Phone Comparison - Apple iPhone 3G vs Samsung Galaxy Grand Neo vs OPPO Neo R831K
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| Manufacturer | Apple | Samsung | Oppo |
| Announced | June 2008 | January 2014 | August 2014 |
| Status | Discontinued | Available - February 2014 | Available - August 2014 |
| Colors | Black(8/16 GB), White (16 GB) | Black, White | 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) |
143.7 x 77.1 x 9.6 mm (5.66 x 3.04 x 0.38 in) |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
| Weight | 133 g (4.69 oz) | 163 g (5.75 oz) | 130 g (4.59 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 850 / 1900 / 2100 - SIM 1 only HSDPA 900 / 1900 / 2100 - SIM 1 only |
HSDPA 2100 |
| Messaging | SMS, MMS | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | iPhone OS, upgradable to iOS 4 | Android OS, v4.2 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) based Color OS |
| Processor | 412 MHz ARM 11 | Quad-core 1.2 GHz Cortex-A7, Broadcom BCM23550 | Dual-core 1.3 GHz |
| GPU | PowerVR MBX | Broadcom VideoCore IV | - |
| RAM | 128 MB | 1 GB | 1 GB |
| Internal Memory | 8 GB/ 16 GB storage | 16 GB ROM | 4 GB |
| External Memory | No | microSD, up to 64 GB | microSD, up to 32 GB |
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| Type | TFT capacitive touchscreen | TFT Capacitive Touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 3.5 inches | 5.0 inches | 4.5 inches |
| Resolution | 320 x 480 pixels (165 ppi) | 480 x 800 pixels (187 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 50.75% | 63.94% | 64.07% |
| 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 | 5 MP, 2592 x 1944 pixels |
| Flash | No | LED flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | |
| Video | No | Yes, 720p@30fps | Yes |
| Front Camera | No [Similar] | Yes, VGA [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA+ |
| Bluetooth | Yes, v2.0 with A2DP, headset support only | Yes, v4.0 with A2DP, LE, EDR | v2.1, A2DP |
| Wi-Fi | Wi-Fi 802.11b/g | Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | Yes, v2.0 | Yes, microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS support | Yes, with A-GPS, support and GLONASS | Yes, with A-GPS |
| Browser | HTML (Safari) | HTML5 | HTML |
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| Internal | 8 GB/ 16 GB storage, 128 MB RAM | 16 GB ROM, 1 GB RAM | 4 GB, 1 GB RAM |
| Expandable Storage | No | microSD, up to 64 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 | 2100 mAh | 1900 mAh | |
| Stand by | Up to 300 h | Up to 430 h | - |
| Talk Time | Up to 10 h | Up to 11 h | - |
