Nokia Lumia 820 vs Nokia Lumia 720 vs Microsoft Lumia 640 XL Dual SIM

General Info

Manufacturer
Nokia	Nokia	Microsoft
Announced
Expected September 2012	February 2013	March 2015
Status
Available - November 2012	Available - April 2013	Available - April 2015
Price
-	-	Rs. 12,999 ($191.16) [Similarly Priced]
Colors
Black, Gray, Red, Yellow, White, Blue, Violet	White, Red, Yellow, Cyan/Black	Matte cyan, Orange, Black, Matte white, Glossy white
Form Factor
Candybar	Candybar	Candybar
Dimension
123.8 x 68.5 x 9.9 mm (4.87 x 2.7 x 0.39 in)	127.9 x 67.5 x 9 mm (5.04 x 2.66 x 0.35 in)	157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)
Weight
160 g (5.64 oz)	128 g (4.52 oz)	171 g (6.03 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE 800 / 1800 / 2600 / 2100/ 900	-	-
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail, IM

OS
Microsoft Windows Phone 8	Microsoft Windows Phone 8	Microsoft Windows Phone 8.1 with Lumia Denim
Processor
Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon	Dual-core 1 GHz, Qualcomm MSM8227	Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU
Adreno 225	Adreno 305	Adreno 305
RAM
1 GB	512 MB	1 GB
Internal Memory
8 GB storage	8 GB storage	8 GB
External Memory
microSD, up to 32 GB	microSD, up to 64 GB	microSD, up to 128 GB

Type
AMOLED capacitive touchscreen	TFT capacitive touchscreen	IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display
Colors
16M colors	16M colors	16M colors
Size
4.3 inches	4.3 inches	5.7 inches
Resolution
480 x 800 pixels (217 ppi)	480 x 800 pixels (217 ppi)	720 x 1280 pixels (259 ppi)
Screen-to-Body Ratio
62.04%	60.94%	68.88%
Multi-Touch

Rear Camera
8 MP, 3264x2448 pixels, Carl Zeiss Tessa	6.7 MP, Carl Zeiss optics	13 MP, 4128 x 3096 pixels
Flash
LED flash	LED flash	LED Flash
Features
Auto focus, Geo-tagging	Auto focus, Geo-tagging	Auto focus, Carl Zeiss Optics, 1/3'' Sensor Size
Video
Yes	Yes, 720p@30fps	1080p@30fps
Front Camera
Yes	Yes, 1.3 MP	5 MP, 1080p

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSDPA, 42 Mbps HSUPA, 5.76 Mbps LTE, Cat3, 50 Mbps UL, 100 Mbps DL	HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSPA 42.2/5.76 Mbps
Bluetooth
Yes, v3.1 with A2DP, EDR	Yes, v3.0 with A2DP	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n	Wi-Fi 802.11 a/b/g/n, dual-band	Wi-Fi 802.11 b/g/n, DLNA, hotspot
USB
Yes, microUSB v2.0	Yes, microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS support	Yes, with A-GPS support and GLONASS	Yes, with A-GPS, GLONASS, Beidou
Browser
HTML5	HTML5	HTML5