Microsoft is in a difficult place with regards to the smartphone market. After delivering a very innovative interface and overall promising platform with Windows Phone 7 in late 2010, the platform stagnated, with mediocre hardware, slow updates, and not much progress in terms of sales. Bringing Nokia on board in 2011 gave Windows Phone a bit of a boost, particularly after the Windows Phone 8 launch with the success of the Lumia 920, but it’s still hard on a lot of levels to recommend a high-end Windows Phone versus the price-competitive iPhone and Android equivalents. But where I’ve long felt that Windows Phone devices make sense is with lower-end hardware.

And in that context, the Nokia Lumia 521 is very interesting. It’s the T-Mobile US version of the Lumia 520, and ships with AWS HSPA+ for just $129 sans contract or subsidy. It’s nearly identical to the 520 save for very minor dimensional differences and T-Mobile branding. AT&T gets the 520 in its original form as part of their GoPhone prepaid lineup for $99.99, no contract. The specsheet reads pretty respectably given the budget—Qualcomm’s MSM8227 SoC with dual-core Krait at 1GHz clocks, Adreno 305 graphics, 512MB RAM, 8GB of onboard NAND plus a micro SD slot, a 4” WVGA IPS panel, and a 5MP camera with an f/2.4 lens. And of course, this being Nokia, you’re assured of a pretty decent design and build. Nokia has always excelled at building durable, inexpensive handsets that didn’t feel cheap, which is one of the things that has propelled them to success in developing markets.

Microsoft’s insistence on keeping user experience consistent between devices as much as possible has led to some budget WP handsets that have been nearly as good as their more expensive brethren, so the potential has always been there, but this is the first time we’ve seen a Windows handset release at the floor-sweeper price point. So naturally, the Lumia 521 is interesting. The promise of a real smartphone at legitimately accessible price points, without the need to tie yourself into a contract or binding agreement of any kind, is fantastic. Tied in with T-Mobile’s BYOD-friendly no contract plans, this is actually a pretty credible handset for the tight of budget. AT&T’s $99 520 is even more ridiculous considering it doesn’t even break the century bill mark.

The only real difference between the 520 and 521 externally is the latter being 4.1mm taller in order to fit the T-Mobile logo at the bottom of the front face (124.0mm for the 521 versus 119.9mm for the international and AT&T versions of the 520). Beyond that, they share the same width, thickness, overall design and construction, and specs.

Physical Comparison
  Nokia Lumia 521 Nokia Lumia 520 Nokia Lumia 920 HTC 8X (International)
Height 124.0 mm (4.88") 119.9 mm (4.72") 130.3 mm (5.13") 132.35 mm (5.21")
Width 64.0 mm (2.52") 64.0 mm (2.52") 70.8 mm (2.79") 66.2 mm (2.61")
Depth 9.9 mm (0.39") 9.9 mm (0.39") 10.7 mm (0.42") 10.12 mm (0.4")
Weight 124 g (4.37 oz) 124 g (4.37 oz) 185 g (6.53 oz) 130 g (4.59 oz)
CPU 1 GHz MSM8227 (Dual Core Krait) 1 GHz MSM8227 (Dual Core Krait) 1.5 GHz Qualcomm MSM8960 (Dual Core Krait) 1.5 GHz Qualcomm MSM8260A (Dual Core Krait)
GPU Adreno 305 Adreno 305 Adreno 225 Adreno 225
NAND 8 GB NAND with microSD slot 8 GB NAND with with microSD slot 32 GB NAND 16 GB NAND
Camera 5.0 MP, f/2.4 lens 5.0 MP, f/2.4 lens 8.7 MP, dual LED Flash + 1.3 MP front facing 8 MP, LED Flash + 2.1 MP front facing
Screen 4" 800x480 LED backlit IPS LCD 4" 800x480 LED backlit IPS LCD 4.5" 1280 x 768 IPS 4.3" 1280 x 720 SLCD2
Battery Removable 5.29 Whr Removable 5.29 Whr Internal 7.4 Whr Internal 6.8 Whr

The 521 speclist hits a few major points that I’d consider pretty important in delivering a satisfactory mobile experience—IPS display, fast lens, a reasonably powerful SoC, expandable storage (in lieu of a sizeable amount of onboard NAND). Notable omissions include DC-HSPA+, a front-facing camera, a flash module, NFC, and wireless charging, but on paper it would seem that Nokia didn’t cut too many corners in their pursuit of a bargain smartphone.

