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The good: The Nokia N900 offers a powerful mobile Web browser, plenty of storage, a 5-megapixel camera, and an ultrasharp display. It's also fast, multitasks well, and has excellent call quality. Wi-Fi, 3G, Bluetooth, and GPS are all onboard.

The bad: The user interface isn't very intuitive. Ovi Store for the N900 isn't live yet, limiting the number of available apps, and it doesn't sync with Exchanger Server 2003. The phone is a bit bulky and not all apps work in portrait mode.

The bottom line: While it has yet to reach its full potential, the Nokia N900 is a powerful mobile device with excellent browsing capabilities and vast customization options. However, its unintuitive interface and other limitations make this a smartphone for tech enthusiasts and early adopters only

The Nokia N900 is the next evolution of the company's Internet Table

Design
Aside from the slider design, the Nokia N900 bears very little resemblance to its predecessors. Instead of a tablet form factor, the N900 looks more like one of the N series smartphones, such as the N96, but is on the bulkier side at 4.37 inches wide by 2.35 inches tall by 0.77 inch thick and 6.38 ounces. In hand, the N900 feels like a very solid phone but the extra weight is noticeable when you're on a phone call and it'll make for a bit of a tight fit in a pants pocket.
Performance
We tested the quad-band (GSM 850/900/1800/1900; WCDMA 900/1700/2100) in New York using T-Mobile service and call quality was excellent. We were impressed at how crystal clear audio sounded on our end. There was absolutely no trace of background noise or voice distortion, and there was plenty of volume. Friends also had similar praises and said they couldn't tell we were calling from a cell phone. We had no problems using an airline's voice-automated system and didn't experience any dropped calls during our testing period.

Speakerphone quality was also good. Occasionally, the sound could be a bit muffled, but for the most part, we had no issues with speakerphone calls. We successfully paired the N900 with the Logitech Mobile Traveller Bluetooth headset and the Motorola S9 Bluetooth Active Headphones.

Powered by a 600MHz TI OMAP3 3430 (Cortex A8) processor, the N900 performed beautifully during our testing period. The transition between home screens was smooth and the smartphone was very responsive with minimal delays even when working in multiple applications. We loaded up a couple of MPEG-4 videos on the device and playback was smooth with synchronized audio and images, and the picture quality was particularly amazing on the N900's sharp display. With the 3.5mm jack, we were also able to plug in our Bose On-Ear Headphones and enjoy rich-sounding music.