CNET logo Why You Can Trust CNET

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. How we test phones

Samsung Galaxy S III U.S. Cellular review: Samsung Galaxy S III U.S. Cellular

Samsung's flagship Android 4.0 handset is just the device this regional carrier needs to promote its new 4G LTE network.

Jessica Dolcourt Senior Director, Commerce & Content Operations
Jessica Dolcourt is a passionate content strategist and veteran leader of CNET coverage. As Senior Director of Commerce & Content Operations, she leads a number of teams, including Commerce, How-To and Performance Optimization. Her CNET career began in 2006, testing desktop and mobile software for Download.com and CNET, including the first iPhone and Android apps and operating systems. She continued to review, report on and write a wide range of commentary and analysis on all things phones, with an emphasis on iPhone and Samsung. Jessica was one of the first people in the world to test, review and report on foldable phones and 5G wireless speeds. Jessica began leading CNET's How-To section for tips and FAQs in 2019, guiding coverage of topics ranging from personal finance to phones and home. She holds an MA with Distinction from the University of Warwick (UK).
Expertise Content strategy | Team leadership | Audience engagement | Tips and FAQs | iPhone | Samsung | Android | iOS
Jessica Dolcourt
20 min read
This review of U.S. Cellular's Samsung Galaxy S3 differs from versions on other carriers primarily in the evaluation of apps, call quality, and network performance.

Editors' note: This review of U.S. Cellular's Samsung Galaxy S3 varies from the review of the T-Mobile, AT&T, Sprint, and Verizon models in the areas of apps, call quality, and data performance.


Samsung Galaxy S III U.S. Cellular

The Good

The <b>Samsung Galaxy S3</b> comes fully loaded with Android 4.0 Ice Cream Sandwich, 4G LTE capability, a zippy dual-core processor, and a strong 8-megapixel camera. S Beam is an excellent software enhancement, and the handset's price is right.

The Bad

The Galaxy S3's screen is too dim, and Samsung's Siri competitor, S Voice, disappointed us. You can only roam at 3G speeds outside of U.S. Cellular's home network.

The Bottom Line

Pumped with high-performing hardware and creative software features, the Samsung Galaxy S3 is an excellent, top-end phone that's neck and neck with the HTC One X.

With the Samsung Galaxy S III (S3), Samsung has done it again. For the third consecutive year, its flagship Galaxy phone is a tidy package of top-flight specs, approachable design, steady performance, and compelling pricing. Starting its U.S. sales debut with five carriers -- Verizon, AT&T, Sprint, T-Mobile, and U.S. Cellular -- makes this smartphone nearly ubiquitous. Samsung's aggressive distribution strategy gives the Galaxy S3 a leg up on its chief Android rival, the HTC One X, but it fails to sweep HTC's finest, and Apple fans will scoff at S Voice, Samsung's imitation Siri.

That isn't to say that the Galaxy S3 does not impress. From the outside in, it has a large, vibrant HD display; Android 4.0 Ice Cream Sandwich; a sharp 8-megapixel camera; 4G LTE or HSPA+ support; a zippy dual-core processor; and tons of internal memory and 2GB RAM. The $199.99 price tag for the 16GB version is highly competitive, and that, along with its carrier spread, makes the GS3 priced to sell.

Some have slammed Samsung for formulaic specs and design, and to some extent, the critics are correct. Samsung isn't setting hardware standards with new creations, and the GS3's software additions, while interesting and useful, mostly build off existing Android capabilities. Regardless, Samsung has continued to produce stronger subsequent models than its first Galaxy S home run. There's a reason why the Galaxy S II sold over 50 million units worldwide, and why the GS3's preorder sales smashed U.K. records. Samsung clearly has its formula worked out for making higher-end features familiar, expected, and easily within reach -- and in the all-around excellent Galaxy S3, it shows.

Samsung Galaxy S3 lands on U.S. Cellular (pictures)

See all photos

Pricing and availability
I don't usually start a review with pricing information, but in this case, it's worth the bird's-eye view of which carrier offers which capacity of each color when, and for how much.

