If you've been sitting on the fence about making the switch to Windows Phone 7, the just-released Lumia 900 could prod you to make the leap over. This stylish, well-engineered phone shows off the strengths of the Windows Phone platform on a bright, crisp 4.3-in. AMOLED screen with a high-bandwidth LTE connection.
And although the Lumia 900's internal specs aren't that impressive -- and despite the low price point ($99 with a two-year contract at AT&T) -- it is the first phone that can compete against an iPhone or top-end Android phone because of its combination of affordability and features.
A beautifully designed phone
Let's start off with the design. This is a flat-out beautiful phone. Made of a single piece of molded polyurethane plastic, it's sturdy, scratch-resistant and sleek with a matte finish. It comes in black (the color of the test unit I tried), white and eye-popping cyan. The phone is thin with rounded edges and the plastic has a soft feel to it, so that you'll want to pick it up just to hold it.
The beautiful 4.3-in. AMOLED display is made of Gorilla Glass and sports an 800-x-480-pixel resolution. Colors are bright, text is crisp and easy to read, and it shows off Windows Phone's frequently used white text on black backgrounds to their best effect.
It has an 8-megapixel rear-facing camera with a Carl Zeiss lens, and a 1-megapixel front-facing camera you'll mainly use for video chats. I can't say that I was overwhelmed by the camera; it seemed no better or worse than those in other phones with similar camera specs.
Performance and 4G
If you were to measure a phone by its internal specs only, you might not be impressed by the Lumia 900. In a market where smartphones are now commonly supplied with dual-core CPUs (and four-core phones are starting to make their way to market), the Lumia 900 has a single 1.4GHz Qualcomm APQ8055 processor. It comes with 16GB of internal storage, but no SD card slot to add more if you want. It sports 512MB of RAM rather than the more common 1GB.
Despite this, the Lumia 900 is fast and responsive. I experienced no delays in running apps, watching videos, browsing the Web or doing any of my other usual tasks. Judging from the responsiveness of this phone, there's no need for more than one core. In my experience, it performed as well or better than high-end Android phones with multiple cores, such as the Samsung Galaxy SII.
Incidentally, it's easy to forget that smartphones like the Lumia 900 are not just small computers, but phones as well. I found the voice connection to be clear and strong.
One of the phone's best features is its high-speed LTE connection, the first on a Windows Phone. I found the connection to be quite variable, ranging from about 7 Mbps to 13 Mbps when I tested it in Cambridge, Mass. Reviewers in other cities found variable speeds as well, generally ranging from 8 Mbps to 20 Mbps.
Even at 7 Mbps, though, the Lumia 900 is much faster than normal 3G connections available on Windows Phones, and transforms the experience of browsing the Web, downloading, and using data-centric mobile apps. Normally when I do that on a Windows Phone, I know I'm on a phone because of slow downloads and delays. With LTE, heavy data usage feels more like it does on a broadband-connected computer. If you've got a need for speed, and you want a Windows Phone, you'd do well to consider the Lumia 900.
And it's inexpensive: A 4G phone that can be had for $99 isn't currently easy to find. But soon 4G will be commonplace on $100 phones, including two upcoming Android-based phones: the LG Viper 4G LTE on Sprint and the LG Lucid on Verizon.
Also keep in mind that AT&T's LTE service isn't available everywhere -- at the time of this review, it was available in 31 cities in the U.S. And speed comes at the expense of battery life. When using LTE heavily for browsing the Web, downloading and using data-intensive apps, I was unable to get a full day's use out of the Lumia 900. In moderate use, it lasted the day. (The 1830mAh battery, unfortunately, isn't replaceable.)
China's Sunway TaihuLight theoretical peak performance is 124.5 petaflops.
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