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Karbonn A9 vs Karbonn A21 Size compare

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Karbonn A9 Remove phone

Posted: 03 Jan 2013
Market Status: Released
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Karbonn A21 Remove phone

Posted: 16 Jan 2013
Market Status: Released

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Design
Device typeSmart phoneSmart phone 
OSAndroid (2.3.6)Android (4.0) 
Dimensions4.72 x 2.38 x 0.44 inches (120 x 60.5 x 11.3 mm)  
ColorsWhiteWhite 
Display
Physical size3.8 inches4.5 inches 
Resolution480 x 800 pixels480 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.

246 ppi207 ppi 
Screen-to-body ratio

Screen-to-body ratio - Shows what part of the frontal area of a phone its screen occupies.

56.71 %  
Camera
Camera5 megapixels5 megapixels 
FlashYesLED 
Hardware FeaturesAutofocusAutofocus 
Software Features Face detection 
CamcorderYesYes 
Front-facing cameraYes1.3 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.

Single core, 1000 MHzDual-core, 1200 MHz 
System memory

System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.

0.5 GB RAM  
Built-in storage

Built-in storage - Bigger storage capacity allows you to keep more content saved onto your device, such as more applications, photos or video. Games and video content typically take up the biggest amount of storage space.

 4 GB 
Storage expansion

Storage expansion - Some handsets allow you to expand their storage capacity by using a memory expansion card – most often microSD. Expansion memory is mostly suitable for media storage, such as photo, video or music content.

microSD, microSDHC up to 32 GBmicroSD, microSDHC up to 32 GB 
Battery
Capacity

Capacity - The bigger, the better! However, battery capacity is not the only factor that has an effect on battery life. Those include the chipset in use, the software running on the device, as well as the consumer's unique usage pattern.

1600 mAh1800 mAh 
TypeUser replaceableUser replaceable 
Talk time4.00 hours
the average is 20 h (1190 min)
5.00 hours
the average is 20 h (1190 min)
 
Stand-by time8.3 days (200 hours)
the average is 19 days (463 h)
8.3 days (200 hours)
the average is 19 days (463 h)
 
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Multimedia
Music player   
Filter byAlbum, Artist, PlaylistsAlbum, Artist, Playlists 
FeaturesAlbum art cover, Background playbackAlbum art cover, Background playback 
RadioFM  
Speakers Loudspeaker 
Broadcast Mobile TV Yes 
Cellular
GSM900, 1800 MHz900, 1800, 1900 MHz 
UMTS 2100 MHz 
DataUMTSHSDPA 7.2 Mbit/s, UMTS 
Multiple SIM cards2 slots2 slots 
Phone features
SensorsAccelerometer  
NotificationsMusic ringtones, VibrationMusic ringtones, Vibration 
Other featuresVoice dialing, Voice commands, Voice recordingVoice dialing, Voice commands, Voice recording 
Connectivity
BluetoothYesYes 
Wi-Fi802.11 b, g, n802.11 b, g, n 
USBYesYes 
ConnectormicroUSBmicroUSB 
FeaturesMass storage device, USB chargingMass storage device, USB charging 
Positioning

Positioning - This field shows the positioning systems supported by the device. The most common types are GPS and A-GPS. 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.

GPSGPS, A-GPS 
NavigationYesYes 

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

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