Phone Comparison - Oppo A57 vs Oppo A77 vs Samsung Galaxy S9
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| Manufacturer | Oppo | Oppo | Samsung |
| Announced | November 2016 | July 2017 | February 2018 |
| Status | Available - January 2017 | Available - July 2017 | Coming Soon, March 2018 |
| Price | Rs. 14,990 ($240.00) [Similarly Priced] | - | Rs. 52,999 ($750.00) [Similarly Priced] |
| Colors | Gold, Rose Gold | Gold, Rose Gold | Various |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
149.1 x 72.9 x 7.65 mm (5.87 x 2.87 x 0.3 in) |
153.3 x 75.9 x 7.4 mm (6.04 x 2.99 x 0.29 in) |
147.7 x 68.7 x 8.5 mm (5.81 x 2.7 x 0.33 in) |
| Weight | 147 g (5.19 oz) | 148 g (5.22 oz) | 163 g (5.75 oz) |
| SIM Type | Dual-SIM | Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 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 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE band 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) | LTE | LTE |
| Messaging | SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail | SMS, MMS, EMail, IM |
| Build Features | - Fingerprint Sensor - Metal Build - 2.5D Curved Glass | - Fingerprint Sensor |
- Fingerprint Sensor - Samsung Pay (Visa, MasterCard certified) - IP68 certified - dust/water proof over 1.5 meter and 30 minutes |
| Notification LED | Yes | Yes | Yes |
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| OS | Android OS, v6.0 (Marshmallow) | Android OS, v7.0 (Nougat) | Android 8.0 (Oreo) |
| User Interface | ColorOS 3.0 | - | Samsung Experience |
| Processor | Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435 | Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625 | Octa-core (4x2.8 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA & China, Exynos 9810 Octa - EMEA Qualcomm Snapdragon 845 |
| GPU | Adreno 505 | Adreno 506 | Mali-G72 MP18 - EMEA Adreno 630 - USA & China |
| RAM | 3 GB | 4 GB | 4 GB |
| Internal Memory | 32 GB | 64 GB | 64 GB |
| External Memory | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only |
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| Type | IPS LCD capacitive touchscreen | IPS LCD Capacitive Touchscreen | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 5.2 inches | 5.5 inches | 5.8 inches |
| Resolution | 720 x 1280 pixels (282 ppi) | 1080 x 1920 pixels (401 ppi) | 1440 x 2960 pixels (568 ppi) |
| Screen-to-Body Ratio | 68.79% | 71.50% | 84.00% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM Radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | 13 MP | 12 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Phase Detection Autofocus, f/2.2, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | Phase Detection Autofocus, f/1.5 - f/2.4 variable aperture lens, 26mm, 1/2.5", 1.4 µm, Dual Pixel PDAF, OIS, Geo-tagging, Simultaneous 4K Video And 9MP Image Recording, Touch Focus, Face/smile Detection, Auto HDR, Panorama |
| Video | 1080p@30fps | 1080p@30fps | 2160p@30fps, 1080p@60fps, HDR, dual-video rec. |
| Front Camera | 16 MP [Similar] | 16 MP, f/2.0 [Similar] | 8 MP, f/1.6, autofocus, 1440p, dual video call, Auto HDR [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-A (4CA) Cat16 1024/150 Mbps |
| Bluetooth | v4.1, A2DP | 4.2, A2DP | 5.0, A2DP, LE, aptX |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, hotspot | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0, USB Host | microUSB 2.0 | 3.1, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO |
| Browser | HTML5 | HTML5 | HTML5 |
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| Internal | 32 GB, 3 GB RAM | 64 GB, 4 GB RAM | 64 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 128 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) | microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only |
| USB OTG | Supported | Not Supported | Not 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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| Barometer Sensor | |
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| Heart-rate Sensor | |
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| NFC | |
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| Type | Non-removable Li-Ion Battery | Non-removable Li-Ion Battery | Non-removable Li-Ion battery |
| Capacity | 2900 mAh | 3200 mAh | 3000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
