Phone Comparison - Nokia Lumia 820 vs Samsung Galaxy S Duos 2 S7582 vs Gionee Pioneer P4
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| Manufacturer | Nokia | Samsung | Gionee |
| Announced | Expected September 2012 | November 2013 | April 2014 |
| Status | Available - November 2012 | Available - November 2013 | Available - April 2014 |
| Colors | Black, Gray, Red, Yellow, White, Blue, Violet | White, Black | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
123.8 x 68.5 x 9.9 mm (4.87 x 2.7 x 0.39 in) |
121.5 x 63.1 x 10.57 mm (4.78 x 2.48 x 0.42 in) |
135 x 65.5 x 9.05 mm (5.31 x 2.58 x 0.36 in) |
| Weight | 160 g (5.64 oz) | 118 g (4.16 oz) | 128.7 g (4.52.0.25 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 900 / 2100 |
| 4G Network | LTE 800 / 1800 / 2600 / 2100/ 900 | - | - |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
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| OS | Microsoft Windows Phone 8 | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
| Processor | Dual-core 1.5 GHz Krait, Qualcomm MSM8960 Snapdragon | Dual-core 1.2 GHz Cortex-A9, Broadcom BCM21664 | Quad-core 1.3 GHz Cortex-A7, Mediatek MT6582V/X |
| GPU | Adreno 225 | Broadcom VideoCore IV | Mali-400MP2 |
| RAM | 1 GB | 768 MB | 1 GB |
| Internal Memory | 8 GB storage | 4 GB (1.9 GB user available) | 8 GB ROM |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | AMOLED capacitive touchscreen | TFT Capacitive Touchscreen, PLS | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.3 inches | 4.0 inches | 4.5 inches |
| Resolution | 480 x 800 pixels (217 ppi) | 480 x 800 pixels (233 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 62.04% | 59.52% | 62.93% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | Stereo FM radio with RDS | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels, Carl Zeiss Tessa | 5 MP, 2592х1944 pixels | 5 MP, 2592х1944 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging | Auto focus, Geo-tagging | Auto Focus, Face beauty, Panorama(Horizontal & Vertical), Eraser, Face detection, Geo-tagging, Touch focus, 99 snaps in one click, Gesture Shot, Smile Shot |
| Video | Yes | Yes, 720p@30fps | Yes, 1080p |
| Front Camera | Yes [Similar] | Yes, VGA [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes | Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps |
| Edge | Yes | Yes | Class 12 |
| 3G | HSDPA, 42 Mbps HSUPA, 5.76 Mbps LTE, Cat3, 50 Mbps UL, 100 Mbps DL |
HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | Yes |
| Bluetooth | Yes, v3.1 with A2DP, EDR | Yes, v4.0 with A2DP | Yes, v4.0 A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot |
| USB | Yes, microUSB v2.0 | Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 8 GB storage, 1 GB RAM | 4 GB (1.9 GB user available), 768 MB RAM | 8 GB ROM, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 32 GB |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Standard battery, Li-Ion | Standard battery, Li-Ion | Li-Po Battery |
| Capacity | 1650 mAh | 1500 mAh | 1800 mAh |
| Stand by | Up to 330 h (2G) Up to 330 h (3G) |
Up to 280 h (3G) | Up to 386 h |
| Talk Time | Up to 14 h (2G) Up to 8 h (3G) |
Up to 8 h (3G) | Up to 16 h 30 min (2G) Up to 11 h (3G) |