AT&T Samsung Galaxy S3 ($199.99): 4G LTE in 39 markets; simultaneous voice and data; 16GB model available in blue, white, and, exclusively, red

Sprint Samsung Galaxy S3 (16GB, $199.99; 32GB, $249): 3G now, 4G LTE when Sprint launches its LTE network; Google Wallet, unlimited data option; available in 16GB (blue, white) and 32GB (blue, white) models

T-Mobile Samsung Galaxy S3 (16GB, $229.99, $279.99 [Value plan]; 32GB, $279.99, 329.99 [Classic plan]): HSPA+ 42; simultaneous voice and data; available in 16GB (blue, white) and 32GB (blue, white) models U.S. Cellular Samsung Galaxy S3 (16GB and 32GB, price TBD): 4G LTE in 6 markets, 3G elsewhere; eligible for carrier points; available in 16GB (blue, white) and 32GB (white) models Verizon Samsung Galaxy S III (16GB, $199.99; 32GB, $249): 4G LTE, 258 markets; eventual global data roaming, voice/data; available in 16GB (blue, white) and 32GB (blue, white) models

This is a review of the 16GB version of U.S. Cellular's GS3 in glossy white.

It won't wow you with neon colors or evocative industrial design; it doesn't have the sharpest screen on the market; and its body isn't fashioned from ceramic, glass, or micro-arc oxidized aluminum. That said, the Galaxy S3 is about the nicest plastic phone I've ever seen. Likely tired of hearing complaints about how cheap-feeling Samsung phones can be, the company seems to have decided to focus instead on making the contours more premium -- without giving up its light, inexpensive, and shatterproof material of choice.

Samsung Galaxy S III
The Samsung Galaxy S3 looks and feels smooth, glossy, and far more luxe than previous Galaxy handsets. Josh Miller/CNET

Peer closely at the phone, which comes in ceramic white, pebble blue, and later a red shade exclusive to AT&T, and you'll see that Samsung has rounded the edges and corners to create smooth spines and trim pieces all around. The phone designers also intentionally arranged the backing to give the phone more of a unibody feel.

Samsung doesn't shy away from high gloss and sheen in either white or blue models and, somehow, it all works. The pebble-blue variety's spines are a lighter blue than its steel gray-blue backing, and I like the brushed-metal grain to its uncompromisingly plastic finish. In addition, the phone has felt good in my hand every time I've picked it up since CTIA. It's slick and touchable, and seems to warm to the touch, which makes it feel like it's conforming to your grip. Though smooth, the GS3 isn't slippery, and although fairly light (at 4.7 ounces, just a tad heavier than the HTC One X), it doesn't feel like it's missing a battery or other essential components. The handset's highly reflective surfaces are its most major design flaw.

When it comes to size, the GS3 is a big device. At 5.4 inches tall and 2.8 inches wide, it's slightly larger and thicker than the Samsung Galaxy Nexus. Samsung seems to enjoy pushing the envelope when it comes to creating smartphone displays that border on minitablet territory (the 5.3-inch Galaxy Note even became a cult hit, with about 7 million global sales). Yet, the handset's slim 0.34-inch width, contoured sides, and glossy coating add up to that comfortable handhold.

My hands are fairly small, so I passed the phone around to see what others thought, regardless of their personal phone choice. Most initially found the GS3 large, but warmed up to it as they played around. Those with smaller hands than mine generally thought it too big. Almost all of them commented on the light weight. My colleagues also stuck the GS3 in front, back, shirt, and jacket pockets; everyone found a way they said they'd carry it (which really only proves that CNET editors are a resourceful bunch).

Samsung Galaxy S III
Press and hold the GS3's home button to surface your recent apps. Double-press to launch S Voice. Josh Miller/CNET

Above the screen are the proximity and ambient light sensors, the indicator LED, and a 1.9-megapixel front-facing camera. Below it is a physical home button, which Samsung managed to keep in this handset, as opposed to the typical soft-touch navigation buttons we often see in Android phones. In general, I can get behind this kind of button, but the GS3's is slightly less comfy in its squashed and narrow form than if it were a larger rectangle or a square. Flanking this button are the back key and the menu key, which fade after a few seconds of use. It's interesting that Samsung kept its menu button rather than the default recent-apps tab in Ice Cream Sandwich. You can still view recent applications by holding down the Home button.

