





Hardware









Display





Battery life





Loudspeaker / earpiece

Camera





in spite of the lack of a dedicated macro mode

The Samsung Galaxy S II is 8.49mm (0.33 inches) thick. We whipped out a ruler and checked, it's true. Admittedly, that measurement expands a little at the handset's bottom, where a curvy bump houses its loudspeaker, and around the camera compartment, which protrudes ever so slightly from the rest of the body, but even at its thickest point, this phone doesn't allow itself to go beyond the 1cm mark. Given the veritable spec sheet overload that Samsung has included within the Galaxy S II, we consider its thin profile a stunning feat of engineering. In terms of the pursuit of the absolute slimmest device, NEC's MEDIAS N-04C is still the champ at 7.7mm, but global audiences should feel comfortable in replacing the Sony Ericsson Xperia Arc, which measures 8.7mm at its thinnest point, with the Galaxy S II for their benchmark slim device.More importantly, Samsung's new 4.3-inch handset feels better in the hand than the Arc, thanks to its intelligently curved sides that provide a comfortable and assured grip. The textured rear cover also feels good to the touch, and should withstand nicks and scratches a lot better than the original Galaxy S' backplate, though don't expect its featherlight construction to contribute much to the phone's overall rigidity. That will be provided by the still-mostly-plastic frame surrounding the phone's screen. We found little cause to doubt the Galaxy S II's durability, though we certainly wouldn't go recommending it as the phone for the builder in your life. There's a minuscule crevice between the handset's frame and screen that looks prone to gathering dust if exposed to dirty environments, and in spite of the generally reassuring build quality, the Galaxy S II is still made out of plastic rather than something more robust like HTC or Nokia's all-aluminum cases.Returning to the screen, it's fronted by one continuous sheet of glass, which protects a 4.3-inch Super AMOLED Plus display along with a batch of sensors and a front-facing camera at the top, and two capacitive Android keys at the bottom. The earpiece and Home button are the only disruptions to the sleek glass surface. Whatever coating Samsung has applied to the Galaxy S II's screen works very well, as it resists smudges and fingerprint marks much better than the average smartphone. A volume rocker and a power / lock key each take up one side of the GSII, with a 3.5mm headphone jack adorning its top and a micro-USB charging / data port at the bottom. That's it, no frills, no extras, and -- to the dismay of some -- no dedicated camera shutter button. At least the controls you do get all work very well. The side-mounted buttons do their job without fuss and touchscreen responsiveness is impeccable. The Menu and Back keys are purely capacitive, whereas the Home button is, well, an actual button -- it requires you to physically depress it in order to register input. That distinction may feel a bit awkward at first, but we rather enjoyed it. It meant accidental key taps were all but impossible to achieve and gave a more definitive nature to punching the Home key, which somehow felt appropriate given the fact it yanks you out of whatever you're doing and back to the homescreen.The Galaxy S II's screen is nothing short of spectacular. Blacks are impenetrable, colors pop out at you, and viewing angles are supreme. This would usually be the part where we'd point out that qHD (960 x 540) resolution is fast becoming the norm among top-tier smartphones and that the GSII's 800 x 480 is therefore a bit behind the curve, but frankly, we don't care. With a screen as beautiful as this, such things pale into insignificance. And we use that verb advisedly -- whereas the majority of LCDs quickly lose their luster when you tilt them away from center, color saturation and vibrancy on the Galaxy S II remain undiminished. It is only at extreme angles that you'll notice some discoloration, but that's only if you're looking for it and takes nothing away from the awe-inspiring experience of simply using this device.Whether you're pushing it to its limits with movie watching or just tamely browsing the web, the Super AMOLED Plus panel inside the Galaxy S II never fails to remind you that it's simply better than almost everything else that's out there. For an instructive example of the contrast on offer here, take a look at our recent post regarding the LG Optimus Big's upcoming launch in Korea. The pattern on that handset's white back was so subtle on our desktop monitor that we completely missed it, whereas when we looked at the same image on the GSII, it looked clear as day. Maybe that doesn't speak too highly of the monitors we're working with, but it underlines the supremacy of the display Samsung has squeezed into the Galaxy S II.We'd even go so far as to say it's better than the iPhone 4's screen, purely because, at 4.3 inches, it gives us so much more room to work with. It's almost impossible to split the two up in terms of quality of output, they're both top notch. Notably, however, that was also true of Samsung's original Super AMOLED display, the one that graced the 4-inch Galaxy S, and by now you must be wondering if there's actually anything significant enough in the new S-AMOLED technology to justify appending that "Plus" to its name. The short answer is yes, and it's all in the pixels.The one major downside to the original Super AMOLED panel was to be found in its PenTile matrix subpixel arrangement. It employed an RGBG pattern, wherein you got two green subpixels for every pair of red and blue ones, but the overall resolution was counted on the basis of green subpixels. Ergo, a PenTile 800 x 480 resolution wasn't as rich at the subpixel level as your standard RGB screen ( 768,000 versus 1,152,000 ), which resulted in slightly grainier images than would otherwise have been the case. Well, that "otherwise" scenario is now with us, because Samsung has switched to a Real-Stripe RGB array in the 4.3-inch Galaxy S II, which means it packs the full 1.152 megasubpixel count and, as we've already noted, the display looks delectable for it. A lesser criticism of the original Galaxy S was that its colors were a little blown out and oversaturated, but that's once again rendered moot on the successor device -- a software setting called Background effect allows you to tweak saturation, so if you're feeling a little melancholy, you can tone down the intensity of your handset's colors to match your ennui. Basically, if we haven't made it clear already, this is everything that Super AMOLED was, minus the bad parts and plus an extra .3 inches in real estate. A triumph.Okay, there is one mildly irritating aspect about the Galaxy S II's screen and that's the auto-brightness -- it tends to hunt around for the correct setting and occasionally makes