The 521 is a good looking phone, with a wraparound battery cover that fits around the main body of the phone. Conceptually, it’s pretty similar to how the HTC 8X is put together, except that the entire thing is meant to come apart, giving users access to the battery as well as the micro SIM and micro SD card slots. Nokia has used this construction before with the 820 and 620, so it was no surprise to see it on the 520 and 521. The design language is very Nokia, with an organically contoured back and an elegant simplicity to the overall aesthetic. It manages to be understated without feeling plain, which Nokia has gotten very good at. It’s really not much of a question, but Nokia’s team of designers and engineers is truly world class—Nokia is the only company with the hardware level design chops to match Apple (though recently, HTC and Microsoft have shown promise as well).

In hand feel is actually really great—the 521 isn’t the thinnest handset in the world, but the 4” display gives it a very compact frame that’s a nice change from the 4.5-5” flagships of late. The ergonomics of the curved back are good, the phone just fits into your hand very well. The phone is light, but not unnaturally so—at 125g, it’s pretty reasonable for the size. It’s a bit odd to look at the 521 next to the brick-like Lumia 920, which has a 4.5” display and weighs a kind of ridiculous 185g; there’s very little family resemblance between the two. (It’s actually even more shocking to look at the 920 versus the svelteness of the same design language on the Lumia 800 and MeeGo-based N9, but that’s a different matter.)

The battery cover is a matte polycarbonate shell, in this case white. The 520 battery cover is offered with five different color shells—the classic Nokia cyan, yellow, red, black, and white—though due to the height difference, those shells won’t fit the 521 (I was heartbroken when I discovered this). There has been no word on any colored shells being offered for the 521 thus far, so I wouldn’t hold my breath.

The shell has the glossy black buttons attached to it, laid out in the traditional Lumia style of volume, power, and camera all on the left side of the handset. I’ve actually never really liked the setup in the past, because the flush chrome buttons on the side of the Lumia 800 and 900 were easy to mix up on accident. This got fixed to some degree with the 920, which added more space between the buttons, but the 521 goes a step further with generously-sized buttons that stick out from the sides by about a millimeter. It’s very easy to grab the right one by feel, and the buttons actuate with a positive click. There’s more travel to the buttons, which is nice and refreshingly old-school. The camera button, particularly, is awesome—it’s rare to find good two-stage camera buttons these days; this is probably the best I’ve seen in a couple of years. It sticks out a bit further than the other buttons and offers good feedback for both clicks.

The battery cover peels off the back of the phone pretty easily, exposing the sparse guts of the phone. There’s a hole in the shell for the camera lens, with some rubber padding in various places (around the camera module, speaker, and battery) to quell vibrations and offer a bit of protection. The interior of the phone is shockingly plain, with nary an extra screw, sticker, or plastic feature in sight. Penny pinching also probably led to the odd SIM-card insertion method—it isn’t spring loaded (neither is the microSD card slot), so you need to push the SIM card out from the plastic cutout. It’s not a problem, but it’s just evident that places like this are where every last cent had to be saved to hit the $129 price point.

Overall, the design is very pleasant. It’s clearly not high-end hardware, but it doesn’t try to be. It’s very solidly a budget handset, but a few cuts above what you get from Huawei and the like at this price point. This is Nokia at its best—focusing their hardware prowess on quality devices that don’t break the bank. The smartphone is a niche that has yet to be fully tapped in the emerging world, and offering a compelling handset like the 520 is key to Nokia’s future.

