Phone Comparison - Oppo A31 vs ZTE nubia N1 vs Oppo A57
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| Price Comparison (India) | - | - | |
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| Manufacturer | Oppo | ZTE | Oppo |
| Announced | April 2015 | July 2016 | November 2016 |
| Status | Available - April 2015 | Available - July 2016 | Available - January 2017 |
| Price | Rs. 9,999 ($147.04) [Similarly Priced] | Rs. 11,999 ($264.56) [Similarly Priced] | Rs. 14,990 ($240.00) [Similarly Priced] |
| Colors | White, Blue | Silver, Gold | Gold, Rose Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
131.9 x 65.5 x 8 mm (5.19 x 2.58 x 0.31 in) |
150.9 x 75 x 8.9 mm (5.94 x 2.95 x 0.35 in) |
149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in) |
| Weight | 135 g (4.76 oz) | 170 g (6 oz) | 147 g (5.19 oz) |
| SIM Type | - | Dual-SIM | Dual-SIM |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO / TD-SCDMA |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO - A59m |
| 3G Network | TD-SCDMA 1880 / 2010 | HSDPA 900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail |
| Build Features | - | - Fingerprint Sensor | - Fingerprint Sensor - Metal Build - 2.5D Curved Glass |
| Notification LED | - | - | Yes |
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| OS | Android OS, v4.4 (KitKat) | Android OS, v6.0 (Marshmallow) | Android OS, v6.0 (Marshmallow) |
| Processor | Quad-core Cortex-A53, Qualcomm MSM8916 Snapdragon 410 | Quad-core 2.0 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Mediatek MT6755 Helio P10 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 |
| GPU | Adreno 306 | Mali-T860MP2 | Adreno 505 |
| RAM | 1 GB | 3 GB | 3 GB |
| Internal Memory | 8 GB | 64 GB | 32 GB |
| External Memory | microSD, up to 128 GB | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 128 GB (uses SIM 2 slot) |
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| Type | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 4.5 inches | 5.5 inches | 5.2 inches |
| Resolution | 480 x 854 pixels (218 ppi) | 1080 x 1920 pixels (401 ppi) | 720 x 1280 pixels (282 ppi) |
| Screen-to-Body Ratio | 64.41% | 73.51% | 68.79% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| 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 | 13 MP |
| Flash | LED flash | LED Flash | LED Flash |
| Features | Auto focus, Geo-tagging | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 13 MP, 1080p [Similar] | 16 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | TD-SCDMA, LTE Cat4 150/50 Mbps | HSPA 42/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE, VoLTE |
| Bluetooth | v4.0 | v4.0, A2DP, LE | v4.1, A2DP |
| Wi-Fi | Yes | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | Wi-Fi 802.11 a/b/g/n, hotspot |
| USB | microUSB v2.0 | Type-C 1.0 reversible connector, USB On-The-Go | microUSB v2.0, USB Host |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, Beidou | Yes, with A-GPS |
| Browser | HTML | HTML5 | HTML5 |
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| Internal | 8 GB, 1 GB RAM | 64 GB, 3 GB RAM | 32 GB, 3 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 128 GB (uses SIM 2 slot) |
| 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-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 2000 mAh | 5000 mAh | 2900 mAh |
| Stand by | Up to 240 h | Up to 480 h | - |
| Talk Time | Up to 7 h | Up to 25 h | - |
Rs. 11,999 
