations.
From a manufacturing perspective, Samsung has been able to go down to a 14 nm FinFET manufacturing process, while Apple uses a 20 nm manufacturing process, as it does Qualcomm with the Snapdragon 810. Next gen SoCs fromQualcomm and Apple will use either 16 nm or 14 nm lithography. AndQualcomm is working in its own microarchitecture for the Snapdragon 820 SoC, but so far Samsung has the silicon advantage.
If we perform some tweaks to the CPU clock values, like forcing the speed to 800 MHz for the cortex A57 cores and 400 MHz to the A53 cores the results are simply ridiculous, with 199 points for single core and 575 for multi core. Probably because the cores running are just the A53 cores, with in order architecture.
From a graphics perspective, benchmarks as 3DMark Ice Storm Unlimited yields17.965 points to iPhone 6 Plus and 21.250 points to Galaxy S6 Edge. Apple A8 has 4 graphic cores in its PowerVR Series 6XT GX6450 graphic engine , and Exynos 7420 has 16 graphic cores in the Mali-T760 MP8 graphic engine. 
If we force the Exynos 7420 to run at 1,5 GHz using a CPU tool in a rooted device, the results are 1.088 and 4.338 points for the single core and the multi core tests inGeekBench 3. The single core result fort the Apple A8 CPU is 1.618 points, running at 1,4 GHz and with a manufacturing process of 20 nm, while Exynos 7420uses a manufacturing process of 14 nm.with a nominal speed of 2,1 GHz for theCortex A57 Cores.
The CPU is related to the performance of the multimedia functionality as well. To some extent, the fact that the Galaxy S6 is not able to record FullHD video at 60 fps and take pictures at the same time, or the fact that the maximum number of burst pictures you can get is 30 at @10fps, or the slow motion video is limited to 720p@120fps reflect a degree of disadvantage compared to the iPhone 6. Apple iPhone 6 is able to record 720p@240fps, record FullHD vídeo @60fps and take pictures at the same time and capture continuous pictures in a burst at 10fps without the limitation of 30 pictures.
These advantages and advanced capabilities in the iPhone 6 are related at some extent to the presence of a SoC with advanced processing capabilities. Working with 16 Mpx instead of 8 Mpx makes it harder for the Galaxy S6 to handle pictures and video, but if Exynos 7420 were a real revolutionary CPU, it should handle 16 Mpx without its present limitations. And even work with RAW image formats as theLG G4 does, or even the Lumia 930 among other smartphones. LG G4 exhibits some of the weakness of the Galaxy S6 in terms of slow motion video or busrt pictures, though. The CPU is a Qualcomm Snapdragon 808, with an architecture that follows the big.LITTLE blueprint found in ARM reference designs. .
The temperature is fairly low compared with the Snapdragon processors.Measuring the temperature with CPU Temp and an infrared thermometer, there were few moments were the temperature reached 40 ºC. But most of the times temperature was even below 30 ºC. On the other side, Snapdragon processorsreach this limit easily and go into the 40 ºC range soon after handling CPU loads.HTC One M9, for instance, goes even above 50 ºC in some benchmark scenarios.iPhone 6 Plus performs quite well, with 40 ºC as the peak temperature measured with an Infrared thermometer on the external surface.The manufacturing process is more advanced in the Exynos, and this translates into better performance and lower temperatures.
Above, Some specs and performance results compared.
The problem with the Exynos 7420 is its architectural approach, with thebig.LITTLE schema adopted from ARM. Apple is developing its own architecture (Cyclone), and even Mediatek is working on its own designs. Qualcomm has adopted the big.LITTTLE approach as well, and the results are not stellar, so to speak. With 2 cores and 20 nm, Apple is doing way better than Qualcomm and Samsung with 4 or 8 cores.
RAM
Memory usually is related to performance. And at some extent, it's true as long asnot enough RAM may result in a sluggish response of apps or the UI. But RAM alone doesn't mean that PCMark is going to perform better with 3 GB compared to the same device with 1 GB. Memory management depends on the OS and the system architecture. For instance, Apple A8 has 1MB Level 2 cache plus 4 MB Level 3 cache memory, while Exynos 7420 has 2 MB. Apple iPhone 6 works well with "only" 1 GB of RAM, and Android devices are "happy" with 2 GB or 3 GB.
