Phone Comparison - OPPO Neo R831K vs Lenovo A536 vs Samsung Galaxy S Duos 3
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| Manufacturer | Oppo | Lenovo | Samsung |
| Announced | August 2014 | September 2014 | February 2015 |
| Status | Available - August 2014 | Available - September 2014 | Available - February 2015 |
| Price | - | - | Rs. 5,300 ($77.94) [Similarly Priced] |
| Colors | White, Black | Black, White | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
139.6 x 72 x 9.95 mm (5.5 x 2.83 x 0.39 in) |
121.4 x 62.9 x 10.8 mm (4.78 x 2.48 x 0.43 in) |
| Weight | 130 g (4.59 oz) | 149 g (5.26 oz) | 124 g (4.37 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 900 / 2100 | HSDPA 900 / 2100 |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) based Color OS | Android OS, v4.4.2 (KitKat) | Android OS, v4.4 (KitKat) |
| Processor | Dual-core 1.3 GHz | Quad-core 1.3 GHz, Mediatek MT6582M | Dual-core 1.2 GHz Cortex-A7 |
| GPU | - | Mali-400MP2 | - |
| RAM | 1 GB | 1 GB | 512 MB |
| Internal Memory | 4 GB | 8 GB ROM | 4 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 64 GB |
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| Type | IPS LCD capacitive touchscreen | TFT Capacitive Touchscreen | TFT capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.0 inches | 4.0 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 480 x 854 pixels (196 ppi) | 480 x 800 pixels (233 ppi) |
| Screen-to-Body Ratio | 64.07% | 68.49% | 59.76% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM Radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 5 MP, 2592 x 1944 pixels | 5 MP, 2592 x 1944 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED Flash | LED Flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR | Auto focus, Geo-tagging |
| Video | Yes | Yes | 720p@30fps |
| Front Camera | Yes, 2 MP [Similar] | Yes, 2 MP [Similar] | No [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA 21.1/5.76 Mbps |
| Bluetooth | v2.1, A2DP | v4.0 | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML | HTML |
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| Internal | 4 GB, 1 GB RAM | 8 GB ROM, 1 GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 64 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 | Li-Ion Battery | Li-Po Battery | Li-Ion Battery |
| Capacity | 1900 mAh | 2000 mAh | 1500 mAh |
| Stand by | - | Up to 300 h | - |
| Talk Time | - | Up to 15 h 30 min | - |
