Karbonn A21 vs Alcatel One Touch Idol

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          General Info

          Manufacturer
          Karbonn Alcatel
          Announced
          2012 January 2013
          Status
          Available Available - May 2013
          Colors
          Pearl White Silver, Slate, Pink, Red, Yellow
          Form Factor
          Candybar Candybar
          Dimension
          - 133 x 67.5 x 7.9 mm
          (5.24 x 2.66 x 0.31 in)
          Weight
          - 109 g (3.84 oz)
          2G Network
          GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
          3G Network
          HSDPA 2100 HSDPA 900 / 2100
          HSDPA 850 / 1900 / 2100
          Messaging
          SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM
          Build Features
          - Dragon Trail Glass

          Hardware and OS

          OS
          Android OS, v4.0 (Ice Cream Sandwich) Android OS, v4.1 (Jelly Bean)
          Processor
          Dual-core 1.2 GHz [Similar] Dual-core 1 GHz, MTK 6577+ [Similar]
          GPU
          - -
          RAM
          512 MB [Browse Similar] N/A
          Internal Memory
          4 GB 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB
          External Memory
          microSD, up to 32 GB microSD, up to 32 GB (dual SIM version)

          Display

          Type
          TFT capacitive touchscreen IPS LCD capacitive touchscreen
          Colors
          256K colors 16M colors
          Size
          4.5 inches [Similar] 4.66 inches [Similar]
          Resolution
          480 x 800 pixels (207 ppi) [Similar] 540 x 960 pixels (236 ppi) [Similar]
          Screen-to-Body Ratio
          - 66.89%
          Multi-Touch
          yes multi touch yes multi touch

          Camera

          Rear Camera
          5 MP, 2592х1944 pixels [Similar] 8 MP, 3264 x 2448 pixels [Similar]
          Flash
          LED flash LED flash
          Features
          Auto focus, Geo-tagging, Face Detection Auto focus, Geo-tagging, Touch Focus
          Video
          Yes Yes
          Front Camera
          Yes, 1.3 MP [Similar] Yes, 2 MP [Similar]

          Multimedia

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

          Connectivity and Data Rate

          GPRS
          Yes Yes
          Edge
          Yes Yes
          3G
          HSDPA, 7.2 Mbps HSDPA 7.2 Mbps
          Bluetooth
          Yes, v2.1 with A2DP Yes, v3.0 with A2DP
          Wi-Fi
          Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot
          USB
          Yes, microUSB v2.0 Yes, microUSB v2.0
          GPS
          Yes, with A-GPS support Yes, with A-GPS support
          Browser
          HTML HTML

          User Memory

          Internal
          4 GB, 512 MB RAM 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB
          Expandable Storage
          microSD, up to 32 GB microSD, up to 32 GB (dual SIM version)

          Sensors

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

          Battery

          Type
          Li-Ion Battery Li-Ion Battery
          Capacity
          1800 mAh 1800 mAh
          Stand by
          Up to 200 h Up to 415 h (2G)
          Up to 410 h (3G)
          Talk Time
          Up to 5 h Up to 7 h 10 min (2G)
          Up to 3 h 30 min (3G)

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