Phone Comparison - Apple iPhone 3G vs Samsung Galaxy S Duos 2 S7582 vs OPPO Joy
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| Manufacturer | Apple | Samsung | Oppo |
| Announced | June 2008 | November 2013 | April 2014 |
| Status | Discontinued | Available - November 2013 | Available - April 2014 |
| Colors | Black(8/16 GB), White (16 GB) | White, Black | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.5 x 62.1 x 12.3 mm (4.55 x 2.44 x 0.48 in) |
121.5 x 63.1 x 10.57 mm (4.78 x 2.48 x 0.42 in) |
124 x 63 x 9.9 mm (4.88 x 2.48 x 0.39 in) |
| Weight | 133 g (4.69 oz) | 118 g (4.16 oz) | 125 g (4.41 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 / 1900 / 2100 | HSDPA 900 / 2100 | HSDPA 2100 |
| Messaging | SMS, MMS | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
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| OS | iPhone OS, upgradable to iOS 4 | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) |
| Processor | 412 MHz ARM 11 | Dual-core 1.2 GHz Cortex-A9, Broadcom BCM21664 | Dual-core 1.3 GHz |
| GPU | PowerVR MBX | Broadcom VideoCore IV | - |
| RAM | 128 MB | 768 MB | 512 MB |
| Internal Memory | 8 GB/ 16 GB storage | 4 GB (1.9 GB user available) | 4 GB ROM |
| External Memory | No | microSD, up to 32 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT Capacitive Touchscreen, PLS | TFT Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 4.0 inches | 4.0 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (233 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 50.75% | 59.52% | 58.42% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | Stereo FM radio with RDS | FM radio |
| Games | Yes | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 2 MP, 1600x1200 pixels | 5 MP, 2592х1944 pixels | 3 MP, 2048 x 1536 pixels |
| Flash | No | LED flash | LED flash |
| Features | Auto focus, Geo-tagging | Geo-tagging, Face Detection, Panorama | |
| Video | No | Yes, 720p@30fps | Yes, 720p |
| Front Camera | No [Similar] | Yes, VGA [Similar] | Yes, VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps |
| Bluetooth | Yes, v2.0 with A2DP, headset support only | Yes, v4.0 with A2DP | Yes, v2.0 A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11b/g | 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, 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 | HTML (Safari) | HTML5 | HTML |
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| Internal | 8 GB/ 16 GB storage, 128 MB RAM | 4 GB (1.9 GB user available), 768 MB RAM | 4 GB ROM, 512 MB RAM |
| Expandable Storage | No | 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-Ion Battery |
| Capacity | 1500 mAh | 1700 mAh | |
| Stand by | Up to 300 h | Up to 280 h (3G) | - |
| Talk Time | Up to 10 h | Up to 8 h (3G) | - |
