Phone Comparison - Oppo A57 vs Nokia 6 vs Samsung Galaxy J7+
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| Manufacturer | Oppo | Nokia | Samsung |
| Announced | November 2016 | January 2017 | September 2017 |
| Status | Available - January 2017 | Available - May 2017 | Available - September 2017 |
| Price | Rs. 14,990 ($240.00) [Similarly Priced] | Rs. 14,999 ($245.00) [Similarly Priced] | Rs. 21,999 ($345.00) [Similarly Priced] |
| Colors | Gold, Rose Gold | Black, Silver | Black, Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in) |
154 x 75.8 x 8.4 mm (6.06 x 2.98 x 0.33 in) |
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| Weight | 147 g (5.19 oz) | 169 g (5.96 oz) | - |
| SIM Type | Dual-SIM | Dual-SIM | Dual-SIM |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO - A59m |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | LTE band 3(1800), 7(2600), 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 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800) |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | - Fingerprint Sensor - Metal Build - 2.5D Curved Glass | - Fingerprint Sensor - Metal Build - Dual Speakers - Dolby Technology Dolby Atmos |
- 2.5D Curved Glass - Fingerprint Sensor - Metal Body - Bixby |
| Notification LED | Yes | Yes | Yes |
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| OS | Android OS, v6.0 (Marshmallow) | Android OS, v7.1 (Nougat) | Android OS, v7.1.1 (Nougat) |
| User Interface | ColorOS 3.0 | - | - |
| Processor | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8937 Snapdragon 430 | 2.39 GHz Octa-core |
| GPU | Adreno 505 | Adreno 505 | - |
| RAM | 3 GB | 4 GB | 4 GB |
| Internal Memory | 32 GB | 64 GB | 32 GB |
| External Memory | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB | microSD, up to 256 GB |
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| Type | IPS LCD capacitive touchscreen | IPS LCD capacitive touchscreen, Gorilla Glass 3, 2.5D Curved Glass | Super AMOLED capacitive touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.2 inches | 5.5 inches | 5.5 inches |
| Resolution | 720 x 1280 pixels (282 ppi) | 1080 x 1920 pixels (401 ppi) | 1080 x 1920 pixels (401 ppi) |
| Screen-to-Body Ratio | 68.79% | 71.27% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Stereo FM Radio with Recording | FM radio, recording |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | 16 MP | Dual 13 MP + 5 MP |
| Flash | LED Flash | Dual-LED (Dual Tone) | LED flash |
| Features | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Phase Detection Autofocus, f/2.0 Aperture, 1.0um Sensor, Geo-tagging, Touch Focus, Face/smile Detection, HDR, Panorama, Time Lapse, Slow Motion | Auto focus, Live Focus, f/1.7 aperture main, f/1.9 aperture secondary, Geo-tagging, Touch Focus, Face Detection, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 16 MP [Similar] | 8 MP, 1080p, 1.12um Sensor, f/2.0 Aperture, Large Wide-angle 84˚ [Similar] | 16 MP, f/1.9 [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE, VoLTE | HSPA, LTE, VoLTE | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, VoLTE |
| Bluetooth | v4.1, A2DP | v4.1, A2DP, LE | v4.2, A2DP, EDR, LE, ANT+ |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot |
| USB | microUSB v2.0, USB Host | microUSB v2.0, USB Host, Fast Charging | Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 3 GB RAM | 64 GB, 4 GB RAM | 32 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 128 GB | microSD, up to 256 GB |
| USB OTG | Supported | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Light Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Ion Battery |
| Capacity | 2900 mAh | 3000 mAh | 3000 mAh |
| Stand by | - | Up to 768 h (3G) | - |
| Talk Time | - | Up to 18 h (3G) | - |
