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Karbonn A21

Posted
Jan 16, 2013
Market status
Released

Pros

  • Dual SIM card support
  • Dual core processor

Cons

  • Low pixel density screen (207 ppi)
  • Lacks a standard (3.5mm) headphones jack
  • Lacks an ambient light sensor for automatic screen brightness adjustment
  • Lacks a proximity sensor that turns the display оff during a phone call

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Description

The Karbonn A21 is a powerful dual-SIM Android device. It boasts Android 4.0, dual core 1.2GHz processor, 4.5'' display, 5MP camera, 3G support and expandable memory of up to 32GB via microSD card slot.

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Design

  • Device type:
    • Smart phone
  • OS:
    • Android (4.0)

Display

  • Physical size:
    • 4.5 inches
  • Resolution:
    • 480 x 800 pixels
  • Pixel density:

    Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.

    • 207 ppi
  • Touchscreen:
      • Multi-touch

Camera

  • Camera:
      • 5 megapixels
    • Flash:
      • LED
    • Features:
      • Autofocus, Face detection
  • Camcorder:
      • Yes
  • Front-facing camera:
      • 1.3 megapixels

Hardware

  • Processor:

    Processor - The processor is the main computing component of a phone and is a major factor when it comes to the overall speed of the device. Some more powerful smartphones use dual-core and quad-core processors designed to deliver greater performance.

    • Dual core, 1200 MHz
  • Built-in storage:
    • 4 GB
  • Storage expansion:
    • microSD, microSDHC up to 32 GB

Battery

  • Talk time:
    • 5.00 hours
      the average is 12 h (703 min)
  • Stand-by time:
    • 8.3 days (200 hours)
      the average is 20 days (491 h)
  • Capacity:
    • 1800 mAh

Multimedia

  • Music player:
    • Filter by:
      • Album, Artist, Playlists
    • Features:
      • Album art cover, Background playback
  • Speakers:
    • Loudspeaker
  • Broadcast Mobile TV:
      • Yes

Internet browsing

  • Built-in online services support:
    • YouTube (upload), Picasa/Google+

Technology

  • GSM:
    • 900, 1800, 1900 MHz
  • UMTS:
    • 2100 MHz
  • Data:
    • HSDPA 7.2 Mbit/s, UMTS, EDGE, GPRS
  • Multiple SIM cards:
      • 2 slots
  • Positioning:

    Positioning - This field shows the positioning systems supported by the device. There are three main types: GPS, A-GPS and GLONASS. GPS - This is one of the most widespread global positioning technologies, developed and maintained by the U.S. government. It uses satellites in order to detect your location. Works best in clear weather. A-GPS - A-GPS stands for Assisted GPS and is the industry standard for positioning and navigation. “Assisted” means that it can use local wireless networks, in addition to satellites, for quicker and more precise localization. GLONASS - GLONASS is a global positioning system, developed by the Russian Federation. It’s very similar to GPS, but isn’t so popular in cell phones.

    • GPS, A-GPS
  • Navigation:
    • Yes
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Connectivity

  • Bluetooth:
      • Yes
  • Wi-Fi:
      • 802.11 b, g, n
  • USB:
      • Yes
    • Connector:
      • microUSB
    • Features:
      • Mass storage device, USB charging

Other features

  • Notifications:
    • Music ringtones, Vibration
    • Voice dialing, Voice commands, Voice recording

To see the full specifications with in-depth details click here.


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