Battery Life
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  • Gunbuster - Thursday, August 8, 2013 - link

    This may be down to confusion on how to "re-open" an app. If you long press the back arrow capacitive button you get the running apps and have almost no lag. If you hit windows and select the live tile for an already open app it kills that app and loads it again fresh. I don't really agree with that design choice as it seems to confuse most users.
  • Myrandex - Thursday, August 8, 2013 - link

    You can hit the start button, go back to the homescreen, and select an app and still get fast refresh. It still needs to be recently run though. I do this frequently.
  • Collin5 - Thursday, August 8, 2013 - link

    It seems unlikely that Vivek doesn't know about the task switcher, but who knows?

    However, not all apps are reloaded when relaunched from a live tile. Some apps support a feature called "fast resume", which allows them to resume instantly, even when reactivated via a live tile. Unfortunately, apps must support this feature explicitly, and the fact that not all do leads to behavioural inconsistencies, which is why I agree with you (and Vivek) that at least this aspect of WP multitasking is poorly designed. Fast resume support must be mandatory.
  • althaz - Thursday, August 8, 2013 - link

    This is the same behaviour as iPhone and Android (disclaimer: I haven't used an iPhone for over a year).
  • Azurael - Friday, August 9, 2013 - link

    I was about to say I very rarely encounter this issue on my phone, but then I remembered that the Nexus 4 has 2GB of RAM so it's not exactly an Apples to Apples comparison. I usually have to run 10+ apps to start seeing the reload on taskswitch behaviour...

    Android, however, doesn't relaunch apps if you select them from the home screen - the behaviour is exactly the same (and instant, if the app has already been launched) as using the task switcher.

    I guess the biggest difference in reality is that - at least in theory - Android 4.x devices should have a task switcher button, which is a lot more obvious to the user than holding back. Having said that, a lot of 'three button' Android devices are stuck with an obsolete and practically useless menu button instead due to pigheaded device manufacturers ignoring Google's UI guidelines, and then we're stuck with the same behaviour but holding the home button instead...
  • Seurahepo - Friday, August 9, 2013 - link

    No, it is NOT. iPhone apps are not "reactivated" when launched from the home screen. No matter how the user comes back to an app it is instant (provided it has been recently used and it is still in memory).

    Could some of you WP fans explain to me *why* the apps are slowly restarted from the live titles? Blaming the users are using the phone wrong is kind of defensive, seems like there is a big UI/UX problem for no apparent reason.
  • althaz - Thursday, August 8, 2013 - link

    This is entirely dependent on the app devs actually. Most do choose to reload the app if you go back to the start screen and then load the app.
  • Impulses - Friday, August 9, 2013 - link

    That's madness... Because people who are new to smartphones tend to ignore quicker methods of multi-tasking and usually resort to tapping home and reopening apps from shortcuts/tiles/all apps...

    At least that's what I've observed among older clients and family members of mine, regardless of OS. If they're on an iPhone they'll seldom double tap home (if they even know about it) and on Android they flat out ignore the app switching button (a decision reinforced by HTC's choice to eliminate it I imagine, or hide it behind multiple home taps rather).
  • toraji - Friday, August 9, 2013 - link

    good points collin
  • mi1stormilst - Thursday, August 8, 2013 - link

    I just picked up one on Craigs List for $115 new in the box (from HSN deal). It came with a cheap pair of headphones, car charger and a soft case. I charged it up and went to the t-mobile website to sign up for the $30.00 a month pre-paid plan (100 mins of talk time, unlimited text and data). I am using it as a home phone and a phone for my two youngest kids to share when they are away from home. We all like the physical phone, camera is decent (needs a flash) and the interface is clean and fun. The speed of the OS is mostly snappy the data connection is faster than expected. Battery life is more than acceptable if you are not playing and staring at it all day. I only have two complaints: 1.) The OS does seem to slow down occasionally in different screens especially when trying to type in the keyboard. 2.) It is not clear how to close down apps or navigate in the Browser. I am satisfied with the phone overall and have recommended it to budget minded folks.

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