Samsung Galaxy Nexus vs Samsung Galaxy Alpha vs Xiaomi Redmi 2

General Info

Manufacturer
Samsung	Samsung	Xiaomi
Announced
October 2011	August 2014	January 2015
Status
Available - November 2011	Available - September 2014	Available - January 2015
Price
-	-	Rs. 5,999 ($88.22) [Similarly Priced]
Colors
Black	Black, white, gold, silver, blue	Black, White, Yellow, Pink, Green
Form Factor
Candybar	Candybar	Candybar
Dimension
135.5 x 67.9 x 8.9 mm (5.33 x 2.67 x 0.35 in)	132.4 x 65.5 x 6.7 mm (5.21 x 2.58 x 0.26 in)	134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in)
Weight
135 g (4.76 oz)	115 g (4.06 oz)	133 g (4.69 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1700 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100
4G Network
LTE 700 (region specific)	LTE	LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41)
Messaging
SMS, MMS, IM	SMS, MMS, EMail, IM	SMS, MMS, EMail, IM

OS
Android OS, v4.0 (Ice Cream Sandwich)	Android OS, v4.4.4 (KitKat)	Android OS, v4.4 (KitKat)
Processor
Dual-core 1.2GHz Cortex-A9 CPU, TI OMAP 4460 chipset	Quad-core 1.8 GHz Cortex-A15 & quad-core 1.3 GHz Cortex-A7, Exynos 5 Octa 5430	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410
GPU
No	Mali-T628 MP6	Adreno 306
RAM
1 GB	2 GB	1 GB
Internal Memory
16/32 GB storage	32 GB	8 GB
External Memory
No	No	microSD, up to 32 GB

Type
Super AMOLED capacitive touchscreen	Super AMOLED capacitive touchscreen	IPS LCD Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
4.65 inches	4.7 inches	4.7 inches
Resolution
720 x 1280 pixels (316 ppi)	720 x 1280 pixels (320 ppi)	720 x 1280 pixels (312 ppi)
Screen-to-Body Ratio
64.72%	66.95%	67.83%
Multi-Touch

Rear Camera
5 MP, 2592x1936 pixels	12 MP, 4128 x 3096 pixels	8 MP, 3264 x 2448 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Touch Focus, Geo-tagging, Face Detection	Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR	Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Sony Sensor, Panorama, Real-time HDR
Video
Yes, 1080p@30fps	2160p@30fps	Yes, 1080p
Front Camera
Yes, 1.3 MP	2.1 MP	2 MP, 720p

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE	HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL	HSPA, LTE Cat4 150/50 Mbps
Bluetooth
Yes, v3.0 with A2DP	v4.0, A2DP, EDR, LE	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, hotspot
USB
Yes, v2.0 microUSB	microUSB v2.0	microUSB v2.0
GPS
Yes, with A-GPS support, barometer sensor	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, Beidou
Browser
HTML	HTML5	HTML5