Phone Comparison - OPPO Neo R831K vs Meizu m1 note vs Xiaomi Mi 4i
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| Manufacturer | Oppo | Meizu | Xiaomi |
| Announced | August 2014 | December 2014 | April 2015 |
| Status | Available - August 2014 | Available - May 2015 | Available - April 2015 |
| Price | - | Rs. 6,999 ($102.93) [Similarly Priced] | Rs. 8,999 ($132.34) [Similarly Priced] |
| Colors | White, Black | White, Blue, Yellow, Green, Pink | Black, White, Blue, Yellow, Pink |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
132 x 65.8 x 9.2 mm (5.2 x 2.59 x 0.36 in) |
150.7 x 75.2 x 8.9 mm (5.93 x 2.96 x 0.35 in) |
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in) |
| Weight | 130 g (4.59 oz) | 145 g (5.11 oz) | 130 g (4.59 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | - | LTE 1800 / 2100 / 2600 (Bands 1, 3, 7) | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | Android OS, v4.2.2 (Jelly Bean) based Color OS | Android OS, v4.4.4 (KitKat) | Android OS, v5.0 (Lollipop) |
| Processor | Dual-core 1.3 GHz | Octa-core 1.7 GHz Cortex-A53, Mediatek MT6752 | Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615 |
| GPU | - | Mali-T760 | Adreno 405 |
| RAM | 1 GB | 2 GB | 2 GB |
| Internal Memory | 4 GB | 16/32 GB | 16/32 GB |
| External Memory | microSD, up to 32 GB | No | No |
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| Type | IPS LCD capacitive touchscreen | IGZO 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 (403 ppi) | 1080 x 1920 pixels (441 ppi) |
| Screen-to-Body Ratio | 64.07% | 72.69% | 71.57% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | No | 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, 4208 x 3120 pixels | 13 MP, 4128 x 3096 pixels |
| Flash | LED Flash | dual-LED (dual tone) | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR | Auto focus, 1/3.06'' Sensor Size, Geo-Tagging, Touch Focus, Face Detection, HDR, Panorama | Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR |
| Video | Yes | 1080p@30fps | 1080p@30fps |
| Front Camera | Yes, 2 MP [Similar] | 5 MP [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA+ | HSPA, LTE Cat4 150/50 Mbps | HSPA, LTE |
| Bluetooth | v2.1, A2DP | v4.0, A2DP, LE | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot |
| USB | microUSB v2.0 | microUSB v2.0 | microUSB v2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 4 GB, 1 GB RAM | 16/32 GB, 2 GB RAM | 16/32 GB, 2 GB RAM |
| Expandable Storage | microSD, up to 32 GB | No | No |
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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 | Non-removable Battery | Li-Po Battery |
| Capacity | 1900 mAh | 3140 mAh | 3120 mAh |
| Stand by | - | - | - |
| Talk Time | - | Up to 40 h | - |
