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Brief information about compared phones: Celkon A87 , QMobile A1Celkon A87 2013 year of release. cpu 1.0 GHz. screen 4". with resolution 480x800. Smartphone has 0 megapixel front camera and 5 megapixel main camera . QMobile A1 2015 year of release. cpu Quad-core 1.3 GHz Cortex-A7. screen 4.5". with resolution 480x854. Smartphone has 2 megapixel front camera and 5 megapixel main camera . |
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| Display | Technology | IPS LCD | ||
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 4.5" inch | ||
| Screen area | 45.5 cm2 | 44.2 cm2 | ||
| Screen format | 5:3 (height:width) | 16:9 (height:width) | ||
| Screen to body ratio | % | 50.0% | ||
| Screen resolution | 480 x 800 px | 480 x 854 px | ||
| PPI /points per inch/ | 233 PPI | 245 PPI | ||
| Camera and Video | Rear camera, main | 5 MP, Single | 5 MP, Single | |
| Camera specs | 5 MP, AF | 5 MP, AF | ||
| Functions | LED flash | |||
| Video | Yes | 1080p@30fps | ||
| Front camera, selfie | 0.3 MP, Single | 2 MP, Single | ||
| Specifications | VGA | 2 MP | ||
| Performance | Operating system OS | Android 2.3.6 (Gingerbread) | Android 5.1 (Lollipop), upgradable to 6.0 (Marshmallow) | |
| Chipset | Spreadtrum 6820 | Mediatek MT6582 (28 nm) | ||
| Processor CPU | 1.0 GHz | Quad-core 1.3 GHz Cortex-A7 | ||
| Graphics processor GPU | Mali-400MP2 | |||
| External memory | microSD, up to 32 GB (dedicated slot) | microSD, up to 64 GB | ||
| Internal memory | 512 MB, 512 MB RAM | 8 GB, 1 GB RAM | ||
| General specs | Release date | 2013, January | 2015, July | |
| Dimensions (HxWxD) | Х Х mm | 132 Х 67 Х 9.2 mm | ||
| Weight | 0 g | 138 g | ||
| Colors | Black, White | Black | ||
| Battery | 1450 mAh, Li-Ion | 1700 mAh, Li-Ion | ||
| Approximate price | 70 EUR | 100 EUR | ||
| Battery life | Stand by time- Up to 220 h Talking time- Up to 3 h | Stand by time- Up to 160 h (3G) Talking time- Up to 8 h (3G) | ||
| Communication and Connectivity | SIM card | Dual SIM (Mini-SIM) | Dual SIM | |
| Network | Show all network frequencies: | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | ||
| Speed | HSPA 42.2/11.5 Mbps | |||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, hotspot | ||
| GPS | No | Yes, with A-GPS | ||
| NFC | ||||
| USB | Proprietary | microUSB 2.0 | ||
| Bluetooth | Yes | 4.0, A2DP | ||
| Music and Audio | Radio | FM radio | Stereo FM radio | |
| Headphone jack | Yes | Yes | ||
| Other features | Dop | Sensors Accelerometer | Sensors Accelerometer, gyro, proximity, compass | |