On the right spine is the power button, and on the left you'll find the volume rocker. You'll charge through a Micro-USB slot on the bottom, and listen to audio through the 3.5mm headset jack up top. The 8-megapixel camera lens and flash are on the rear, with the microSD card slot and Near-Field Communication (NFC)-capable battery behind the back cover. The Galaxy S3 takes a micro-SIM card.

All about the screen: In terms of screen size, the Galaxy S3's 4.8-inch HD Super AMOLED display (with a 1,280x720-pixel resolution) fits right between the Galaxy Nexus (4.65 inches) and the Galaxy Note (5.3 inches), both of them honkers on their own. It's almost identical to the HTC One X (4.7 inches). How much you like the size depends on your preference for large-screen phones. If you like 'em on the smaller side, you'll find this excessive. If you enjoy having more screen real estate for reading and watching videos, you'll likely approve.

Samsung Galaxy S3
The HD Super AMOLED screen on the Galaxy S3 (center) was dimmer beside those of other top smartphones, the HTC One X (top) and iPhone 4S (bottom). Josh Miller/CNET

Samsung's new flagship phone is one of the first handsets to use Corning's Gorilla Glass 2, a thinner, lighter, more responsive cover glass material that the two companies also say lets colors shine brighter. I definitely noticed the screen's sensitivity; at times I barely had to brush the display for a response. Colors looked bright and vibrant with the phone in a dark setting, but slide to full brightness and the screen sometimes seemed dark, especially when compared with other phones at full throttle.

Like typical AMOLED displays, the GS3 overdoes it on the greens, which stand out more than on phones with LCD screens, or when you view photos you took yourself. I downloaded a high-res image with varying contrasts and colors on five phones, also at peak brightness -- the GS3, Galaxy Nexus, Galaxy Note, iPhone 4S, and HTC One X. The Galaxy Note's resolution was a little looser than that of the other four because of its lower pixel density. The GS3 showed a much dimmer picture than the Galaxy Nexus did. Colors on the HTC One X and iPhone 4S were bright and looked truer to life. Blacks looked blacker on the Nexus' AMOLED screen, but there was far more detail throughout the images on the One X and iPhone 4S, which both use LCD screens with in-plane switching (IPS.) From there, quality was a tossup, with some features of the image looking better on the iPhone, and some looking better on the One X.

Watch this: Samsung's Galaxy S III Unboxing at Always On

Don't get me wrong -- the GS3's screen is still lovely when you aren't peering at it side by side with another screen, but the comparative image darkness is a little disappointing, and was especially noticeable in my sunny-day photo and video shoots. Part of the screen dimness problem is that some apps, like the browser, were actually less bright by default. Even when I changed system settings to full blast, the browser remained dimmer until I changed its individual brightness setting. In general, I appreciate Samsung's power-saving checks and balances, but needing to look for settings throughout the phone was confusing.

Interface and OS
Android 4.0 Ice Cream Sandwich looks great on the GS3, especially because Samsung used a lighter hand with its TouchWiz interface than on previous versions. That said, Samsung hasn't fully adopted all of Google's visual cues, like the ICS menu (I personally miss this interface touch). With TouchWiz, Samsung is able to add things like gestures and systems control access in the notifications pull-down. There are also the unique additions that Samsung tacked on to Android Beam.

Samsung Galaxy S3
Android Beam gets a boost in S Beam, which can share videos and photos with a tap. Josh Miller/CNET

Not every one of the GS3's special additions is essential, and some, like sharing content through AllShare Play and GroupCast, are unnecessarily complicated to set up and use. While Samsung deserves kudos for brainstorming and implementing these features, customers will care more about overall camera performance than whether they can tag friends' faces in photos.

S Beam: Built on top of Android Beam for Ice Cream Sandwich, the Samsung-only S Beam wields NFC and Wi-Fi Direct to "beam" larger-file photos, videos, and documents -- that's in addition to Android Beam's capability of sharing URLs, maps, and contact information. Behind the scenes, NFC initiates the handshake, and the Wi-Fi Direct protocol takes over for larger files. The combination isn't groundbreaking, perhaps, but Samsung deserves credit for packing it up in one seamless action. As with Android Beam, you won't have to do more than press the backs of the phones together, confirm the beam, and pull the phones apart. The larger the file, the longer it usually takes for the transfer magic to happen.