More RAM is useful in multitasking scenarios. And yes, Samsung Galaxy S6 inherits the multitasking capabilities of previous generations. Android devices are pushing these kind of multi window experiences, running more than one app at the same time. But this functionality is perfect for devices with huge screens as the Galaxy Note or Nexus 6, but not so perfect when you work with a smaller screen. And even more when you don't have the option to use the S-Pen. In any case, numbers wise, 3 GB of RAM LPDDR4 is the required amount of memory for a high end Android device. But it's not meant to be compared with other mobile platforms, Apple, Windows Phone, Blackberry or Firefox OS.
Storage
Samsung Galaxy S6 differs from previous S designs. The S6 family got rid of boththe removable battery and the MicroSD slot. So we depend on the internal storage plus the cloud and external devices to manage our files. The design of theGalaxy S6 phones, with a high end industrial craftsmanship implies facing bold decisions, as removing unnecessary elements as the MicroSD slot and the removable battery. This way, Samsung can get rid of the protective enclosure of removable batteries leaving room for a thinner design or more capacity. Galaxy S4 and S5 were not as successful as expected so there was room for a change in the course of action. The options for the Galaxy S6 and S6 Edge models are 32 GB, 64 GB or 128 GB of internal storage. The best choice is 64 GB. Remember that this capacity is shared with system files, so 32 GB probably will be not enough.
There are plenty of external storage solutions, wireless or USB on the Go. I've not tested the USB on the Go functionality in the Galaxy S6, but it seems both new models are compatible with OTG. Cloud storage is another alternative. And it works well as long as you set up the synchronization among different solutions asFlickr, Google Drive. One Drive, Dropbox....
Design
Galaxy S6 Edge and Galaxy S6 differs in their designs. While S6 has a standard and planar 5,1'' screen, S6 Edge exhibits a "wow-effect" screen with curved edges. Its usability is questionable, and it just adds an "edge interface" to display special notifications or special menus. The idea comes after the Note 4 Edge, with one curved edge of the screen. The 5,6'' screen seems to be more suitable for this kind of UI delicatessen. With Galaxy S6 Edge, Samsung has adopted the curved edge screen on both sides. It has a wow effect, but in the end it's disturbing when using apps that use the whole screen. The ergonomics aspects of this choice are subjective. The grip is more futile, with less contact with the sides of the device. And it's more convenient for carrying the phone in our pockets.
The curved edges of the Galaxy S6 Edge screen renders a "neon" lightning effect when laying face down on a flat surface.
I have a bigger than average hand, and when using the phone as a camera to take pictures or record video, it's not easy to change from vertical mode to portrait mode handling the phone with one hand only: somehow the phone slips and float inside the hand in the process and you loose grip from time to time. Besides, it tends to slip over any surface and even clothes due to its glass construction. A cover may fit well here, to prevent this slippery behavior and/or protect the phone against accidental drops. It's a robust device though, but you can never know if the next fall will be the fatal one.
The screen cover is made of Gorilla Glass 4. And the back of the phone is covered with Gorilla Glass 4 as well. The power and volume buttons fit well, and are responsive and precise. And the home button adds the fingerprint readerfunction as well. This time the fingerprint reader works fast and well. Much more better than the swipe mechanism of the Galaxy S5.
The battery has a capacity of 2.600 mAh / 10,01 Whr. iPhone 6 Plus has 11,1 Whr and iPhone 6 has 6,91 Whr. The battery life is discussed later though. It's compatible with the Qi wireless charging standard and there is a fast charge mode where you can get 4 hours of work time with 10 minutes of battery. More about this later.
The edges of the device frame are rounded, and the industrial design is excellent. No doubt about this. At last, Samsung has a flagship device able to compete with Apple, HTC, Sony or even Blackberry, with high end devices quite well finished.
Screen
The screen specs are the same in both devices, with a theoretical QHD resolution of 2.560 x 1.440 pixels. This number of pixels yields 577 dpi.The screen is Pentile Super AMOLED. This technology is widely used by Samsung in almost all its range of mobiles devices. Probably because Samsung acquired the company that invented this screen technology and founded a new one, Nouvoyance Inc. The Pentile Screens are peculiar: they have a RGBG subpixel arrangement. The real and precise native number of green subpixels (ie. 2.560 x 1.440 = 3.686.400 pixels, but half the number of red and blue subpixels (1.843.200). the total number of subpíxels is 7.372.800. Withj this number of subpixels, a RGB matrix could render 2.457.600 whole pixels comprised of one red, one blue and one green subpixel each. This number of pixels are equivalent to a native resolution of 1.920 x 1.280 "whole" pixels, but not 2.560 x 1.440 as it says in the Galaxy S6 screen specs.
