Karbonn KT21 Express vs Sony Xperia M Dual

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          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 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

          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 multi touch yes multi touch

          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]

          Multimedia

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

          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

          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

          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

          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)

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