As a platform, Windows Phone has come a long way. Overall, we found Windows Phone 8 to offer a stable, smooth experience. The 1.5 GHz dual-core Snapdragon S4 processor and 1GB of RAM found in Nokia's Lumia 810 gives the phone the power it needs to respond to your demands.
We were very impressed by the Lumia 810's camera. With Carl Zeiss optics and a number of cool and unique software features we haven't seen on other phones to date, the Lumia 810 definitely has a competitive edge here.
In a world where high-speed browsing is a key feature, the fact that the Lumia 810 is tied to T-Mobile's network will be a disadvantage in some people's eyes, especially if you live in one of AT&T or Verizon Wireless' 4G LTE coverage areas. That said, Nokia also offers the Lumia 820 for AT&T and the Lumia 822 for Verizon Wireless. These phones may be worth your consideration as well.
Windows Phone 8's relatively small app store and the fact that some apps (such as Google-branded apps) are noticeably missing from the Marketplace will also be a drawback to some. Regardless of how great a phone's hardware and implementation is, if you can't get the apps you want and need, the phone won't be quite as useful as other smartphones.
Although the Marketplace may seem limited, Nokia's exclusive suite of apps is world class. These apps are sure to be a hit especially among travelers. Nokia Drive is an excellent navigation app and Nokia City Lens provides for a fun and easy way to find nearby restaurants, businesses, and much more.
Overall, we feel the Lumia 810 is a solid handset that has a lot to offer. It's zippy and responsive, and Windows Phone 8 has some cool new features that should catch your eye. In addition, the Lumia 810 has a price tag ($49 - $99 on contract) that's friendlier to your wallet than the top-of-the-line Android and iOS handsets which are also vying for your attention. If you can live with the size and weight of the Lumia 810 and the limited Marketplace offerings don't deter you, perhaps you should consider the Lumia 810.