Phone Comparison - Samsung Galaxy S Duos S7562 vs Karbonn A99 vs Panasonic T31

general General Info

Manufacturer Samsung Karbonn Panasonic
Announced July 2012 October 2013 October 2013
Status Available - September 2012 Available - October 2013 Available - November 2013
Colors White White, Black Bluish Black, Pure White
Form Factor Candybar Candybar Candybar
Dimension 121.5 x 63.1 x 10.5 mm
(4.78 x 2.48 x 0.41 in)
- 122 x 64.4 x 11.95 mm
(4.8 x 2.54 x 0.47 in)
Weight 120 g (4.23 oz) - 120 g (4.23 oz)
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 900 / 2100 HSDPA 2100 HSDPA 850 / 1900 / 2100
Messaging SMS, MMS, Push Mail, EMail SMS, MMS, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.0 (Ice Cream Sandwich) Android OS, v4.2.2 (Jelly Bean) Android OS, v4.2.2 (Jelly Bean) with FOTA upgrade
Processor 1 GHz Cortex-A5, Qualcomm MSM7227A Snapdragon Dual-core 1.3 GHz, MTK 6572 Dual-core 1.3 GHz, MTK 6572
GPU Adreno 200 Mali-400MP Mali-400
RAM 768 MB 512 MB 512 MB
Internal Memory 4 GB storage 4 GB 4 GB (1.9 GB user memory)
External Memory microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB

display Display

Type TFT capacitive touchscreen IPS LCD Capacitive Touchscreen, Wide Viewing Angle TFT capacitive touchscreen
Colors 16M colors 16M colors 16M colors
Size 4.0 inches 3.97 inches 4.0 inches
Resolution 480 x 800 pixels (233 ppi) 480 x 800 pixels (235 ppi) 480 x 800 pixels (233 ppi)
Screen-to-Body Ratio 59.52% - 58.08%
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 5 MP, 2592х1944 pixels 5 MP, 2592х1944 pixels 3.2 MP, 2048x1536 pixels
Flash LED flash LED Flash No
Features Auto focus, Geo-tagging - Fixed Focus, Geo-tagging
Video Yes, FWVGA@30fps Yes, 720p Yes, VGA@30fps
Front Camera Yes, VGA [Similar] Yes [Similar] Yes, VGA [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes, v3.0 with A2DP Yes, v2.0 A2DP, EDR Yes, v4.0 with A2DP
Wi-Fi Wi-Fi 802.11 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 Direct, Wi-Fi hotspot
USB Yes, microUSB v2.0 Yes, microUSB v2.0 Yes, microUSB v2.0
GPS Yes, with A-GPS support Yes Yes, with A-GPS support
Browser HTML, Adobe Flash Lite HTML HTML5

memory User Memory

Internal 4 GB storage, 768 MB RAM 4 GB ROM, 512 MB RAM 4 GB (1.9 GB user memory), 512 MB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 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 1500 mAh 1400 mAh 1300 mAh
Stand by Up to 445 h (2G)
Up to 330 h (3G)
- Up to 510 h (2G)
Up to 400 h (3G)
Talk Time Up to 13 h (2G)
Up to 7 h 25 min (3G)
- Up to 3 h 30 min (2G)
Up to 9 h 30 min (3G)