Phone Comparison - Samsung Galaxy Grand Duos I9082 vs Panasonic P51 vs Panasonic P31

general General Info

Manufacturer Samsung Panasonic Panasonic
Announced December 2012 May 2013 March 2014
Status Available - January 2013 Available - May 2013 Available - May 2014
Colors Black, White Black, White Pure White, Bluish 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)
144 x 75 x 8.5 mm
(5.67 x 2.95 x 0.33 in)
-
Weight 162 g (5.71 oz) 135 g (4.76 oz) -
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 1900 / 2100 - SIM 1 only
HSDPA 900 / 1900 / 2100 - SIM 1 only
HSDPA 900 / 2100 HSDPA 2100
Messaging SMS, MMS, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.1.2 (Jelly Bean) Android OS, v4.2 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean)
Processor Dual-core 1.2 GHz Cortex-A9, Broadcom Quad-core 1.2 GHz Cortex-A7, MTK MT6589 Quad-core 1.3 GHz, Mediatek MT6582M
GPU Broadcom VideoCore IV PowerVR SGX544 Mali-400MP2
RAM 1 GB 1 GB 512 MB
Internal Memory 8 GB 4 GB storage 4 GB ROM
External Memory microSD, up to 64 GB microSD, up to 32 GB microSD, up to 32 GB

display Display

Type Capacitive touchscreen IPS LCD capacitive touchscreen TFT Capacitive Touchscreen, Ultra Oleophobic Coating
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 5.0 inches 5 inches
Resolution 480 x 800 pixels (187 ppi) 720 x 1280 pixels (294 ppi) 480 x 854 pixels (196 ppi)
Screen-to-Body Ratio 64.20% 63.69% -
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio Stereo FM radio with RDS FM radio FM Radio with Recording
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, 3264x2448 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 Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR
Video Yes, 1080p@30fps Yes, 1080p Yes, 1080p@30fps
Front Camera Yes, 2 MP [Similar] Yes, 1.3 MP, 720p [Similar] Yes, VGA [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, 21 Mbps; HSUPA, 11 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes, v4.0 with A2DP, LE, EDR Yes, v4.0 with A2DP, EDR Yes, v4.0 with A2DP
Wi-Fi Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
USB Yes, microUSB v2.0 Yes, microUSB v2.0, USB On-the-go Yes, microUSB v2.0, USB On-the-go
GPS Yes, with A-GPS, support and GLONASS Yes, with A-GPS support Yes, with A-GPS support
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 8 GB, 1 GB RAM 4 GB storage, 1 GB RAM 4 GB ROM, 512 MB RAM
Expandable Storage microSD, up to 64 GB microSD, up to 32 GB microSD, up to 32 GB
USB OTG - Supported Supported

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 2500 mAh 2000 mAh
Stand by Up to 440 h - Up to 699 h
Talk Time Up to 10 h 10 min - Up to 9 h