Xiaomi Redmi Note 4G vs Microsoft Lumia 640 XL vs Xiaomi Mi 4i

General Info

Manufacturer
Xiaomi	Microsoft	Xiaomi
Announced
August 2014	March 2015	April 2015
Status
Available - November 2014	Available - April 2015	Available - April 2015
Price
-	Rs. 12,999 ($191.16) [Similarly Priced]	Rs. 8,999 ($132.34) [Similarly Priced]
Colors
Black/White	Matte cyan, Orange, Black, Matte white, Glossy white	Black, White, Blue, Yellow, Pink
Form Factor
Candybar	Candybar	Candybar
Dimension
154 x 78.7 x 9.5 mm (6.06 x 3.1 x 0.37 in)	157.9 x 81.5 x 9 mm (6.22 x 3.21 x 0.35 in)	138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)
Weight
199 g (7.02 oz)	171 g (6.03 oz)	130 g (4.59 oz)
2G Network
GSM 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
TD-SCDMA 1900 / 2000	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100
4G Network
TD-LTE 1900 / 2300 / 2600	-	LTE
Messaging
SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, EMail, IM

OS
Android OS, v4.2 (Jelly Bean)	Microsoft Windows Phone 8.1 with Lumia Denim	Android OS, v5.0 (Lollipop)
Processor
Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8928 Snapdragon 400	Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400	Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615
GPU
Adreno 305	Adreno 305	Adreno 405
RAM
2 GB	1 GB	2 GB
Internal Memory
8 GB	8 GB	16/32 GB
External Memory
microSD, up to 64 GB	microSD, up to 128 GB	No

Type
IPS LCD capacitive touchscreen	IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display	IPS LCD capacitive touchscreen
Colors
16M colors	16M colors	16M colors
Size
5.5 inches	5.7 inches	5.0 inches
Resolution
720 x 1280 pixels (267 ppi)	720 x 1280 pixels (259 ppi)	1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio
68.82%	68.88%	71.57%
Multi-Touch

Rear Camera
13 MP, 4128 x 3096 pixels	13 MP, 4128 x 3096 pixels	13 MP, 4128 x 3096 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, HDR	Auto focus, Carl Zeiss Optics, 1/3'' Sensor Size	Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR
Video
1080p@30fps	1080p@30fps	1080p@30fps
Front Camera
5 MP	5 MP, 1080p	5 MP

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
TD-SCDMA; LTE	HSPA 42.2/5.76 Mbps	HSPA, LTE
Bluetooth
v4.0, A2DP, LE	v4.0, A2DP	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, DLNA, hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, hotspot
USB
microUSB v2.0, USB On-the-go	microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, Beidou	Yes, with A-GPS, GLONASS
Browser
HTML5	HTML5	HTML5