S Beam worked flawlessly every time I tried it. Samsung really does get a high-five for this addition, which goes beyond simple cleverness to actual usefulness.

S Voice: And then there's S Voice. Samsung's answer to Apple's Siri, S Voice is a personal assistant that plumps up Android's built-in Voice Actions into the more personal format that Apple popularized with Siri. Vlingo powers S Voice on the listening and interpretation front (Siri uses Nuance), and draws answers from databases like Wolfram Alpha. You launch S Voice by double-pressing the home button, and can wake up S Voice in between commands by saying, "Hello, Galaxy" (this is optional and drains the battery faster).

Samsung Galaxy S3
You can do a lot with S Voice (left), but only if it understands you (right). Jessica Dolcourt/CNET

S Voice can launch apps and turn-by-turn navigation; switch into driving mode; voice-dial; tweet; get the weather; compose a memo; search contacts; and schedule tasks. It can also take a photo, place and answer calls, search the Web, adjust the volume, send e-mail and text messages, record voices, and launch the native music player. It ties into Android 4.0's lock screen security, so you can use your voice to unlock the phone. As a bonus, you can program four of your own voice commands to open the camera, record your voice, and check for missed calls and messages.

S Voice sounds great in theory, but it didn't work well. Sometimes it didn't work at all. Throughout my testing period, I used S Voice extensively, asking the phone to perform the full range of tasks. Sometimes it delivered what I wanted immediately, like driving directions or turning Wi-Fi on and off. Other times, it must have stuffed cotton in its digital ears and repeatedly garbled or blanked on what I wanted. My favorite was when it knew exactly what I said, repeated my command (you can choose voice feedback in addition to text), and then did nothing. There was also the time that S Voice stalled on deleting an alarm, then ignored my subsequent request to finish the first one.

Samsung Galaxy S3
S Voice is Samsung's garbled answer to Apple's Siri. Josh Miller/CNET

On the whole, S Voice is more rigid than Siri about syntax and the software takes a while to process. Unless I'm driving or otherwise hands-free, I find it faster and less frustrating to set an alarm myself, or turn on driving directions before engaging the ignition. Siri also has its share of slowness and interpretation issues, but it's performed more consistently for me in my tests thus far. Stay tuned for a more detailed comparison with Siri, and in the meantime check out our CNET UK editor's test, in which S Voice clearly won only 1 out of 15 voice test scenarios, a poor showing that makes S Voice seem more like a beta product than a Siri substitute. I'll update this review with a similar showdown.

Sharing software: Multimedia sharing is a Galaxy S3 emphasis, with four main ways to share your stuff through different means, like DLNA and Wi-Fi Direct protocols.

AllShare Play uses DLNA to share multimedia content across your Samsung TVs, tablets, and phones, so you can play a video you shot on your phone on the TV, and do things like control the volume from your handset. A Web storage element lets you access content on your other devices by tapping into a third-party client, SugarSync.

Samsung Galaxy S3
Face recognition software prompts you to tag yourself and your friends, even on photos taken with the front-facing camera, like this one. Josh Miller/CNET

GroupCast, which you can use as a presentation service, uses AllShare Play. It takes seven steps (including a password and PIN number) to set up the share, but once you do, you can share a folder -- like slides or photos -- across all phones you've invited into the GroupCast. Any device can control the screens, and annotate with pen strokes that fade after a few seconds. Samsung should let the GroupCast leader lock it down.

Buddy Photo Share is a neat optional in-camera feature that can e-mail or text a freshly shot photo to the person you tag in it. Photos show up in a "received" folder in the recipient's gallery.

ShareShot is a camera shooting mode that uses Wi-Fi Direct in the background to automatically send photos to your friends as you shoot them, instead of e-mailing them after the fact. Multiple people can get in on the deal -- so long as they're within about 100 yards, about the length of a football field. Photos also appear in the gallery. You lose ShareShot when you switch shooting modes.

My problem with these tools is that some of them have unintuitive and disjointed user experiences. It isn't always obvious how to get to a feature, how to sign others up, and how to find your shared content afterward.

