Nokia Lumia 630 Dual SIM vs Xiaomi Mi 4 LTE vs Microsoft Lumia 640 XL Dual SIM

General Info

Manufacturer
Nokia	Xiaomi	Microsoft
Announced
April 2014	December 2014	March 2015
Status
Available - May 2014	Available - December 2014	Available - April 2015
Price
-	Rs. 11,999 ($176.46) [Similarly Priced]	Rs. 12,999 ($191.16) [Similarly Priced]
Colors
Green, yellow, white, black	White	Matte cyan, Orange, Black, Matte white, Glossy white
Form Factor
Candybar	Candybar	Candybar
Dimension
129.5 x 66.7 x 9.2 mm (5.1 x 2.63 x 0.36 in)	139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in)	157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)
Weight
134 g (4.73 oz)	149 g (5.26 oz)	171 g (6.03 oz)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
-	LTE - international model	-
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail, IM

OS
Microsoft Windows Phone 8.1	Android OS, v4.4.3 (KitKat)	Microsoft Windows Phone 8.1 with Lumia Denim
Processor
Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400	Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801	Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU
-	Adreno 330	Adreno 305
RAM
512 MB	3 GB	1 GB
Internal Memory
8 GB ROM	16 GB	8 GB
External Memory
microSD, up to 128 GB	No	microSD, up to 128 GB

Type
IPS LCD Capacitive Touchscreen	IPS LCD capacitive touchscreen	IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display
Colors
16M colors	16M colors	16M colors
Size
4.5 inches	5.0 inches	5.7 inches
Resolution
480 x 854 pixels (218 ppi)	1080 x 1920 pixels (441 ppi)	720 x 1280 pixels (259 ppi)
Screen-to-Body Ratio
64.43%	72.14%	68.88%
Multi-Touch

Rear Camera
5 MP, 2592 х 1944 pixels	13 MP, 4128 x 3096 pixels	13 MP, 4128 x 3096 pixels
Flash
No	dual-LED flash	LED Flash
Features
Auto focus, 1/4' Sensor Size, Geo-tagging, Panorama	Auto focus, 1/3' Sensor Size, 1.12�m Pixel Size, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR	Auto focus, Carl Zeiss Optics, 1/3'' Sensor Size
Video
Yes, 720p@30fps	2160p@30fps, 1080p@30fps, 720p@120fps, HDR	1080p@30fps
Front Camera
No	8 MP, 1080p@30fps	5 MP, 1080p

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps	HSPA 42.2/5.76 Mbps
Bluetooth
Yes, v4.0 with A2DP	v4.0, A2DP	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot	Wi-Fi 802.11 b/g/n, DLNA, hotspot
USB
Yes, microUSB v2.0	microUSB v2.0, USB Host	microUSB v2.0
GPS
Yes, with A-GPS support and GLONASS	Yes, with A-GPS support, GLONASS, Beidou	Yes, with A-GPS, GLONASS, Beidou
Browser
HTML5	HTML5	HTML5