Phone Comparison - Karbonn KT21 Express vs Sony Xperia M Dual

Karbonn KT21 Express
karbonn kt21 express
Sony Xperia M Dual
sony xperia m dual
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general General Info

Manufacturer Karbonn Sony
Announced 2012 June 2013
Status Available Available - September 2013
Colors Black Black, White, Purple, Yellow
Form Factor Candybar Candybar
Dimension - 124 x 62 x 9.3 mm
(4.88 x 2.44 x 0.37 in)
Weight - 115 g (4.06 oz)
2G Network GSM - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Both Versions)
3G Network N/A HSDPA 900 / 2100 - C2005
HSDPA 850 / 1700 / 1900 / 2100 - C2004
Messaging SMS, MMS SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS - Android OS, v4.1 (Jelly Bean)
Processor - Dual-core 1 GHz Krait, Qualcomm MSM8227 [Similar]
GPU - Adreno 305 [Similar]
RAM N/A 1 GB [Browse Similar]
Internal Memory - 4 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB

display Display

Type TFT capacitive touchscreen TFT capacitive touchscreen
Colors TFT capacitive touchscreen 16M colors
Size 2.8 inches [Similar] 4.0 inches [Similar]
Resolution 240 x 320 pixels (143 ppi) 480 x 854 pixels (245 ppi) [Similar]
Screen-to-Body Ratio - 57.31%
Multi-Touch yes yes

multimedia Multimedia

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

camera Camera

Rear Camera 3.15 MP, 2048x1536 pixels [Similar] 5 MP, 2592х1944 pixels [Similar]
Flash LED flash LED flash
Features - Auto focus, Geo-tagging, Touch Focus, Image Stabilization, HDR, Panorama
Video Yes Yes, 720p@30fps
Front Camera No [Similar] Yes, VGA [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Up to 86 kbps
Edge Yes Up to 237 kbps
3G N/A HSDPA, 21 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes Yes, v4.0 with A2DP, ANT+
Wi-Fi No Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot
USB Yes Yes, microUSB v2.0
GPS No Yes, with A-GPS support
Browser Yes HTML5

memory User Memory

Phonebook 2000 entries Practically unlimited entries and fields, Photocall
Call Records Yes Practically unlimited
Internal - 4 GB, 1 GB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB

Apps Sensors

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

battery Battery

Type Li-Ion Battery Li-Ion Battery
Capacity 1000 mAh 1750 mAh
Stand by - Up to 498 h (2G)
Up to 454 h (3G)
Talk Time - Up to 10 h 16 min (2G)
Up to 9 h (3G)