Watch this: Samsung Galaxy S3 Torture Test at Always On

An Android Ice Cream Sandwich phone through and through, the GS3 is fully loaded with all the Google goodies, and then some. There are the Google apps and services, like Gmail, Maps with turn-by-turn voice navigation, a music player, and YouTube, to name just a few. Wi-Fi, GPS, Wi-Fi Direct, and Bluetooth 4.0 are other communication features, along with NFC (which powers stuff you can do with TecTiles and Google Wallet).

Although you get only one keyboard option -- Samsung's -- you can get Swype-like behavior with T9 Trace, which is enabled by default. It seems to contain the same highs and lows, depending on your typing style. You can separately also download Swype.

Gesture controls have always been one way that Samsung differentiates its phones, and for motion-control lovers, the GS3 has more than ever. Most are switched off by default, and if you want them, you have to hunt through various settings; most are in the Motion settings submenu. Some notables include flipping over the phone to mute a call, lifting the phone to your face while texting to initiate a call instead, and pressing the lock screen while turning the phone 90 degrees to open the camera (that last is a nice touch, and isn't hard, but honestly, a hardware camera button just seems easier).

Another neat Samsung setting is SmartStay, a program that periodically scans for your pupils from the front-facing camera. If it "sees" you looking, it won't dim the screen, which is helpful when you're reading, watching videos, or studying a map. It works at intervals before your screen timeout kicks in. I also like the capability to customize which icons go on the GS3's lock screen. You can choose among such favorites as the dialer, messaging, the camera, and maps.

Samsung Galaxy S3
Samsung lets you perform a pile of functions with various gestures. It takes a little time to learn, but you'll find some you latch onto. Jessica Dolcourt/CNET

The U.S. Cellular GS3 comes with the bare minimum of preloaded apps, a nice change from the piled-in software you may or may not want in rival carrier offerings. Samsung's branded apps include the aforementioned AllShare Play, Kies Air for Wi-Fi sharing across devices, the games, music, and media hubs, and additional Samsung apps. It also has S Memo, and S Suggest (an apps collection). There's no ChatOn social networking and IM app in this model (you can add all the apps you want from the Google Play store,) but there is Dropbox, and you get an extended offer of 50GB free online storage for two years. A VPN client is a shortcut for connecting to a corporate virtual network.

Camera and video: Samsung has used some excellent 8-megapixel cameras in the Samsung Galaxy S II phones, and I'm happy to report that this 8-megapixel camera lens, with backlit sensor and LED flash, is worthy of a flagship phone. The GS3 has a lot of software extras, which I'll get to, but before playing around with modes and effects, I wanted to see how well the camera performed on automatic settings.

For the most part, photos largely emerged with sharp edges and plenty of color. The camera didn't get everything right -- there were some problems with white balance in indoor shots, and shadows in outdoor shots, and photos of sweeping landscapes were less in focus than close-ups. As advertised, the GS3 has virtually zero shutter lag; in fact, it processed photos a hair faster than the One X.

Samsung Galaxy S3
Samsung continues its camera home run with the Galaxy S III's 8-megapixel shooter. Josh Miller/CNET

I compared about 20 indoor, outdoor, day, and night shots taken with the GS3, the One X, and the iPhone 4S, phones that CNET has lauded for their excellent smartphone cameras (you'll find 10 images from each in this camera shoot-out.) I took the same shots from the same positions, focused on the same areas, and resized and cropped photos the same way. The results were a toss-up; no one phone camera routinely outperformed the others on close-ups, fully blown-up images, color temperature, and focus, but I was able to take excellent shots with all three. In some photos, the GS3's colors were brighter, more defined, and more balanced. In other photos, the One X best captured shadows, color, and definition; and in others still, the iPhone 4S bested the other two.

Galaxy S3
The Galaxy S3 did a bang-up job of capturing these flowers in the full morning summer sun. Jessica Dolcourt/CNET

(You can compare standard studio shots in this smartphone photo gallery.)

Samsung's extra software features are also helpful and easy to use. There's face-tagging when the software recognizes faces, and HDR (which is already in the iPhone 4S and the One X) makes an appearance. Burst mode is also new to the GS3. You can either take 20 frames in quick succession, or turn on Best Shot, which lets you choose your favorites of eight burst shots. The software looks for logic like open eyes and crescent smiles when suggesting its favorite. There's also a new cartoon mode, and it has the aforementioned ShareShot and Buddy photo share modes. I do really like Samsung's effort to deeply integrate the camera with the address book in an effort to make sharing photos even more seamless.

