| Name | HTC 8X
 | Karbonn A21
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| Processor: | Qualcomm MSM8960 Snapdragon | 1.2 GHz Qualcomm Scorpion Dual Core |
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| GPU: | Adreno 225 | No GPU |
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| Operating System: | Windows | Android |
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| Operating System Version: | Windows Phone 8 | Ice Cream Sandwich (4.0) |
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| Sensors: | Accelerometer, proximity, compass | Light Sensor, 3D G-Sensor and Proximity Sensor |
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| Manufacturer: | HTC | Karbonn |
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| Series Name: | HTC 8 | Karbonn A |
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| Dimensions: | 132.4 x 66.2 x 10.1 mm | N/A |
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| Weight: | 130 g | 130g |
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| Camera Type: | Dual Camera | Dual Camera |
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| Front Camera: | 2.1 | 1.3 Mega Pixels |
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| Back Camera: | 8 megapixel | 5 Mega Pixels |
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| Camera features: | Geo-tagging, touch focus | 2592 x 1944 pixels resolution, HD images, LED Flash, Auto Focus, Face Detection, Digital Zooming etc. |
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| Video Camera features: | 1080p@30fps, continuous autofocus, video light | Camera can capture videos in MP4, H.263, H.264, AVI and 3GP formats. |
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| RAM: | 1 GB | 1GB |
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| External Memory: | 32GB supported | Up to 32 GB |
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| Internal Storage: | 16 GB storage (12 GB user available) | 4 GB Storage |
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| Screen Size: | 720 x 1280 pixels, 4.3 inches | 480 x 800 px |
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| Display: | S-LCD2 capacitive touchscreen, 16M colors | 4.5 inches TFT Capacitive Touchscreen |
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| Ports: | microUSB v2.0 | USB 2.0 |
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| Battery Type: | Li-Ion 1800 mAh, Standard battery | 1800 mAh |
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| Battery (Talk Time): | will update soon | 5 hours (2G) and 8 hours (3G) |
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| Battery (Standby Time): | will update soon | 200 hours (2G) and 290 hours (3G) |
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| Audio: | .aac, .amr, .m4a, .mp3, .wav, .asf, .wma (verison 9 and 10) | MIDI, WAV and MP3 |
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| Video: | 3gp, .3g2, .mp4, m4v, asf, .wmv (version 9 and 10) | MP4, AVI, 3GP, H.263 and H.264 |
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| Accessories: | Handset, Battery, Charger, Earphone, USB Cable, User Manual, Warranty Card | |
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| Network: | GSM 850 / 900 / 1800 / 1900, HSDPA 850 / 900 / 1900 / 2100 | 2G - GSM 850 / 900 / 1800 / 1900, 3G - HSDPA 850 / 1900 / 2100 |
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| Connectivity: | Bluetooth 2.1+EDR | 3G - HSDPA, 7.2 Mbps, Wi-Fi - 802.11 b/g/n, EDGE and A-GPS with Google Maps |
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| Bluetooth: | Wi-Fi: IEEE 802.11 a/b/g/n | v2.1 |
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| GPRS: | Yes | Yes |
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| Available Colors: | California Blue, Graphite Black, Flame Red, Limelight | Pearl White |
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| Announced/Launched Date: | Nov 2012 | September 2012 |
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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 |
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| SIM Card Type: | Regular SIM | Regular SIM |
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| SIM Slots: | | Dual SIM |
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| Category: | Mid range Smartphone | Mid range Smartphone |
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| Price Range: | US$200 to US$250 | US$100 to US$199 |
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| Read HTC 8X reviews. | Read Karbonn A21 reviews. |
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| Compare HTC 8X:
Samsung 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 HDLava XOLO A1000 | 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 |