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Brief information about compared phones: Celkon A63 , O2 XDA CometCelkon A63 2013 year of release. cpu Dual-core 1.2 GHz. screen 4". with resolution 480x800. Smartphone has 0 megapixel front camera and 3 megapixel main camera . O2 XDA Comet 2007 year of release. cpu Intel XScale PXA 270 620 MHz. screen 2.7". with resolution 240x320. Smartphone has 0 megapixel front camera and 2 megapixel main camera . |
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| Display | Technology | TFT | TFT | |
| Touchscreen | capacitive touchscreen | resistive touchscreen | ||
| Display colors | 65K | |||
| Screen size | 4" inch | 2.7" inch | ||
| Screen area | 45.5 cm2 | 22.6 cm2 | ||
| Screen format | 5:3 (height:width) | 4:3 (height:width) | ||
| Screen to body ratio | % | 36.7% | ||
| Screen resolution | 480 x 800 px | 240 x 320 px | ||
| PPI /points per inch/ | 233 PPI | 148 PPI | ||
| Camera and Video | Rear camera, main | 3.15 MP, Single | 2 MP, Single | |
| Camera specs | 3.15 MP | 2 MP | ||
| Functions | LED flash | |||
| Video | Yes | Yes | ||
| Front camera, selfie | 0.3 MP, Single | 0.3 MP, Single | ||
| Specifications | VGA | VGA videocall camera | ||
| Performance | Operating system OS | Android 4.2.0 (Jelly Bean) | Microsoft Windows Mobile 6.0 Professional | |
| Processor CPU | Dual-core 1.2 GHz | Intel XScale PXA 270 620 MHz | ||
| External memory | microSD, up to 32 GB (dedicated slot) | miniSD | ||
| Internal memory | 512 MB, 256 MB RAM | 64 MB RAM, 1 GB ROM | ||
| General specs | Release date | 2013, August | 2007, September | |
| Dimensions (HxWxD) | Х Х mm | 106 Х 58 Х 19 mm | ||
| Weight | 0 g | 145 g | ||
| Colors | Black | Silver | ||
| Battery | 1500 mAh, Li-Ion | 0 mAh, | ||
| Approximate price | 50 EUR | |||
| Battery life | Stand by time- Up to 200 h Talking time- Up to 6 h | |||
| Communication and Connectivity | SIM card | Dual SIM (Mini-SIM) | Mini-SIM | |
| Network | Show all network frequencies: | Show all network frequencies: -2G - GSM 900 / 1800 / 1900 | ||
| Speed | HSPA | |||
| GPRS | Class 12 | Class 10 | ||
| Edge | Class 12 | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11b/g | ||
| GPS | No | No | ||
| NFC | ||||
| USB | microUSB 2.0 | miniUSB | ||
| Bluetooth | Yes | 1.2 | ||
| Harmful irradiation | SAR EU - 0.91 W/kg (head) 0.63 W/kg (body) | |||
| Music and Audio | Radio | Stereo FM radio, RDS | ||
| Headphone jack | Yes | No | ||
| Others | Handwriting recognition | |||
| Other features | Dop | Sensors Proximity, gyro | , Infrared port - Pocket Office -Voice memo -MP3/AAC player | |
