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Karbonn KT21 Express vs Google Nexus 7

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Karbonn KT21 Express

Posted: 25 Apr 2012
Market Status: Released

Google Nexus 7

Also known as Asus Nexus Tablet, Google Nexus Tablet PA Rating - 9
User Rating - 9.3

Posted: 27 Jun 2012
Market Status: Released

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Design
Device type	Feature phone	Tablet
OS		Android (4.2.2, 4.2.1, 4.2, 4.1.2, 4.1.1, 4.1)
Form factor	Candybar	Candybar
Dimensions		7.81 x 4.72 x 0.41 inches (198.5 x 120 x 10.45 mm)
Weight		11.99 oz (340 g) the average is 4.4 oz (125 g)
Design features	Numeric keypad
Side Keys	Left: Camera shutter
Colors	Brown

Display
Physical size	2.8 inches	7.0 inches
Resolution		1280 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.		216 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.		IPS LCD
Colors		16 777 216
Touchscreen	Capacitive, Multi-touch	Capacitive, Multi-touch
Features	Proximity sensor	Light sensor, Proximity sensor, Scratch-resistant glass

Battery
Stand-by time		12.5 days (300 hours) the average is 18 days (434 h)
Video playback		9.00 hours
Capacity	1000 mAh	4325 mAh
Type	Li - Ion	Li - Polymer
Not user replaceable		Yes

Hardware
System chip System chip - Most modern handsets use an advanced chip that includes many of the device’s hardware modules like the processor, Wi-Fi, Bluetooth and sometimes even the wireless radio. This field shows what particular system chip (or System-on-a-Chip) is used in the phone.		NVIDIA Tegra 3 T30L
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.		Quad core, 1200 MHz, ARM Cortex-A9
Graphics processor		ULP GeForce @ 416MHz
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.		1024 MB RAM (1333 MHz) / LPDDR3
Built-in storage		8 GB
Storage expansion	microSD, microSDHC up to 32 GB

Camera
Camera	3.2 megapixels
Flash	Yes
Features	Digital zoom
Camcorder	Yes
Features		Video calling
Front-facing camera		Yes

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Multimedia
Music player
Filter by		Album, Artist, Playlists
Features		Album art cover, Background playback
Supported formats	MP3	MP3
Video playback
Supported formats		MPEG4, H.263, H.264
Radio	FM, Recording option
Speakers	Loudspeaker
Streaming		Audio, Video
YouTube player		Yes

Internet browsing
Browser	supports: supports: WAP	Chrome, supports: supports: HTML, HTML5
Built-in online services support	Facebook, YouTube (upload)	YouTube (upload), Picasa

Technology
GSM	900, 1800 MHz
Data	EDGE, GPRS
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
Navigation		Yes

Phone features
Phonebook	2000 entries	Unlimited entries
Organizer		Calendar, Alarm, Document viewer, Calculator
Messaging	SMS
E-mail	Yes	IMAP, POP3, SMTP, Microsoft Exchange
Instant Messaging	Yahoo!	Google Talk
JAVA JAVA - J2ME (Java 2 Platform, Micro Edition) is a technology that allows programmers to use the Java programming language and related tools to develop programs for mobile wireless information devices such as cellular phones and personal digital assistants (PDAs). J2ME consists of programming specifications and a special virtual machine, the K Virtual Machine, that allows a J2ME-encoded program to run in the mobile device.	Yes

Connectivity
Bluetooth	Yes	3.0
Wi-Fi		802.11 a, b, g, n
USB		USB 2.0
Connector		microUSB
Features		USB Host
Headphones connector	3.5mm	3.5mm
Charging connector		microUSB
Other		NFC, Computer sync, OTA sync

Other features
Notifications		Music ringtones (MP3), Polyphonic ringtones, Flight mode, Silent mode, Speakerphone
Sensors		Accelerometer, Gyroscope, Compass
Other		Voice commands, Voice recording

Availability
Officially announced		27 Jun 2012

LG Optimus F3
- Posted: 21 May 2013
- OS: Android 4.1.2
- Hardware: Dual core
- Display: 4.0 inches, 480 x 800 pixels, Capacitive Touchscreen
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: 15 May 2013
- OS: BlackBerry
- Hardware: Dual core, 1200 MHz, 2048 MB RAM
- Display: 3.1 inches, 720 x 720 pixels, Capacitive Touchscreen
- Camera 5 megapixels
Sony Xperia ZR
- Announced: 13 May 2013
- 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