Sony Xperia Z Ultra vs Samsung Galaxy Mega 6.3
Introduction
Battle of the titans gets an entirely new meaning when you pit the Sony Xperia Z Ultra against the Samsung Galaxy Mega 6.3. There have never been phones before with screens that large, so we had to stake a cage match.
Design
Believe it or not, the 6.4-inch Z Ultra is much larger than the 6.3-inch Galaxy phone. It is way taller and a tad wider than the Samsung handset, which makes it even more unwieldy to talk on or carry around. Not that with 8mm of the Mega 6.3 isn't slim, but at just 6.5mm, Sony's handset is record thin, which eases handling somewhat.
The Galaxy phone has the advantage of a user-replaceable battery, unlike what we get with the unibody design of the Xperia Z Ultra, which still grants you a microSD slot for storage expansion, though. Sony's sealed chassis has a major purpose, however, and it is to give the phone its IP58 certification, which means it can stay in up to 5 feet (1.5m) of water for about an hour, which is a huge plus for the Z Ultra when pitted against the Mega 6.3 – just try to watch the final season of “Breaking Bad” in the bathtub and you'll see what we mean.
Display
The Galaxy Mega 6.3 features a HD LCD display, which is the norm for upper midrangers these days. It spreads the 720x1280 resolution over the giant 6.3” screen, ringing in 233ppi pixel density- nothing to write home about, so some text and icon corners will appear jagged if you look closer. Sony Xperia Z Ultra features a 1080x1920 pixels Full HD display with 342ppi pixel density, so even at that screen size you'd be hard-pressed to tell the individual pixels from a normal viewing distance.
Sony uses its new Triluminous technology for the panel, which provides more vibrant colors with a richer number of hues on paper, and in reality the whole image indeed looks very appealing, without being oversaturated. The colors on the Mega 6.3 look duller in comparison, and more washed-out.
Sony one-ups the Mega 6.3's display in another aspect as well, since you can write or doodle on the display of the Z Ultra with pens or even pencils lying around, instead of a dedicated stylus, with superior handwriting recognition.
Interface and functionality
We get Android 4.2.2 on both phones, covered with the respective branded overlays – TouchWiz Nature UX for Samsung, and Socialife for Sony. The interfaces redraw into dedicated landscape modes when you turn the phones sideways, which come pretty handy with such large panels.
Galaxy Mega 6.3 offers the famed multi-windows mode of Samsung, which splits the screen in two parts with adjustable size, where you can run two completely different apps at the same time. On a 6.3” display this multitasking prowess is a really useful tool, whereas the Xperia Z Ultra has a “mock” version of that, with the Small Apps dock appearing when you press the multitasking navigational button. It “floats” a calculator, browser window, notes and several other tools on top of whatever you are doing underneath for added functionality.
Processor and memory
Quad-core Snapdragon 800, clocked at 2.2 GHz, versus a dual-core Snapdragon 400 at 1.7 GHz – just the dry numbers should tell you which one is the speed king here, and it is the Xperia Z Ultra. The handset is so fast that it topped our benchmark results so far. That shows in the everyday interaction with the phone, too, with barely any lag in the interface, instant auto-rotate and landscape redraw, as well as brilliant 3D graphics when you get into gaming mode with the Adreno 330 GPU.
Internet and connectivity
Browsing on these large display panels is one of the activities that ease the pain of carrying the huge devices around, and it is again a better experience on Sony's slab, but not because of the negligibly larger screen size. Besides the better quality of the Z Ultra's display, we also get an extremely fast rendering machine, as you can see in the HTML5 benchmarks above. Panning, scrolling and zooming are buttery smooth and instantaneous on Sony's phone, whereas these actions look a tad “choppy” in comparison on the Mega 6.3.
Sony's phone is the first octaband LTE handset, supporting more bands than any other 4G handsets on the market, including the 2 and 4 that US carriers use to lock phones to their networks. It also features 42.2 Mbit/s HSPA+ pentaband modem for true global phone phone abilities. The Galaxy Mega 6.3 supports European/Asian frequencies with the same maximum download speeds, but it has a hexaband LTE radio only.
Both devices sport Wi-Fi radios, with support for the fastest ac standard, and we also get Bluetooth 4.0 on both, A-GPS, FM Radio and NFC, while Sony's phone adds DLNA streaming as well. MHL ports are present on the Mega 6.3 and the Z Ultra, so you can wire up a TV to the phones with the respective cables.
Camera
Both handsets have 8 MP cameras on the back, but the one on the Z Ultra lacks an LED flash companion. We get plenty of scene and shooting modes in the camera apps, plus a number of color effects thrown in. Sony lets you shoot both stills and videos in HDR mode, and offers much faster camera app startup and shot-to-shot times, especially for HDR photos, compared to Samsung's phone.
Both devices offer a slightly more saturated look than the scene gives in reality, but luckily we didn't spot any glaring exposure or white balance issues. Detail captured is in the normal range for 8 MP shooters..
Video is captured with fluid 30 fps in 1080p resolution from the phones, but the Z Ultra has an added advantage here, sporting a superior HDR mode, which evens out the footage dynamic range, and should be left on at all times.
Multimedia
Rich image editing options can be found built into the grid-style gallery apps on both handsets, and it is pretty handy to work on such large screen canvass. Z Ultra offers the ability to outline for cropping, to annotate and shoot an image via email, all without letting go of a regular pen or pencil.
The music apps offer a number of equalizer presets and sound modes, but the phones sport pretty average loudspeakers, which are strong enough, but not that adamant on quality sound output, no matter which sound enhancement you apply.
Watching videos is what such large handsets are best at, compared to other phones, simply on account of their screen sizes. Both phones support all major video formats out of the box, up to 1080p resolution. On the Xperia Z Ultra, however, such footage will be shown in its beautiful native resolution, plus the superior contrast and antireflectance coating make viewing much better indoors and out, compared to the Mega 6.3.
Call quality

Battery
Galaxy Mega 6.3 has the upper hand in terms of battery capacity, with a 3300 mAh unit compared to the 3000 mAh one in the thinnest Full HD smartphone. It also sports lower resolution display, so in terms of video playback Samsung cites 11 hours, which is much more endurance than Sony's 7 hour claims.
Galaxy Mega 6.3 is quoted for 82 hours of music playback, compared to the whopping 110 hours of the Z Ultra, but Samsung reclaims its endurance superiority in talk times – 17 hours in 3G mode against the still excellent 14 hours for Sony. Xperia Z Ultra clocks in better standby numbers, though – 21 days in 4G mode, versus 16 days for the Mega 6.3.
Conclusion
The Sony Xperia Z Ultra excels in almost every category imaginable before the Galaxy Mega 6.3, save for overall size, camera and earpiece quality somewhat. It has the look and feel of a much more polished, premium and even elegant handset, compared to Samsung's phone, if you can use this word for these giant devices. Sony's handset also has a much better screen, way faster processor, better connectivity options, and is waterproof to boot, negating the swappable battery advantage of the Mega 6.3.
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