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Karbonn KT21 Express vs Karbonn KT7

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Karbonn KT21 Express Remove phone

Posted: 25 Apr 2012
Market Status: Released
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Karbonn KT7 Remove phone

Posted: 08 Jun 2012
Market Status: Released

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Design
Device typeFeature phoneFeature phone 
Dimensions 4.53 x 1.97 x 0.61 inches (115 x 50 x 15.5 mm) 
Weight 3.88 oz (110 g)
the average is 4.8 oz (137 g)
 
Display
Physical size2.8 inches2.4 inches 
Resolution 240 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 
Screen-to-body ratio 30.98 % 
TouchscreenMulti-touchYes 
FeaturesProximity sensor  
Camera
Camera3.2 megapixels1.3 megapixels 
FlashYes  
FeaturesDigital zoomDigital zoom 
CamcorderYesYes 
Hardware
Storage expansionmicroSD, microSDHC up to 32 GBmicroSD, microSDHC up to 8 GB 
Battery
Talk time 6.00 hours
the average is 11 h (678 min)
 
Stand-by time 20.8 days (500 hours)
the average is 20 days (479 h)
 
Capacity1000 mAh1800 mAh 
specifications continue after the ad
Multimedia
RadioFM, Recording option  
SpeakersLoudspeakerLoudspeaker 
Internet browsing
Built-in online services supportFacebook, YouTube (upload)  
Technology
GSM900, 1800 MHz900, 1800 MHz 
DataEDGE, GPRSGPRS 
Multiple SIM cards 2 slots 
Connectivity
BluetoothYesYes 
USB Yes 
Other Computer sync 
Other features
Notifications Music ringtones, Polyphonic ringtones, Vibration 

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

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