Phone Comparison - Oppo U3 vs Oppo Mirror 3 vs Oppo A31
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| Manufacturer | Oppo | Oppo | Oppo |
| Announced | January 2015 | January 2015 | April 2015 |
| Status | Coming Soon - Q1 2015 | Available - February 2015 | Available - April 2015 |
| Price | Rs. 29,990 ($441.03) [Similarly Priced] | Rs. 11,300 ($166.18) [Similarly Priced] | Rs. 9,999 ($147.04) [Similarly Priced] |
| Colors | White, Black | Grey, White | White, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
156.8 x 81 x 8 mm (6.17 x 3.19 x 0.31 in) |
- |
131.9 x 65.5 x 8 mm (5.19 x 2.58 x 0.31 in) |
| Weight | 195 g (6.88 oz) | - | 135 g (4.76 oz) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | TD-SCDMA 1900 / 2000 | HSDPA 1900 / 2100 | TD-SCDMA 1880 / 2010 |
| 4G Network | TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 38, 39, 40, 41) | - | LTE band 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, Push Mail, EMail |
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| OS | Android OS, v4.4.4 (KitKat) | Android OS, v4.4 (KitKat) with ColorOS | Android OS, v4.4 (KitKat) |
| Processor | Octa-core 1.7 GHz Cortex-A53, Mediatek MT6752 | Quad-core 1.2 GHz Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core Cortex-A53, Qualcomm MSM8916 Snapdragon 410 |
| GPU | Mali-T760MP2 | Adreno 306 | Adreno 306 |
| RAM | 2 GB | 1 GB | 1 GB |
| Internal Memory | 16 GB | 8 GB | 8 GB |
| External Memory | microSD, up to 32 GB | microSD, up to 128 GB | microSD, up to 128 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 2 | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.9 inches | 4.7 inches | 4.5 inches |
| Resolution | 1080 x 1920 pixels (377 ppi) | 720 x 1280 pixels (312 ppi) | 480 x 854 pixels (218 ppi) |
| Screen-to-Body Ratio | 74.11% | - | 64.41% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | FM radio | - |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 8 MP, 3264 x 2448 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Sony IMX 179 Sensor | Auto focus, Geo-tagging |
| Video | 1080p@30fps | 720p@30fps | 1080p@30fps |
| Front Camera | 5 MP, 1080p, LED flash [Similar] | 5 MP, 720p@30fps [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE | HSDPA, HSUPA | TD-SCDMA, LTE Cat4 150/50 Mbps |
| Bluetooth | v4.0 | v4.0, A2DP, LE | v4.0 |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot | Yes |
| USB | microUSB v2.0 | microUSB v2.0, USB On-the-go | microUSB v2.0 |
| GPS | Yes, with A-GPS | Yes, with A-GPS | Yes, with A-GPS |
| Browser | HTML5 | HTML5 | HTML |
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| Internal | 16 GB, 2 GB RAM | 8 GB, 1 GB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | microSD, up to 32 GB | microSD, up to 128 GB | 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 | Li-Ion Battery |
| Capacity | 3100 mAh | 2000 mAh | 2000 mAh |
| Stand by | Up to 400 h (3G) | - | Up to 240 h |
| Talk Time | Up to 10 h (3G) | - | Up to 7 h |
