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Karbonn KT7 vs Karbonn KT21 Express

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Karbonn KT7 Remove phone

Posted: 08 Jun 2012
Market Status: Released
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Karbonn KT21 Express Remove phone

Posted: 25 Apr 2012
Market Status: Released

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Design
Device typeFeature phoneFeature phone 
Dimensions4.53 x 1.97 x 0.61 inches (115 x 50 x 15.5 mm)  
Weight3.88 oz (110 g)
the average is 4.8 oz (137 g)
  
Display
Physical size2.4 inches2.8 inches 
Resolution240 x 320 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.

167 ppi  
Technology

Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.

TFT  
TouchscreenYesMulti-touch 
Features Proximity sensor 
Camera
Camera1.3 megapixels3.2 megapixels 
Flash Yes 
FeaturesDigital zoomDigital zoom 
CamcorderYesYes 
Hardware
Storage expansionmicroSD, microSDHC up to 8 GBmicroSD, microSDHC up to 32 GB 
Battery
Talk time6.00 hours
the average is 12 h (740 min)
  
Stand-by time20.8 days (500 hours)
the average is 20 days (492 h)
  
Capacity1800 mAh1000 mAh 
specifications continue after the ad
Multimedia
Radio FM, Recording option 
SpeakersLoudspeakerLoudspeaker 
Internet browsing
Built-in online services support Facebook, YouTube (upload) 
Technology
GSM900, 1800 MHz900, 1800 MHz 
DataGPRSEDGE, GPRS 
Multiple SIM cards2 slots  
Connectivity
BluetoothYesYes 
USBYes  
OtherComputer sync  
Other features
NotificationsMusic ringtones, Polyphonic ringtones, Vibration  

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

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