| Name | Karbonn A21
 | HTC Desire 820Q
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| Processor: | 1.2 GHz Qualcomm Scorpion Dual Core | 1.2 GHz Quad-core |
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| Chipset: | | Snapdragon 410 |
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| GPU: | No GPU | Adreno 306 |
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| Operating System: | Android | Android |
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| Operating System Version: | Ice Cream Sandwich (4.0) | Android Kitkat |
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| Sensors: | Light Sensor, 3D G-Sensor and Proximity Sensor | Compass/ Magnetometer, Proximity, Accelerometer and Ambient light |
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| Series Name: | Karbonn A | Desire |
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| Manufacturer: | Karbonn | HTC |
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| Weight: | 130g | 155.00 g |
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| Dimensions: | N/A | 157.70 x 78.70 x 7.70 |
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| Camera Type: | Dual Camera | Dual Camera |
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| Front Camera: | 1.3 Mega Pixels | 8 MP |
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| Back Camera: | 5 Mega Pixels | 13 MP, accompanied by single LED flash and BSI sensor |
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| Camera features: | 2592 x 1944 pixels resolution, HD images, LED Flash, Auto Focus, Face Detection, Digital Zooming etc. | BSI Sensor, f2.2, 2.8 cm Lens |
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| Video Camera features: | Camera can capture videos in MP4, H.263, H.264, AVI and 3GP formats. | 1080p HD video recording |
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| RAM: | 1GB | 1 GB |
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| External Memory: | Up to 32 GB | Up to 128 GB |
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| Internal Storage: | 4 GB Storage | 16 GB |
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| Screen Size: | 480 x 800 px | 5.5 inches |
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| Display: | 4.5 inches TFT Capacitive Touchscreen | 5.5 inches with 1280 X 720 display resolution |
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| Ports: | USB 2.0 | |
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| Battery Type: | 1800 mAh | 2600 mAh Li-ion |
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| Battery (Talk Time): | 5 hours (2G) and 8 hours (3G) | 48 hours |
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| Battery (Standby Time): | 200 hours (2G) and 290 hours (3G) | 300+ hours |
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| Video: | MP4, AVI, 3GP, H.263 and H.264 | Pre-installed full HD video player |
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| Audio: | MIDI, WAV and MP3 | HTC BoomSound, Dual Frontal Stereo Speakers with Built-in Amplifiers, Sense Voice |
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| Accessories: | | Ear phone, 5 volt Battery charger, User manual |
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| Network: | 2G - GSM 850 / 900 / 1800 / 1900, 3G - HSDPA 850 / 1900 / 2100 | Wi-Fi, 3G |
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| GPRS: | Yes | Yes |
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| Connectivity: | 3G - HSDPA, 7.2 Mbps, Wi-Fi - 802.11 b/g/n, EDGE and A-GPS with Google Maps | microUSB v2.0, GPS, 3.5 mm audio jack, DLNA |
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| Bluetooth: | v2.1 | Bluetooth v4.0 |
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| Available Colors: | Pearl White | Santorini White, Milky-way Grey |
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| Announced/Launched Date: | September 2012 | September 2014 |
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| Built-in Apps: | Gmail, Twitter, Google Search, Google Play, Skype, Google Talk, Yahoo Messenger, Flickr, Picasa, Facebook, PayTM, NexGTv, WhatsApp, Mobile TV and Google Currents | HTC Connect, HTC BlinkFeed, HTC Sense |
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| SIM Slots: | Dual SIM | Dual SIM |
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| SIM Card Type: | Regular SIM | Nano SIM |
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| Category: | Mid range Smartphone | Mid range Smartphone |
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| Price Range: | US$100 to US$199 | US$251 to US$499 |
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| Sensors: Accelerometer: | | Yes |
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| Sensors: Gyroscope: | | Yes |
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| Sensors: GPS: | | Yes |
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| Sensors: Compass: | | Yes |
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| Sensors: Barometer: | | No |
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| Read Karbonn A21 reviews. | Read HTC Desire 820Q reviews. |
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| Compare Karbonn A21:
HTC 8XSamsung Galaxy S DUOSSamsung Galaxy Note IINokia Lumia 920Samsung Galaxy Victory Lenovo S880LG Optimus L5 E612LG Optimus L7 P705SONY Xperia USony Xperia PSony Ericsson Xperia ARC S LT18iNokia Lumia 810LG Optimus L9 P765LG E730Apple's iPhone 4SLava XOLO A700Karbonn A11Micromax A116 Canvas HDIntex Aqua StyleSamsung Galaxy S II plusSamsung Galaxy Grand Duos GT-i9082EWASony Xperia tipo dualSamsung Galaxy Fame S6810BLU Quattro 4.5 HDLava XOLO A1000 | Compare HTC Desire 820Q:
HTC 8XSamsung Galaxy S DUOSSamsung Galaxy Note IINokia Lumia 920Samsung Galaxy Victory Lenovo S880LG Optimus L5 E612LG Optimus L7 P705SONY Xperia USony Xperia PSony Ericsson Xperia ARC S LT18iNokia Lumia 810LG Optimus L9 P765LG E730Apple's iPhone 4SLava XOLO A700Karbonn A11Karbonn A21Micromax A116 Canvas HDIntex Aqua StyleSamsung Galaxy S II plusSamsung Galaxy Grand Duos GT-i9082EWASony Xperia tipo dualSamsung Galaxy Fame S6810BLU Quattro 4.5 HD |