Galaxy S III
What happened here, Galaxy S3? It looks like the white paper threw off the white balance. This was the best of 3 successive shots. Jessica Dolcourt/CNET

Tagging and sharing aside (which I think are cool and fairly useful), I have to give the One X the nod for the smoother camera experience overall. The editing tools and toggling between the gallery and camera were both more obvious on the One X.

Samsung Galaxy S3
The Samsung Galaxy S3 oversaturates the green grass and yellow tree moss. Josh Long/CNET

Photo quality from the front-facing camera was also pretty good for the purposes of video chats and vanity shots, though of course it didn't compare to the rear-facing camera.

As a reminder, the U.S. Galaxy S3 comes in 16GB and 32GB versions, and can take up to 64GB in external storage.

Galaxy S3
Free ice cream treats is a moment worth capturing. Notice that the words on the truck are in focus, but the girl's arm is not. Jessica Dolcourt/CNET

Video: Video quality was very strong. Audio came through loudly and clearly, colors were crisp, and streamed and self-shot videos played back smoothly, without any jerking. The same goes for downloaded videos, though a more brightly lit screen would have been useful at times, especially when playing darker films like "Sherlock Holmes."

Samsung Galaxy S3
Pop Up Player is a new feature that floats a thumbnail video in 720p over any screen. Now, that's what I call multitasking. Josh Miller/CNET

There's a small feature related to video that's pretty impressive nonetheless. When you launch a video from the gallery you can pop it out to a floating thumbnail. You can then drag that thumbnail around the screen while you do other things like responding to a text. The video quality is good

(720p, in fact), and the videos pick up where they left off. I'm still waiting to find a natural impetus to use it, though.

Watch this: Putting the Samsung Galaxy S III video camera to the test

Did you know that you can capture video on the 1.9-megapixel front-facing camera, and it plays back in 720p HD quality? The video quality was better than expected, but perhaps a bit too close for comfort. Shooting this way would easily let solo videographers set and check the scene while they shoot.

Call quality: I tested the Samsung Galaxy S3 on U.S. Cellular's roaming network in San Francisco. A dual-band CDMA phone (800/1,900MHz), the GS3 also supports LTE, but not while roaming. Calls didn't sound quite as good on the U.S. Cellular version of this phone as they did on other networks. The background was clear, but voices sounded slightly sharper than I knew them to be in real life. At points, the audio sounded raspy, and bobbled in and out. While I was always tuned into the conversation, the discrepancies were noticeable.

As with the other GS3 handsets, maximum volume or just under was a fine audio level in a mostly quiet office location, but is far too soft for louder outdoor environments, like windy San Francisco streets, and also too quiet when my office started getting noisy. Luckily, the phone comes with extra listening settings, like an in-call equalizer and an onscreen volume-boost button, which you can press to dramatically increase your in-ear volume. That button mitigated my volume complaints.

On his end, my chief testing companion noted that I sounded a little unnatural and my voice was distorted at the higher frequencies. I also sounded slightly muffled, but comfortably loud. The background remained clear throughout.

Samsung Galaxy S3 call quality sample (U.S. Cellular) Listen now:

The ever-problematic speakerphone feature was a winner on most of the GS3 phones, as far as these things go. Unfortunately, it wasn't quite as good on the U.S. Cellular version we tested (while roaming.) On my end, voices sounded a little thicker and fuzzy, but still nice and clear. Volume was strong, so I dialed it down from maximum. The worst trait was the buzzing I felt in my hand every time my testing partner spoke, even with the phone volume turned to low.

On the other end of the line, my testing partner noted that volume sounded louder and said that I was harder to understand. The phone seemed to enhance the echo that typically accompanies speakerphones, so it's more echoey than usual. Aside from the echo, voice quality between speakerphone and normal didn't really change when switching back and forth.

