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Karbonn KT21 Express vs Karbonn K 1818

Karbonn KT21 Express Remove phone

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Posted: 25 Apr 2012
Market Status: Released

Karbonn K 1818 Remove phone

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Posted: 27 Aug 2011
Market Status: Released

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Design
Device typeFeature phoneFeature phone 
Dimensions 4.20 x 2.14 x 0.50 inches (106.6 x 54.3 x 12.7 mm) 
Weight 3.35 oz (95 g)
the average is 4.8 oz (137 g)
 
Display
Physical size2.8 inches3.2 inches 
Resolution 240 x 240 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.

 106 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 
Colors 262 144 
TouchscreenMulti-touchYes 
FeaturesProximity sensor  
Camera
Camera3.2 megapixels3.2 megapixels 
FlashYes  
FeaturesDigital zoom  
CamcorderYesYes 
Hardware
Storage expansionmicroSD, microSDHC up to 32 GBmicroSD, microSDHC 
Battery
Talk time 4.00 hours
the average is 12 h (746 min)
 
Stand-by time 20.8 days (500 hours)
the average is 21 days (502 h)
 
Capacity1000 mAh1000 mAh 
specifications continue after the ad
Multimedia
RadioFM, Recording optionFM, Recording option 
SpeakersLoudspeakerEarpiece 
Internet browsing
Browser Opera Mini 6 
Built-in online services supportFacebook, YouTube (upload)Facebook, Twitter 
Technology
GSM900, 1800 MHz850, 900, 1800 MHz 
DataEDGE, GPRSEDGE 
Multiple SIM cards 2 slots 
Connectivity
BluetoothYesYes 
USB Yes 
Other Tethering, Computer sync 
Other features
Notifications Music ringtones (MP3, AMR, MIDI), Polyphonic ringtones (64 voices), Vibration, Speakerphone 

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

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