Phone Comparison - OPPO Neo R831K vs Xiaomi Redmi Note 2 Prime vs Xiaomi Redmi 3
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| Manufacturer | Oppo | Xiaomi | Xiaomi |
| Announced | August 2014 | August 2015 | January 2016 |
| Status | Available - August 2014 | Available - August 2015 | Available - January 2016 |
| Price | - | Rs. 10,840 ($159.00) [Similarly Priced] | Rs. 6,999 ($102.93) [Similarly Priced] |
| Colors | White, Black | White, Blue, Yellow, Pink, Mint Green | Dark Grey, Silver, Classic Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
152 x 76 x 8.3 mm (5.98 x 2.99 x 0.33 in) |
139.3 x 69.6 x 8.5mm (5.48 x 2.74 x 0.33in) |
| Weight | 130 g (4.59 oz) | 160 g (5.64 oz) | 144 g (5.08 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 TD-SCDMA |
GSM 850 / 900 / 1800 / 1900 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700 / 1900 / 2100 |
| 4G Network | - | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE 700 / 1700 / 2600 /2300/2100/1800 |
| 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, v5.0 (Lollipop) | Android OS, v5.1.1 (Lollipop) |
| Processor | Dual-core 1.3 GHz | Octa-core 2.2 GHz Cortex-A53, Mediatek MT6795 | Quad-core 1.5 GHz Cortex-A53 & quad-core 1.2 GHz Cortex-A53, Qualcomm Snapdragon 616 |
| GPU | - | PowerVR G6200 | Adreno 405 |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 4 GB | 32 GB | 16 GB |
| External Memory | microSD, up to 32 GB | Yes | microSD, up to 128 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.5 inches | 5.0 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 64.07% | 72.02% | 70.95% |
| 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 | 13 MP, 4128 x 3096 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED Flash | Yes | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Phase Detection Auto-focus (PDAF), Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama | Phase Detection Auto focus, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR |
| Video | Yes | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | 5 MP, 720p [Similar] | Yes, 5 MP, 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSPA, LTE | HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL |
| Bluetooth | v2.1, A2DP | v4.0, A2DP, LE | Yes, v4.1 with 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, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, DLNA, Wi-Fi hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | Yes, microUSB v2.0, USB On-the-go, USB Host |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS support and GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB, 1 GB RAM | 32 GB, 2 GB RAM | 16 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | Yes | microSD, up to 128 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-Ion Battery | Li-Po Battery | Non-removable Li-Po Battery |
| Capacity | 1900 mAh | 3060 mAh | 4100 mAh |
| Stand by | - | Up to 144 h (3G) | - |
| Talk Time | - | Up to 11 h 30 min (3G) | - |