The Pentile Matrix is not RGB, but RGBG. It's not that a pixel has this four subpixels though. Each "pixel" of this 2.560 x 1.440 pixels resolution is either one RG or BG combination. The screen controller has to "decide" how to combine this partial pixels to generate different color tonalities. Pure colors are easy, but whites and mixed colors suffer of color casts, green above all.
Here we can see how the Galaxy S6 screen (left) suffer from a green color cast. To the right, HTC One M9 doesn't exhibit color casts.
Super AMOLED Technology has an advantage over LCD: a black screen is true black. LCD has an always on backlight and LCD crystals block or unblock the backlight to render blacks or render different colors, but this blockage is not perfect and there is a perceptible leakage of light when the screen is black. The contrast ratio is almost perfect in Super AMOLED screens, and pure colors render quite well, with high saturation and appealing to the eye. But as soon as the screen has to render text, web pages, app interfaces and whatever content different from movies or pictures, LCD screens have an advantage. On the other hand, themaximun brightness in a Super AMOLED screen is not as high as in a LCD screen. According to DisplayMate iPhone 6 screen is brighter than Galaxy S6 Edge screen. And this is just one example.
AMOLED Technology is emissive so each subpixel generates its own light. LCD technology depends on the backlight to generate the luminosity of each subpixel, with an LCD screen able to block the light partially or totally,and thus modulating the red, green and blue subpixels intensity.
The appealing of the Super AMOLED screen is OK from the point of view of the eye once it gets used to the screen, but the technology is not that OK. At least in smartphone applications. TV screens or multimedia devices should be fine for Super AMOLED though.Watching the TV or movies is perfect for AMOLED screens as long as pure blacks do matter a lot.
The eye is able to adjust to any condition. Pentile displays take advantage on this ability, but it's by no means the best screen for an ultra premium smartphonewhere users demand high end technologies with no downsides at all. AndGalaxy S6 screen has a downsampling issue with collateral effects as the greenishcast of the whites or the incorrect rendering of certain patterns due to the lack of real native pixels to draw everything with native detail. Yes, pictures and movies or contents with pure blacks and moving subjects are OK, but an smartphone is a multipurpose device, not a multimedia player.
The high end model, the S6 Edge with 128 GB costs as much as 1.000€ and this price point deserves excellence, not apparent excellence.
Rear camera
The rear camera in the Galaxy S6 Edge has a Sony Exmor IMX240 sensor with16 Mpx. It's the same sensor used in the Galaxy Note 4, with an improved f:1.9 optics. This value represents the luminosity of the lenses. The average high end devices exhibit f:2.2 or f:2.0 values for the aperture, but Samsung has achieved the f:1.9 value without compromising the quality of the pictures. LG has gone even further and its camera goes to f:1.8. More light reaching the sensor is better, as the camera is able to get the right exposure without increasing the ISO value. To get the maximum resolution you have to chose the 16:9 mode. Otherwise the maximum resolution is just 12 Mpx. There is a Pro mode where you can adjust some photographic parameters as the ISO value or the EV compensation. Automatic mode should work well. Panoramic mode is massive, with the ability to capture full panoramas seamlessly.
The camera can be invoked anytime pushing the home button twice. Taking pictures is a fast and intuitive task, with great results comparable to the iPhone 6 results but with 8 pixels more.
Burst shots are limited to 30 pictures at 10 - 12 fps. iPhone 6 is able to capture as many shots as you like as long as you keep pushing the home button. And youcan't take pictures while recording Full HD video at 60 fps or above. iPhone 6 is able to capture pictures while recording Full HD @60fps.
Video quality is fine. 4K format available, but is better to record at FullHD. It takes less storage and it's easier to edit and share.
Slow Motion recordings are limited to 720p@120fps. iPhone 6 is able to record720p@240fps, and the videos are ready to share. Galaxy S6 Edge requires some edit before exporting the final video. It's kind of weird, though.
