Phone Comparison - Samsung Galaxy Grand Duos I9082 vs Xiaomi Redmi 2 vs Microsoft Lumia 640 LTE

general General Info

Manufacturer Samsung Xiaomi Microsoft
Announced December 2012 January 2015 March 2015
Status Available - January 2013 Available - January 2015 Available - April 2015
Price - Rs. 5,999 ($88.22) [Similarly Priced] Rs. 7,999 ($117.63) [Similarly Priced]
Colors Black, White Black, White, Yellow, Pink, Green Yes
Form Factor Candybar Candybar Candybar
Dimension 143.5 x 76.9 x 9.6 mm
(5.65 x 3.03 x 0.38 in)
134 x 67.2 x 9.4 mm
(5.28 x 2.65 x 0.37 in)
141.3 x 72.2 x 8.8 mm
(5.56 x 2.84 x 0.35 in)
Weight 162 g (5.71 oz) 133 g (4.69 oz) 145 g (5.11 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100 - SIM 1 only
HSDPA 900 / 1900 / 2100 - SIM 1 only
HSDPA 850 / 1900 / 2100
TD-SCDMA 1900 / 2100
HSDPA 850 / 900 / 2100
4G Network - LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41) LTE
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.1.2 (Jelly Bean) Android OS, v4.4 (KitKat) Microsoft Windows Phone 8.1 with Lumia Denim
Processor Dual-core 1.2 GHz Cortex-A9, Broadcom Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 Quad-core 1.2 GHz Cortex-A7, Qualcomm Snapdragon 400
GPU Broadcom VideoCore IV Adreno 306 Adreno 305
RAM 1 GB 1 GB 1 GB
Internal Memory 8 GB 8 GB 8 GB
External Memory microSD, up to 64 GB microSD, up to 32 GB microSD, up to 128 GB

display Display

Type Capacitive touchscreen IPS LCD Capacitive Touchscreen IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3, ClearBlack Display
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 4.7 inches 5.0 inches
Resolution 480 x 800 pixels (187 ppi) 720 x 1280 pixels (312 ppi) 720 x 1280 pixels (294 ppi)
Screen-to-Body Ratio 64.20% 67.83% 67.43%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio with RDS FM Radio FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 8 MP, 3264x2448 pixels 8 MP, 3264 x 2448 pixels 8 MP, 3264 x 2448 pixels
Flash LED flash LED flash LED flash
Features 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 Auto focus, 1/4'' Sensor Size
Video Yes, 1080p@30fps Yes, 1080p 1080p@30fps
Front Camera Yes, 2 MP [Similar] 2 MP, 720p [Similar] 1 MP, 720p [Similar]

connectivity Connectivity and Data Rate

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

memory User Memory

Internal 8 GB, 1 GB RAM 8 GB, 1 GB RAM / 16 GB, 2 GB RAM 8 GB, 1 GB RAM
Expandable Storage microSD, up to 64 GB microSD, up to 32 GB microSD, up to 128 GB

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC not supported NFC not supported NFC supported

battery Battery

Type Standard battery, Li-Ion Li-Po Battery Li-Ion Battery
Capacity 2100 mAh 2200 mAh 2500 mAh
Stand by Up to 440 h - Up to 864 h (2G)
Up to 864 h (3G)
Talk Time Up to 10 h 10 min - Up to 26 h 30 min (2G)
Up to 17 h 30 min (3G)