Data speeds: At the time of writing, U.S. Cellular had recently launched its 4G LTE network in select cities in Iowa, Maine, North Carolina, Oklahoma, Texas, and Wisconsin, populations that cover 25 percent of the carrier's customers. However, the phone roams on 3G, so here in San Francisco, it was impossible to test U.S. Cellular's 4G speeds. I realize it puts the carrier at a disadvantage to be tested at 3G speeds, so if you reside in U.S. Cellular's 4G network footprint, expect better results.

I used the Speedtest.net diagnostic app to test in downtown San Francisco. 3G speeds were predictably on the lower end of the speed scale. The diagnostic app Speedtest.net reached highs of less than 0.5Mbps down and a high of .87Mbps up. Speeds were also notably slower in real-life tests. It took over 30 seconds to load CNET's mobile site and more than a minute to load the full desktop site (Verizon's 4G network can load this page in 10 seconds.) It took 4 and a half minutes to download 30 percent of the Rovio game Amazing Alex (21.89MB) over 3G. In contrast, Verizon's 4G network downloaded and installed the entire app in 65 seconds.

Samsung Galaxy S III, GS3, Galaxy S3
U.S. Cellular's regional network has 4G LTE; outside the home network, it roams on 3G (pictured.) Screenshot by Jessica Dolcourt/CNET

Data performance on the GS3 will vary by carrier. AT&T and Verizon both have 4G LTE, T-Mobile has its HSPA+, Sprint's version will ride 3G until LTE rolls out, and U.S. Cellular has a nascent, limited LTE network. Verizon's and AT&T's network speeds surpassed T-Mobile's when at their peak, but even T-Mobile's was still swift.

Internal performance and battery: Like the HTC One X, the Galaxy S3 has a 1.5GHz dual-core Qualcomm Snapdragon S4 processor, which Qualcomm boasts is its fastest yet. For the most part, I had few complaints about the GS3's internal performance. I did, however notice that the phone took a little longer to switch tasks and open apps than I thought it should. Sure enough, when I held the phone phones side by side, the HTC One X routinely opened and closed things faster: the camera, Gmail, settings, maps, the gallery, and so on. The phones unlocked at about the same rate.

The GS3 has a 2,100mAh battery, which is large, but not atypical for such a big phone (the Note's, for instance, is 2,500mAh.) I've been testing the GS3 mercilessly, with the screen on full brightness for extended periods of time, with frequent downloads and streams, and plenty of S Voice activity. So while I'll need to continue testing the battery performance under more "normal" circumstances, I get the sense that the battery life can hold up to heavy use. However, you should expect to recharge your phone daily, as you would with most other smartphones.

For all its battery-consuming features, the GS3 also contains power-saving options in various settings throughout the phone -- check the main settings menu and submenus, and also settings menus by app, for ways to cut back.

With its combination of form and function, the Samsung Galaxy S3 excels where it counts, and at a price that matches the features. However, by many measures, the Galaxy S III isn't the top Android phone on the market. HTC's One X has the brighter, more detailed screen, the sturdier build quality, and the extras, like Beats Audio, that consistently work. In addition, Samsung's S Voice repeatedly blunders in understanding and executing on tasks, both here in the U.S. and in the U.K. On the other hand, the GS3 has an excellent camera, expandable memory (which the One X doesn't have), and double the RAM. S Beam sharing over Wi-Fi Direct is a smash hit, and Samsung has beefed up its camera software. With no One X in the picture, the GS3 would be the unquestionable Android king.

And then there's the looming spectre of the iPhone 5, which is expected to land in fall with 4G LTE support, a 4-inch Retina Display, a faster processor, and a more evolved camera. Hype alone will make some hold off on buying the GS3.

Samsung's effort here is clear; the company is trying hard and taking risks. Evolving Voice Actions to S Voice was no mean feat, and I hope the programmers work out the kinks in the next update. I also hope that Samsung will offer a more satisfying screen that stands up to the competition. Would I recommend buying the Samsung Galaxy S3? Absolutely, and it is without a doubt my favorite Samsung phone available today. Yet I slightly prefer the One X for AT&T subscribers, and I wouldn't recommend the GS3 to iPhone fans who prize the crystal-clear Retina Display and Siri.


Samsung Galaxy S III U.S. Cellular

Score Breakdown

Design 9Features 8Performance 8