There are more "photographic modes" ready to download. They are installed and then added to the available photographic modes ready to choose. For instance, the"Animated GIF" or the spherical panorama. The animated GIF option is quite funnyand converts a sequence of pictures in an animated GIF. Nothing you can't do with third party apps though. The Google Camera is available as well if you prefer the standard app from Google. the spherical panorama works fairly well here, but you don't have options for 4K video, for instance.
The camera is well balanced and combined with an app for editing pictures as SnapSeed, you can get high quality pictures from this phone. Personally I prefer not to use HDR from the camera itself but add this effect later on with SnapSeed.The HDR video option is useful though: it's not so easy to add this effect to a video in post production.
I compared three pictures with Photoshop: one taken with Galaxy S6 Edge, another one with the iPhone 6 Plus and the last one with the Lumia 930 in raw mode. Galaxy S6 performs quite well even in low light scenarios.
I would rather prefer to achieve the maximum resolution images with a 4:3 form factor instead of the panoramic one, but it's a technical issue related to the choice of the sensor and how it's built.
Front Camera
The front camera has been updated with a 4:3 form factor, 5 Mpx sensor and af:1.9 lens. This makes it possible to capture excellent pictures, whether they areselfies or not. Front camera is not as critical as the rear camera in terms of raw quality, but it's good news to have this kind of extra quality. It's a trend,though, and there are already devices with front cameras equipped with 8 Mpx sensors.
Battery
The 2600 mAh battery behaves fairly well as long as you don't push the phone above an average usage. But taking into account the speed of the CPU or the quality of the camera, it's easy to spend a lot of time tampering with multimedia features, browsing the web, playing games or running apps.
Compared to other phones, Galaxy S6 Edge battery has a capacity of 2.600 mAh / 10,01 Whr. iPhone 6 Plus has 2.915 mAh / 11,1 Whr and iPhone 6 has 1.810 mAh / 6,91 Whr.LG G4 has a 3.000 mAh / 11,55 Whr.
I installed Battery Spy a software designed to track different parameters as temperature , or discharge rates and here you can see, as an example, the curves for three days. Clearly, the battery doesn't last the whole day. I take a lot of pictures and use social netwiorks heavily, that's true. But the phone runs out of battery fast if you use it frequently.The green line is the charge level. As you can see, the battery is depleted way before 24 hours.
On the other side, the battery charges quite fast. Here you can see the charge rate curve. The time scale is 2 hours, and Galaxy S6 Edge charges completely in this period of time. Half an hour charges almost half the capacity. So we can get the phone up and ready to go while having meal, driving our car or enjoying a coffee. You need a fast charger able to inject watts at a fast pace, as the charger included with the phone.
Galaxy S6 Edge includes the same charger as the Galaxy Note 4, with fast charge as well. This charger has a dual output: 5V and 9V, and that's the key to get a reduced charging time.
Wireless charging is possible. It's compatible with the Qi standard, so you can use charging docks of different brands. .
Connectivity
Galaxy S6 Edge integrates the latest technologies for communications. WiFi 802.11ac is well implemented. As you can see, the Speedtest numbers show excellent figures for the download speed using WiFi 802.11ac.
BT 4.0 Low Energy, NFC, Ir, microUSB 2.0, GPS and Glonass or LTE Cat 6 are its connectivity enablers. It has no radio FM, though. It integrates heart rate measurement using light. The USB port is USB On The Go ready. At least it seems to be so, but I haven't tested it by myself.
Software
Samsung has changed his bloatware approach Keeps preinstalling a number of apps, as S-Health, S-Voice, S-Planner, Smart Remote, Voice Recorder, plusMicrosoft Apps as One Drive, One Note or Skype. Besides, Samsung has partnered with a number of service providers to offer its Samsung Galaxy Gifts promotion.to get contents from Orbyt, NYT, WSJ, or apps as Autodesk SketchBook. It's a good offer, plenty of free subscriptions.
These Samsung apps are OK, but have to compete with more apps designed to solve the same needs.
