The Google Nexus One was rumored to be a device that would revolutionize the overwhelming stronghold mobile operators have over their clients by totally bypassing carrier-voice calls and enabling users to make VoIP only calls thus freeing consumers from mobile operator's "money-grabbing" constraints.

The Nexus One is built by HTC with a lot of input from Google and it runs Android 2.1. The reported changes are a touch of 3D in the app tray, a bit of WebOS gadgetry with a preview of all homescreen pages done card-style. Preloaded are Google Navigation (in the US) and the new Google Goggles, which identifies objects by using the camera and brings up relevant information.

the device is not locked ad works on T-Mobile network in the US. Engadget have unearthed a report from the FCC about the Nexus One passing their tests. The interesting bit here is that it has quad-band GSM support and 1700/1900MHz 3G support, which covers  T-Mobile indeed.

Connect to everything.
5 mega-pixel camera, 3G (HSDPA), high resolution display, WiFi (802.11b/g) & GPS.

Features:

Operating System Android 2.1 (Flan)
Dimensions 119mm (L) x 59.8mm (W) x 11.5mm (T)
2G Quad-Band 850/900/1800/1900MHz
3G
UMTS (900/1700/2100)
Bluetooth Yes (Stereo)
Camera 5 mega-pixel (auto focus)
Memory Card microSDHC

• • Processor: QUALCOMM QSD 8250 1Ghz (Snapdragon) Dimensions:
• - 116.8 x 58.4 x 11.43mm
• • Weight: 129.8g
• • Battery:
• - Capacity: 1400 mAh
• • Display:
• - 480 x 800 pixels/3.7"
• - Touch Sensitive(Capactive)
• • Camera:
• - 5 x mega-pixels (auto-focus)
• - 2 x Digital Zoom
• - Geo Tagging
• • Video:
• - 27fps Video Recording (VGA)
• - Supported formats: MP4, 3GP, H.264, H.263
• - Video Streaming
• • Music:
• - Supported formats: MP3, AAC, eAAC+ & Ogg Vorbis
• • Ringtones:
• - Monophonic
• - Polyphonic (64)
• - MP3
• - AAC
• • Messaging:
• - SMS
• - E-mail (POP3, SMTP, IMAP4, Exchange)
• • Memory:
• - Phone Book (unlimited)
• - Dialled Calls
• - Missed Calls
• - Received Calls
• - 512MB (internal)
• - microSDHC (external)
• • Call Features:
• - Hands Free
• - Caller ID
• - Voice Dialling
• • Connectivity:
• - microUSB
• - 3.5mm Audio Connector
• - Bluetooth (2.0)
• • Navigation:
• - AGPS
• - Google Maps
• • Features:
• - Accelorometer
• - Proximity & Light Sensor
• - Tri Colour LED Indicator
• - Track Ball