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Karbonn A9 vs Karbonn A21

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Karbonn A9

Posted: 03 Jan 2013
Market Status: Released

Karbonn A21

Posted: 16 Jan 2013
Market Status: Released

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Design
Device type	Smart phone	Smart phone
OS	Android (2.3.6)	Android (4.0)
Form factor	Candybar	Candybar
Dimensions	4.72 x 2.38 x 0.44 inches (120 x 60.5 x 11.3 mm)
Colors	White	White

Display
Physical size	3.8 inches	4.5 inches
Resolution	480 x 800 pixels	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.	246 ppi	207 ppi
Touchscreen	Capacitive, Multi-touch	Capacitive, Multi-touch

Battery
Talk time	4.00 hours the average is 10 h (623 min)	5.00 hours the average is 10 h (623 min)
Stand-by time	8.3 days (200 hours) the average is 18 days (434 h)	8.3 days (200 hours) the average is 18 days (434 h)
Capacity	1600 mAh	1800 mAh

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 MHz	Dual 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.	512 MB RAM
Built-in storage		4 GB
Storage expansion	microSD, microSDHC up to 32 GB	microSD, microSDHC up to 32 GB

Camera
Camera	5 megapixels	5 megapixels
Flash	Yes	LED
Features	Auto focus	Auto focus, Face detection
Camcorder	Yes	Yes
Front-facing camera	Yes	1.3 megapixels

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Multimedia
Music player
Filter by	Album, Artist, Playlists	Album, Artist, Playlists
Features	Album art cover, Background playback	Album art cover, Background playback
Supported formats	MP3, AAC, AAC+, WAV, AMR, MIDI	MP3, AAC, AAC+, WAV, AMR, MIDI
Video playback
Supported formats	MPEG4, H.263, H.264, AVI, 3GP	MPEG4, H.263, H.264, 3GP
Radio	FM
Speakers		Loudspeaker
Streaming		Audio, Video
Broadcast Mobile TV		Yes

Internet browsing
Browser	supports: supports: HTML, WAP	supports: supports: HTML, WAP
Built-in online services support	YouTube (upload), Picasa	YouTube (upload), Picasa

Technology
GSM	900, 1800 MHz	900, 1800, 1900 MHz
UMTS		2100 MHz
Data	UMTS, EDGE, GPRS	HSDPA 7.2 Mbit/s, UMTS, EDGE, GPRS
Multiple SIM cards	2 slots	2 slots
Global Roaming		Yes
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	GPS, A-GPS
Navigation	Yes	Yes

Phone features
Phonebook	Caller groups, Multiple numbers per contact, Search by both first and last name, Picture ID, Ring ID	Caller groups, Multiple numbers per contact, Search by both first and last name, Picture ID, Ring ID
Organizer	Calendar, Alarm, Calculator, Currency converter, World clock, Stopwatch	Alarm, Calculator, World clock, Stopwatch
Messaging	SMS, MMS, Threaded view, Predictive text input	SMS, MMS, Threaded view, Predictive text input
E-mail	IMAP, POP3, SMTP	IMAP, POP3, SMTP
Instant Messaging	Google Talk	Google Talk
Games	Yes	Yes

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

Other features
Notifications	Music ringtones, Vibration	Music ringtones, Vibration
Sensors	Accelerometer
Other	Voice dialing, Voice commands, Voice recording	Voice dialing, Voice commands, Voice recording

Nokia Lumia 925
- Announced: 14 May 2013
- OS: Windows Phone 8
- Hardware: Dual core, 1500 MHz, Krait, 1024 MB RAM
- Display: 4.5 inches, 768 x 1280 pixels, Capacitive Touchscreen
- Camera 8.7 megapixels, 1920x1080 (1080p HD) video
- Battery: 18.3 hours of Talk Time, 432 hours of Stand-by
- Technology: GSM (850 900 1800 1900)
- Data: LTE Cat3 Downlink 100 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s
BlackBerry Q5
- Announced: 4 days ago
- OS: BlackBerry
Sony Xperia ZR
- Announced: 4 days ago
- OS: Android 4.1
- Hardware: Quad core, 1500 MHz, 2048 MB RAM
- Display: 4.5 inches, 720 x 1280 pixels, Capacitive Touchscreen
- Camera 13 megapixels, 1920x1080 (1080p HD) video
- Technology: GSM (850 900 1800 1900)
- Data: HSPA (unspecified) UMTS EDGE GPRS
Nokia Lumia 928
- Announced: 10 May 2013
- OS: Windows Phone 8
- Hardware: Dual core, 1500 MHz, Krait, 1024 MB RAM
- Display: 4.5 inches, 768 x 1280 pixels, Capacitive Touchscreen
- Camera 8.7 megapixels, 1920x1080 (1080p HD) video
- Battery: 16.2 hours of Talk Time, 606 hours of Stand-by
- Technology: GSM (850 900 1800 1900), CDMA (800 1900)
- Data: LTE Cat3 Downlink 100 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s UMTS EDGE GPRS EV-DO Rev.A
Vertu Ti
- Posted: 09 May 2013
- OS: Android 4.0
- Hardware: Dual core, 1700 MHz, 1024 MB RAM
- Display: 3.7 inches, 480 x 800 pixels, Capacitive Touchscreen
- Camera 8 megapixels, 1920x1080 (1080p HD) video
- Battery: 7.3 hours of Talk Time, 200 hours of Stand-by
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA+ (4G) 42.2 Mbit/s HSUPA 5.76 Mbit/s EDGE GPRS
Nokia Asha 501
- Announced: 09 May 2013
- Hardware: 64 MB RAM
- Display: 3.0 inches, 240 x 320 pixels, Capacitive Touchscreen
- Camera 3.2 megapixels, 320x240 (QVGA) video
- Battery: 17 hours of Talk Time, 1152 hours of Stand-by
- Technology: GSM (900 1800)
- Data: EDGE GPRS
Samsung Galaxy Core
- Announced: 06 May 2013
- OS: Android 4.1
- Hardware: Dual core, 1200 MHz, 1024 MB RAM
- Display: 4.3 inches, 480 x 800 pixels, Capacitive Touchscreen
- Camera 5 megapixels, 720x480 (DVD) video
- Technology: GSM (850 900 1800 1900)
- Data: HSPA (unspecified) HSUPA 5.76 Mbit/s UMTS EDGE GPRS
Samsung Galaxy Tab 3
- Announced: 29 Apr 2013
- OS: Android 4.1
- Hardware: Dual core, 1200 MHz, 1024 MB RAM
- Display: 1024 x 600 pixels, Capacitive Touchscreen
- Camera 3 megapixels
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA+ (4G) 21.1 Mbit/s HSUPA 5.76 Mbit/s UMTS EDGE GPRS