Phone Comparison - Samsung Galaxy Grand Duos I9082 vs Karbonn A21 vs Samsung Galaxy Mega 5.8 Duos I9152

general General Info

Manufacturer Samsung Karbonn Samsung
Announced December 2012 2012 May 2013
Status Available - January 2013 Available Available - June 2013
Colors Black, White Pearl White White, Black
Form Factor Candybar Candybar Candybar
Dimension 143.5 x 76.9 x 9.6 mm
(5.65 x 3.03 x 0.38 in)
- 164.9 x 84.1 x 10.1 mm
(6.49 x 3.31 x 0.4 in)
Weight 162 g (5.71 oz) - 182 g (6.42 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 - GT-I9152 (SIM 1 & SIM 2)
3G Network HSDPA 850 / 1900 / 2100 - SIM 1 only
HSDPA 900 / 1900 / 2100 - SIM 1 only
HSDPA 2100 HSDPA 900 / 2100
Messaging SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.1.2 (Jelly Bean) Android OS, v4.0 (Ice Cream Sandwich) Android OS, v4.2 (Jelly Bean)
Processor Dual-core 1.2 GHz Cortex-A9, Broadcom Dual-core 1.2 GHz Dual-core 1.4 GHz
GPU Broadcom VideoCore IV - -
RAM 1 GB 512 MB 1 GB
Internal Memory 8 GB 4 GB 8 GB
External Memory microSD, up to 64 GB microSD, up to 32 GB microSD, up to 64 GB

display Display

Type Capacitive touchscreen TFT capacitive touchscreen TFT capacitive touchscreen
Colors 16M colors 256K colors -
Size 5.0 inches 4.5 inches 5.8 inches
Resolution 480 x 800 pixels (187 ppi) 480 x 800 pixels (207 ppi) 540 x 960 pixels (190 ppi)
Screen-to-Body Ratio 64.20% - 66.80%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio with RDS No Yes
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 8 MP, 3264x2448 pixels 5 MP, 2592х1944 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, Face Detection Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection
Video Yes, 1080p@30fps Yes Yes
Front Camera Yes, 2 MP [Similar] Yes, 1.3 MP [Similar] Yes, 1.9 MP [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, 7.2 Mbps HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes, v4.0 with A2DP, LE, EDR Yes, v2.1 with A2DP Yes, v4.0
Wi-Fi Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot
USB Yes, microUSB v2.0 Yes, microUSB v2.0 Yes, microUSB v2.0
GPS Yes, with A-GPS, support and GLONASS Yes, with A-GPS support Yes, with A-GPS support
Browser HTML5 HTML HTML5

memory User Memory

Internal 8 GB, 1 GB RAM 4 GB, 512 MB RAM 8 GB, 1 GB RAM
Expandable Storage microSD, up to 64 GB microSD, up to 32 GB microSD, up to 64 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 not supported

battery Battery

Type Standard battery, Li-Ion Li-Ion Battery Li-Ion Battery
Capacity 2100 mAh 1800 mAh 2600 mAh
Stand by Up to 440 h Up to 200 h -
Talk Time Up to 10 h 10 min Up to 5 h -