Phone Comparison - Xiaomi Redmi 1S vs OPPO Neo R831K vs Asus Zenfone C ZC451CG
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| Manufacturer | Xiaomi | Oppo | Asus |
| Announced | May 2014 | August 2014 | January 2015 |
| Status | Available - May 2014 | Available - August 2014 | Available - February 2015 |
| Price | - | - | Rs. 5,999 ($88.22) [Similarly Priced] |
| Colors | Black, Chinese Red, Metallic Gray/ blue, green, yellow panels | White, Black | Charcoal Black, Pearl White, Cherry Red |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
136.5 x 67 x 10.9 mm (5.37 x 2.64 x 0.43 in) |
| Weight | 158 g (5.57 oz) | 130 g (4.59 oz) | 149 g (5.26 oz) |
| 2G Network | GSM 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 1900 / 2100 | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| Messaging | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
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| OS | Android OS, v4.3 (Jelly Bean) | Android OS, v4.2.2 (Jelly Bean) based Color OS | Android OS, v4.4.2 (KitKat) |
| Processor | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon | Dual-core 1.3 GHz | Dual-core 1.2 GHz, Intel Atom Z2520 |
| GPU | Adreno 305 | - | PowerVR SGX544MP2 |
| RAM | 1 GB | 1 GB | 1 GB |
| Internal Memory | 8 GB | 4 GB | 8 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, Corning Gorilla Glass 2 | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.7 inches | 4.5 inches | 4.5 inches |
| Resolution | 720 x 1280 pixels (312 ppi) | 480 x 854 pixels (218 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 64.61% | 64.07% | 60.85% |
| 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 | 5 MP, 2592 x 1944 pixels | 5 MP, 2592 х 1944 pixels |
| Flash | LED flash | 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 Detection, HDR | Auto focus, Yes |
| Video | 1080p@30fps | Yes | Yes |
| Front Camera | 1.3 MP, 720p@30fps [Similar] | Yes, 2 MP [Similar] | VGA [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, HSUPA | HSPA+ | HSPA 42.2/5.76 Mbps |
| Bluetooth | v4.0, A2DP, LE | v2.1, A2DP | v4.0, A2DP, EDR |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, hotspot |
| USB | microUSB v2.0, USB On-the-go | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML | HTML |
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| Internal | 8 GB, 1 GB RAM | 4 GB, 1 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 32 GB | microSD, up to 64 GB |
| USB OTG | 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 | Li-Ion Battery | Li-Ion Battery |
| Capacity | 2000 mAh | 1900 mAh | 2100 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
