Apple iPhone 4 vs Samsung Galaxy S3 Slim vs Xiaomi Redmi 2

General Info

Manufacturer
Apple	Samsung	Xiaomi
Announced
June 2010	March 2014	January 2015
Status
Available - June 2010	Available - March 2014	Available - January 2015
Price
-	-	Rs. 5,999 ($88.22) [Similarly Priced]
Colors
Black, White	Black, White	Black, White, Yellow, Pink, Green
Form Factor
Candybar	Candybar	Candybar
Dimension
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in)	133 x 66 x 9.7 mm (5.24 x 2.6 x 0.38 in)	134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in)
Weight
137 g (4.83 oz)	139 g (4.9 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 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 1900 / 2100 TD-SCDMA 1900 / 2100
4G Network
-	-	LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41)
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, EMail, IM	SMS, MMS, EMail, IM

OS
iOS 4, upgradable to iOS 5	Android OS, v4.2 (Jelly Bean)	Android OS, v4.4 (KitKat)
Processor
1 GHz Cortex-A8, Apple A4	Quad-core 1.2 GHz,	Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410
GPU
PowerVR SGX535	-	Adreno 306
RAM
512 MB	1 GB	1 GB
Internal Memory
8/16/32 GB storage	8 GB ROM	8 GB
External Memory
No	microSD, up to 32 GB	microSD, up to 32 GB

Type
LED-backlit IPS TFT, capacitive touchscreen	TFT Capacitive Touchscreen	IPS LCD Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
3.5 inches	4.52 inches	4.7 inches
Resolution
640 x 960 pixels (330 ppi)	540 x 960 pixels (244 ppi)	720 x 1280 pixels (312 ppi)
Screen-to-Body Ratio
53.92%	64.00%	67.83%
Multi-Touch

Rear Camera
5 MP, 2592 x 1944 pixels	5 MP, 2592х1944 pixels	8 MP, 3264 x 2448 pixels
Flash
LED flash	LED flash	LED flash
Features
Auto focus, Touch Focus, Geo-tagging, HDR	Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization	Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Sony Sensor, Panorama, Real-time HDR
Video
Yes, 720p@30fps, LED video light, geo-tagging	Yes	Yes, 1080p
Front Camera
Yes, videocalling over Wi-Fi only	Yes, VGA	2 MP, 720p

GPRS
Class 10 (4+1/3+2 slots), 32 - 48 kbps	Yes	Yes
Edge
Class 10, 236.8 kbps	Yes	Yes
3G
HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps	HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSPA, LTE Cat4 150/50 Mbps
Bluetooth
Yes, v2.1 with A2DP	Yes, v4.0 with A2DP, EDR	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 b/g/n, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot	Wi-Fi 802.11 b/g/n, hotspot
USB
Yes, v2.0	Yes, microUSB v2.0 (MHL), USB On-the-go	microUSB v2.0
GPS
Yes, with A-GPS support	Yes, with A-GPS support and GLONASS	Yes, with A-GPS, GLONASS, Beidou
Browser
HTML (Safari)	HTML5	HTML5