| Name | Nokia Lumia 820
 | Celkon A225
 |
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| Processor: | Dual-core 1.5Ghz Snapdragon S4 | Dual Core 1 GHz |
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| Chipset: | | Mediatek MT6577 |
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| GPU: | Adreno 225 | Notknown |
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| Operating System: | Windows | Android |
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| Operating System Version: | Windows Phone 8 OS | Android v4.0 (IceCreamSandwich) |
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| Sensors: | Accelerometer, proximity, compass | Accelerometer |
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| Manufacturer: | Nokia | Cellkon |
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| Series Name: | Lumia | Not given |
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| Weight: | 160 g | Not given |
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| Dimensions: | 123.8 x 68.5 x 9.9 mm | Not known |
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| Camera Type: | Back Camera | Dual Camera |
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| Front Camera: | N/A | 8 Mega Pixel |
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| Back Camera: | 5 MP camera with LED flash | 2 Mega Pixel |
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| Camera features: | Autofocus, LED flash | LED Flash and Auto Focus and Digital Zoom |
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| Video Camera features: | 30fps | Not given |
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| RAM: | 1000 MB | 512 MB |
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| External Memory: | 8 GB | 32 GB via mocro SD card slot |
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| Internal Storage: | 8GB and 7GB in SkyDrive | 4 GB |
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| Screen Size: | 4.3 inch AMOLED, ClearBlack | 4.7 inches |
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| Ports: | USB 2.0 | |
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| Display: | 800 x 480 pixel | Capacitive touch screen |
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| Battery Type: | 1650mAh - BP-5T | 2100 mAh |
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| Battery (Talk Time): | 14 h | Not known |
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| Battery (Standby Time): | 330 h | Not known |
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| Video: | 30fps | Not known |
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| Audio: | 3.5 mm Jack and Speaker | Not known |
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| Accessories: | Handset, Battery, Charger, Earphone, User Manual, Warranty Card | Headset, Handset, USB Cable with Charger, Battery |
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| Network: | GSM 850, 900, 1800, 1900 WCDMA Band V (850) WCDMA Band VIII (900) WCDMA Band II (1900) WCDMA Band I (2100) | EDGE, GPRS, Wi-Fi and 3G, Bluetooth |
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| Connectivity: | WLAN IEEE802.11 b/g/n with 2.4 GHz | |
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| Bluetooth: | 3.0 | Yes |
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| GPRS: | Yes | Yes |
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| Available Colors: | Black, Grey, White | Black |
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| Announced/Launched Date: | NA | Jan., 2013 |
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| Built-in Apps: | Windows 7.5 related apps | GPS and FM radio |
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| SIM Slots: | | Dual SIM |
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| SIM Card Type: | Regular SIM | Regular SIM |
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| Price Range: | US$100 to US$199 | US$100 to US$199 |
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| Category: | Basic Smartphone | Basic Smartphone |
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| Sensors: Accelerometer: | | Yes |
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| Sensors: Gyroscope: | | No |
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| Sensors: GPS: | | Yes |
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| Sensors: Compass: | | No |
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| Sensors: Barometer: | | No |
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| Read Nokia Lumia 820 reviews. | Read Celkon A225 reviews. |
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| Compare Nokia Lumia 820: HTC 8SSamsung Galaxy Y DUOS LiteNokia Lumia 510Nokia Lumia 610Nokia Asha 305LG Optimus L5 Dual E615LG Optimus L3 Dual E405Lenovo A60+Lenovo P700iLenovo S560Micromax Ninja 3.0Micromax A100Micromax A87 Sony Xperia X8 WhiteNokia Lumia 610 NFCLG E510Samsung Wave YSamsung Wave 3Karbonn A9+Karbonn A9Micromax A110 Canvas 2Nokia Asha 310LG Optimus L7 IIBlackBerry Q10Celkon A225 | Compare Celkon A225: HTC 8SSamsung Galaxy Y DUOS LiteNokia Lumia 510Nokia Lumia 610Nokia Asha 305Nokia Lumia 820LG Optimus L5 Dual E615LG Optimus L3 Dual E405Lenovo A60+Lenovo P700iLenovo S560Micromax Ninja 3.0Micromax A100Micromax A87 Sony Xperia X8 WhiteNokia Lumia 610 NFCLG E510Samsung Wave YSamsung Wave 3Karbonn A9+Karbonn A9Micromax A110 Canvas 2Nokia Asha 310LG Optimus L7 IIBlackBerry Q10 |