Knox
Samsung is working hard in order to secure their devices for enterprise applications. Knox has been evolved to fit in MDM scenarios as those under BES(Blackberry Enterprise Server) management. This way, companies are able to create a protected environment in the smartphone to install and manage business applications, accounts and contents. If the device is compromised, the Knox environment may be erased remotely, or locked. Business apps, data or accounts are kept under the security of the Knox secure space.
The Galaxy Note family is a better solution for productivity scenarios. S-Pen, the screen size and technical features are well aligned with productivity scenarios.Note 4 lacks a 64 bits processor, but is good enough to fit well in the enterprise. Is well designed and is a balanced device for personal use as well. The screen is AMOLED Pentile, but S-Pen is a disruptive feature good enough to help to "forget"about the screen technology. Besides, Galaxy S6 audience includes enthusiasts, and they deserve weakness-less technologies and features.
Root
Gaining root access in the Galaxy S6 Edge is quite easy and should be very convenient for advanced users. With root access you can install apps withadministrative rights to change low level parameters. For instance, you can install apps to change the screen DPIs, so text fonts scale down to accommodatemore text and tablet modes in certain apps. The Touchwiz UI is not optimized for this changes in DPIs, but in multiwindow scenarios is quite convenient to have more text in each window.
Rooting your device allows us to install security apps a Android Lost, or system apps to control the CPU and modify its speed.
The final meal: A good device but not brilliant
After using the device for several weeks, first you experiment this wow effect as a collateral effect of its design. It's a well manufactured device, but the functionalityis not as advanced as it's supposed to be. The curved screen is fine for aestheticsbut not for the UI. At least not now. The notifications app or night clock are not enough to justify the investment in the curved screen.
It's robust and the touch and feel are aligned with the Galaxy S6 Edge being a premium device. No doubt about that. But technology wise, the only premium elements are the processor fabrication process and the camera. Exynos 7420exhibits a 14 nm FinFET fab process, and it's able to improve both frequency speed and thermal behavior compared with Apple or Qualcomm CPUs . But apart from this feature, the big.LITTLE architecture keeps being one step behind Apple CPU. And the image processing/DSP unit is not powerful enough to implement functionalities as advanced as those you can find in the iPhone 6. Slow Motion or Burst mode in the camera app are more capable in iPhone 6 devices, for instance.
Rear camera is great, though. Static images are plenty of detail and exhibit low levels of noise. Compared side by side with images taken with the iPhone 6 Plusor even Lumia 930 in RAW mode, the level of detail, noise or light capture abilities are brilliant, but with the extra 8 Mpx advantage on the side of the Galaxy S6 Edge compared with the iPhone 6. And front camera is quite advanced too.
The AMOLED screen is OK for playing movies or watching pictures, but not for reading, browsing the web or using productivity applications. This kind of ultra premium devices don't deserve a technology as AMOLED. Galaxy GearVR glasses suffers the consecuences of Pentile Matrix as well. The edges of text exhibit a weird behavior as a consequence of the variable patterns used to render images in a Pentile screen.
Battery life is as bad or as good as you can expect from a high end device. No matter how you set up your device, you have to charge it overnight... at least. If youbarely use the device, probably the battery will last more, but if you don't use the smartphone, just go for a cheaper device.
The 32 GB Galaxy S6 Edge costs 849€ in retail stores as Mediamarkt. And 64 GB and 128 GB models cost more. It's a price higher than you can get for it. Galaxy Note 4 keeps being a better option, with the advantage of the S-Pen. Galaxy S6 is a better choice too. The curved edges are fine for aesthetics but not for the UI or UX experiences. The LG G4 will cost 649€, and it seems to be a good choice too. AndHuawei P8 costs 500€ . iPhone 6 with 64 GB costs 799€, while the Galaxy S6 Edge with 64 GB costs 949€. It's not a bad device. And it's one of the best Android devices so far. But it's overpriced with some weak points as the screen, unacceptable for a device like this. Should it be priced in the 6xx€ range? Fair enough. So far, iPhone 6 keeps being the paradigm of a premium device.
By the way, the hands on with LG G4 was fine, but the CPU is not good enough to be in the excellence team. Design wise and functionalities wise, LG G4 is meant to be a serious contender in the Android smartphone market. And the camera seems to be great as well.
And last but not least, the rugged version of Galaxy S6, the Galaxy S6 Active,seems to be an amazing device for extreme scenarios. But I can't tell for sure until I've tested it.
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