jarring jumps between darker and brighter values. Whether that's down to the ambient light sensor or the software reading data from it isn't all that important, what's relevant is that we found ourselves more comfortable with a human helming the brightness controls.The story of the Galaxy S II's battery life cannot be told without returning to its luscious screen. Being an OLED panel, the 4.3-inch display here doesn't use one single backlight as LCD screens do, and instead only illuminates the pixels that are needed to actively display content. This is the reason why it can generate truer blacks than any backlit panel, but it also permits the user to optimize battery life by doing such things as switching to a darker wallpaper or reading ebooks against a black background. We didn't actually bother with such tweaks, we were too busy exploring every one of the myriad features on this phone, but the option's there as an extra dimension of obsessive control if you care for it. As to the Galaxy S II's actual endurance, we found it highly competitive with the latest batch of Android phones. After 20 hours, half of which were filled with the above tinkering and exploration, we managed to drag the Galaxy S II down to 15 percent of its original charge. This was with our usual push notification suppliers, Gmail and Twitter, running in the background and while constantly connected to our WiFi network.Using the Android System Info app (available for free on the Android Market), we found confirmation that the Galaxy S II is indeed running a 1.2GHz ARMv7 dual-core processor, but more importantly, we also dug up a breakdown of how often the SOC was reaching that max speed. Only 9.2 percent of our use harnessed the full 1.2GHz, with Samsung wisely downclocking its chip to as low as 200MHz when the phone's idling (that accounted for 46 percent of the Galaxy S II's uptime). What's impressive about this is that we never hit upon any performance bumps to indicate that we were running at slower speeds. Clearly, Samsung's power management system is doing its job well. In summary, we expect you'll be able to get a decent couple of days' regular use out of the Galaxy S II -- our experience with it came close to what we got out of HTC's Incredible S and Desire S that recently crossed our review bench -- though processor-intensive activities like HD video playback will eat into that, as will the variability of 3G coverage. What we can say with absolute certainty is that the Galaxy S II is no slouch when put against its contemporaries, and it also marks a definite improvement in longevity over the original Galaxy S.The loudspeaker is surprisingly passable, hell, it's more than passable. We're probably being swayed by the gorgeous screen on this phone, but playing back video without relying on headphones feels just fine, unlike the usual grinding chore that it is on most current phones. That being said, Tinie Tempah's Pass Out -- a song that starts out dominated by deep bass -- sounds like a hilarious remix of the original on the GSII owing to the speaker's inability to dip down low enough to sound out the track's bassline. Bass deprivation is a typical shortcoming of smartphones, which isn't looking likely to find a fix any time soon. You still won't be forced to abandon your dubstep addiction while on the move, however, as Samsung bundles a solid pair of in-ear headphones that do a very respectable job of both isolating external noise and delivering audio to your cranium. Including an in-line mic that doubles as a music play / pause button is no bad thing either. We'd be remiss not to point out that the Galaxy S II's loudspeaker is positioned rather poorly -- it and the two slits cut into the phone's rump for its output face the rear. Laying the handset down on a flat surface immediately alters the sound and a stray finger - a single fleshy finger -- can mute almost everything.The earpiece performed as close to the middle of the road as you can get. Calls sounded good on our end and equally so on the other side. We had a couple of garbled moments during one conversation, but that's more likely due to network performance than some fault on the Galaxy S II. As to the network itself, the GSII exhibited no reception issues or aberrant behavior, though we weren't able to check out its rated 21.1Mbps HSPA+ speeds on our UK carrier.Samsung eschews the default Gingerbread camera app for its own effort, which comes with a neat slice of customization. The left menu column gives you three shortcut slots for the functions you consider most relevant to your photographic exploits. By default, two of them are populated with a button to flip between the rear-facing 8 megapixel and front-facing 2 megapixel camera and another one for controlling the flash, but you can do whatever you fancy. Resolution, ISO, scene and shooting modes, or adjustments like white balance, contrast, metering, and after-effects can all be included in there. And if you consider different things important when in video mode, that's no problem, because that retains its own set of shortcuts separate from the stills mode. It's a fully realized suite of options, even if most users will neglect the left side and just keep bashing the capture key on the right.When they do so, they'll be treated to some excellent results. The camera compartment on the back of the Galaxy S II justifies its size (it's still tiny, it just happens to protrude a little bit from the ultrathin GSII body) with the collection of great detail in nearly every shot. What most impressed us about this sensor is that images remained relatively sharp at full resolution -- such as the one you see above, it's a 100 percent crop from an 8 megapixel capture -- with Samsung feeling confident enough in the quality of its hardware to apply almost no noise-reducing blur under default settings. That does permit for graininess to sneak into some images, but on the whole, we're looking at one of the finest smartphone camera sensors around. Closeup shots are handled very well too,There's a Macro setting under the Focus mode menu; thanks, Josh!). The flash is a typically overpowered LED unit, though we were impressed to see the Galaxy S II use it while focusing on a nearby object but not while shooting -- had it been used in the shot, the flash would've whitewashed the entire composition, so it's good to see the software showing a timely bit of restraint.The only real issue we encountered was that that the GSII's sensor has a predictably narrow dynamic range, meaning that photographs with high contrast between dark and well-lit areas end up with either deep shadows or blown out highlights, depending on which you opt to focus on. Then again, that can lead to some highly artistic / moody shots, so we're not too sure this is a major downer. A limitation, sure, but not something that will seriously impact your enjoyment of snapping pics with this phone.