after lumia800 nokia comes with another windows phone710t which has less features than lumia800the key feature are

2G Network	GSM 850 / 900 / 1800 / 1900
3G Network	HSDPA 850 / 1700 / 1900 / 2100
Announced	2011, December
Status	Coming soon. Exp. release 2012, January

Body	Dimensions	119 x 62.4 x 12.5 mm, 81.1 cc
	Weight	125.5 g

Display	Type	TFT capacitive touchscreen, 16M colors
	Size	480 x 800 pixels, 3.7 inches (~252 ppi pixel density)
	Multitouch	Yes
	Protection	Corning Gorilla Glass
		- Nokia ClearBlack display

Sound	Alert types	Vibration; MP3, WAV ringtones
	Loudspeaker	Yes
	3.5mm jack	Yes

Memory	Card slot	No
	Internal	8 GB storage, 512 MB RAM

Data	GPRS	Class 33
	EDGE	Class 33
	Speed	HSDPA 14.4 Mbps, HSUPA 5.76 Mbps
	WLAN	Wi-Fi 802.11 b/g/n
	Bluetooth	Yes, v2.1 with A2DP, EDR
	USB	Yes, microUSB v2.0

Camera	Primary	5 MP, 2592х1944 pixels, autofocus, LED flash
	Features	Geo-tagging, face detection, image stabilization
	Video	Yes, 720p@30fps
	Secondary	No

Features	OS	Microsoft Windows Phone 7.5 Mango
	Chipset	Qualcomm MSM8255 Snapdragon
	CPU	1.4 GHz Scorpion
	GPU	Adreno 205
	Sensors	Accelerometer, proximity, compass
	Messaging	SMS (threaded view), MMS, Email, Push Email, IM
	Browser	WAP 2.0/xHTML, HTML5, RSS feeds
	Radio	Stereo FM radio with RDS
	GPS	Yes, with A-GPS support
	Java	No
	Colors	Black, white/black
		- MicroSIM card support only - SNS integration - Active noise cancellation with dedicated mic - MP3/WAV/eAAC+/WMA player - MP4/H.264/H.263/WMV player - Document viewer/editor - Video/photo editor - Voice memo/command/dial - Predictive text input

Battery		Standard battery, Li-Ion 1300 mAh (BP-3L)
	Stand-by	Up to 396 h
	Talk time	Up to 7 h