
Display design is not much different with Nokia Lumia 800. This smartphone screen size 4.3-inch Super AMOLED WVGA (480 x 800 pixels), which supported ClearBlack Display technology. Processor 1.4 GHz single-core, plus 16GB of storage and 512 MB of RAM.
This Smartphone is also equipped with Nokia navigation app called Drive, ESPN sports application, and a special version of the CNN iReport application. Not only HSDPA and HSUPA channels owned by Nokia Lumia 900. The phone also equip themselves with the 4G LTE technology (Long Term Evolution) which could bring the user action until the super fast cruising speed of 50 Mbps.

The Lumia 900 is on the big side, with a 4.3-inch screen. It has a solid-feeling plastic body, though it’s designed and cut in such a way that using brushed metal would have gone a long way to making it feel less cheap. The curved design is comfortable to hold, but the surface of the plastic body looks a little bulgy around the edges of the screen.
A 1.4GHz processor and 512MB of RAM power the Lumia 900, about the same specs as the first HTC Titan. During use, we found the Windows Phone OS was much faster overall, scrolling and executing transitions more quickly and smoothly. We had lamented the slowish transitions on the HTC Titan, which has a 1.5GHz processor, so we're happy to find out that rate-limiting factor isn't the OS.

The volume rocker on the phone is located above the sleep button; the camera button is towards the bottom on the right side. Almost every phone in recent memory places the sleep button at or near the top, so seeing a phone with one is the middle feels like looking at a world map with Australia in the Atlantic Ocean.
Vance Kim, the Nokia marketing campaign manager, told this design choice is meant to be more handed-ness agnostic than higher-up sleep buttons, and we quickly saw this was true: either the thumb of the right hand or forefinger of the left hand can hit that button easily, and with more leverage than one located at the top. The remaining issue is accidental presses, which we couldn't get a read on during our short time with the phone. All these buttons are easier to press and have more depth and feedback than those of the HTC Titan.
The Lumia 900's AMOLED display was not the best screen we saw at the show, but the level of color and detail was fine. The phone has an 8-megapixel camera on the back that neither takes phenomenal photos nor is particularly fast. There's also a front-facing camera for video chat.
In our eyes, the biggest red flag, relatively speaking, on the Lumia 900's spec sheet is the battery life: Nokia estimates the phone's 1830mAh battery (a generous size for a smartphone) will get up to 7 hours of 3G talk time and 6.5 hours of video. While the phone is undoubtedly faster than other Windows Phone devices we've tried, this suggests that it's operating at too high a level for a decent battery life.
While we like the Windows Phone OS and the Lumia 900's particular talent for smooth and speedy navigation, most of the other features make us hope Nokia targets the Lumia 900 as a really good mid-range phone, rather than trying to pass it off as a premium handset. The Lumia 900 and 800 are set to launch in March, for as-yet-unannounced prices.

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