Phone Comparison - Xiaomi Redmi 1S vs Xiaomi Mi 3 vs OPPO Neo R831K
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| Manufacturer | Xiaomi | Xiaomi | Oppo |
| Announced | May 2014 | September 2013 | August 2014 |
| Status | Available - May 2014 | Available - December 2013 | Available - August 2014 |
| Colors | Black, Chinese Red, Metallic Gray/ blue, green, yellow panels | Various | White, Black |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) |
144 x 73.6 x 8.1 mm (5.67 x 2.9 x 0.32 in) |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
| Weight | 158 g (5.57 oz) | 145 g (5.11 oz) | 130 g (4.59 oz) |
| 2G Network | GSM 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.4 (KitKat) optimized with MIUI version 5 | Android OS, v4.2.2 (Jelly Bean) based Color OS |
| Processor | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon | Quad-core 2.3 GHz Krait 400, Qualcomm MSM8274AB Snapdragon 800 | Dual-core 1.3 GHz |
| GPU | Adreno 305 | Adreno 330 | - |
| RAM | 1 GB | 2 GB | 1 GB |
| Internal Memory | 8 GB | 16/64 GB | 4 GB |
| External Memory | microSD, up to 32 GB | No | microSD, up to 32 GB |
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| Type | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 5.0 inches | 4.5 inches |
| Resolution | 720 x 1280 pixels (312 ppi) | 1080 x 1920 pixels (441 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 64.61% | 64.90% | 64.07% |
| 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 | 8 MP, 3264 x 2448 pixels | 13 MP, 4128 x 3096 pixels | 5 MP, 2592 x 1944 pixels |
| Flash | LED flash | dual-LED flash | LED Flash |
| Features | Auto focus, 1.4 µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR | Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR |
| Video | 1080p@30fps | 1080p@30fps, HDR | Yes |
| Front Camera | 1.3 MP, 720p@30fps [Similar] | 2 MP, 1080p@30fps [Similar] | Yes, 2 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, HSUPA | DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps | HSPA+ |
| Bluetooth | v4.0, A2DP, LE | v4.0, A2DP | v2.1, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | microUSB v2.0, USB On-the-go | microUSB v2.0 (MHL), USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML |
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| Internal | 8 GB, 1 GB RAM | 16/64 GB, 2 GB RAM | 4 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | microSD, up to 32 GB |
| USB OTG | Supported | Supported | - |
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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-Po Battery | Non-removable Li-Ion Battery | Li-Ion Battery |
| Capacity | 2000 mAh | 3050 mAh | 1900 mAh |
| Stand by | - | Up to 500 h | - |
| Talk Time | - | Up to 4 h | - |
