Here the Detailed specifications for the Nokia Lumia 900.
Built for speed and Internet
1.4 GHz processor, 4G LTE, Bing, Internet Explorer 9, HTML5, Wi-Fi
Design
4.3" AMOLED ClearBlack glass touchscreen, one-piece polycarbonate body, excellent antenna performance
Cameras
8 MP main camera, Carl Zeiss optics, dual LED flash, Auto Focus, 1 MP front camera, video calling
Battery
All day battery life, up to 7 hours talk time
Social
Facebook, Twitter, LinkedIn, email, Chat, SMS
GPS and navigation4
GPS feature
GPS, A-GPS, CellID, WiFi positioning
Browsing and Internet
Internet sharing
Use as a WiFi Hotspot for up to 5 WiFi-enabled devices
Browser feature
SVG, CSS 3, HTML5, XHTML, DOM Level 3, DOM Level 1 and 2, Internet Explorer 9 Mobile, Hardware Graphics Acceleration
Main camera
Primary camera sensor size - 8 megapixels, Camera resolution height - 264 pixels, Camera resolution width - 2448 pixels, Camera F number/aperture - 2.2 , Camera digital zoom - 3 x, Camera minimum focus range - 100 mm, Camera focal length - 28 mm
Main camera features
Geotagging, Touch Focus, Dual LED flash, Carl Zeiss Optics, Exposure Compensation, Fast one-click photo sharing, Auto and Manual White Balance
Camera image format
XMP, JPEG/Exif
Secondary camera
Secondary camera sensor size - 1 megapixel , Secondary camera resolution height - 1280 pixels, Secondary camera resolution width - 720 pixels, Secondary camera F number/aperture - 2.4
Software and applications
Other Applications
Bing Maps, AT&T Navigator, Tango Video Calls, Nokia Maps (available as a free download), Nokia Drive (available as a free download)
Gaming / Entertainment
Xbox Live, Marketplace, App Highlights, ESPN Sports Hub, AT&T U-verse Mobile
Features (Personal information Management)
Notes, Calendar, To-do list, Detailed contact information
Software platform & User Interface
Operating System - Windows Phone 7.5 Mango Commercial Release 2 (Mango + LTE)
Connectivity
WLAN support
WEP, WPA, 802.11b/g/n, WPA2-Personal, WPA-Enterprise
Data synchronization
Calendar, Contacts, To Do list, Media (Music, Video, Photos, Podcast), Zune for PC and Mac Connector Software
Local connectivity
WiFi, Micro USB, Bluetooth 2.1 +EDR, USB 2.0 High-Speed, 3.5mm AHJ Connector, Bluetooth Stereo Audio
Memory
Total user memory
14.5 GB mass memory (no slot for micro-SD cards) plus SkyDrive cloud storage
SDRAM memory - 512 MB
Power Management
Battery BP-6EW 1830mAh , Power management - USB Charging, Maximum 2G talk time - 7 h, Maximum GSM standby time - 300 h, Maximum 3G talk time - 7 h, Maximum 3G standby time - 300 h, Maximum music playback time - 60 h, Maximum video playback time - 6.5 h