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Samsung Galaxy S8  3.5/10 | Oppo R9s Plus 2.9/10 |
| OS | Android 7.0 (Nougat) | Android 6.0.1 (Marshmallow) |
| RAM | 4 GB -44.8 | 6 GB -17.2 |
| Internal | 64 GB -65.4 | 64 GB -65.4 |
| CPU | Octa-core (4x2.3 GHz & 4x1.7 GHz) - EMEA Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) - US model | Octa-core (4x1.95 GHz Cortex-A72 & 4x1.44 GHz Cortex-A53) |
| GPU | Mali-G71 MP20 - EMEA Adreno 540 - US model | Adreno 510 |
| Chipset | Exynos 8895 Octa - EMEA Qualcomm MSM8998 Snapdragon 835 - US model | Qualcomm MSM8976 Pro Snapdragon 653 |
| Type | Super AMOLED capacitive touchscreen, 16M colors | Super AMOLED capacitive touchscreen, 16M colors |
| Size | 5.8 inches (14.21 cm) -15.6 | 6 inches (14.7 cm) -12.7 |
| Resolution | 1440x2960 +81.3 | 1080x1920 -11.8 |
| Pixel density | 570 Pixels per inch +60.4 | 367 Pixels per inch +3.3 |
| Screen/body ratio | 83.6% -1 | 75.1% -11.1 |
| Multi-touch | Yes | Yes |
| Protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 |
| Loudspeaker | Voice 68dB / Noise 69dB / Ring 70dB | |
| Quality | Noise -92.5dB / Crosstalk -92.8dB | |
| Alerts | MP3, WAV ringtones, Vibration | MP3, WAV ringtones, Vibration |
| Output | 3.5mm | 3.5mm |
32-bit/384kHz audio Active noise cancellation with dedicated mic | Active noise cancellation with dedicated mic | |
| Radio | No | No |
| Type | Photo / Video | |
| Primary | 12 MP, f/1.7, 26mm, phase detection autofocus, OIS, LED flash -74.7 | 16 MP, f/1.7, phase detection autofocus, OIS, dual-LED (dual tone) flash -66.2 |
| Video | [email protected], [email protected], HDR, dual-video rec. | [email protected], [email protected] |
| Secondary | 8 MP, f/1.7, autofocus, [email protected], dual video call, Auto HDR -47.1 | 16 MP, f/2.0, 1/3" sensor size, HDR +5.9 |
| Features | 1/2.5" sensor size, 1.4 µm pixel size, geo-tagging, simultaneous 4K video and 9MP image recording, touch focus, face/smile detection, Auto HDR, panorama | 1/2.8" sensor size, 1.12µm pixel size, geo-tagging, touch focus, face detection, HDR, panorama |
| Capacity | Non-removable Li-Ion 3000 mAh battery -42.4 | Non-removable Li-Po 4000 mAh battery -23.2 |
| Height | 14.89 cm (6.08 inch) -12.1 | 16.36 cm (6.68 inch) -3.5 |
| Width | 6.81 cm (2.78 inch) -18.4 | 8.08 cm (3.3 inch) -3.2 |
| Thickness | 0.8 cm (0.33 inch) -8.6 | 0.74 cm (0.3 inch) -15.4 |
| Volume | 81.12072cm3 (4.95 inch3) -35.5 | 97.819712cm35.97 inch3) -22.3 |
| Weight | 155 g (5.47 oz) -31 | 185 g (6.53 oz) -17.6 |
| Colors | Arctic Silver, Coral Blue, Maple Gold, Midnight Black, Orchid Gray | Black, Gold, Rose Gold |
| IP68 certified Samsung Pay (Visa, MasterCard certified) dust/water proof over 1.5 meter and 30 minutes |
| GPS | A-GPS, BDS, GALILEO, GLONASS | A-GPS |
| Expandable memory | microSD, up to 256 GB (dedicated slot) - single-SIM model microSD, up to 256 GB (uses SIM 2 slot) - dual-SIM model | microSD, up to 256 GB (uses SIM 2 slot) |
| USB | 3.1, Type-C 1.0 reversible connector | microUSB 2.0, USB On-The-Go |
| Sensors | Accelerometer, Barometer, Compass, Fingerprint (rear-mounted), Gyro, Heart Rate, Iris Scanner, Proximity, Spo2 | Accelerometer, Compass, Fingerprint (front-mounted), Gyro, Proximity |
| SIM | Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE |
| GPRS | Yes | Yes |
| Edge | Yes | Yes |
| Speed | HSPA 42.2/5.76 Mbps LTE-A (4CA) Cat16 1024/150 Mbps | HSPA 42.2/5.76 Mbps LTE Cat6 300/50 Mbps |
| Bluetooth | 5.0, A2DP, LE, aptX | 4.1, A2DP, LE |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot |
| NFC | Yes | Yes |
| Network | Samsung Galaxy S8 fsupported network frequencies | Oppo R9s Plus fsupported network frequencies |
| Messaging | Email, IM, MMS, Push Mail, SMS(threaded view) | Email, MMS, Push Email, SMS (threaded view) |
| Browser | HTML5 | HTML5 |
| Java | No | No |
| ANT+ support Document editor Fast battery charging (Quick Charge 2.0) MP3/WAV/eAAC+/FLAC player MP4/DivX/XviD/H.265 player Photo/video editor Qi/PMA wireless charging (market dependent) S-Voice natural language commands and dictation Samsung DeX (desktop experience support) | Document viewer Fast battery charging (VOOC) MP3/WAV/eAAC+/FLAC player MP4/H.264 player Photo/video editor |
| Vendor | Samsung | Oppo |
| Modal year | 2017 | 2016 |
| Announced | 2017 March | 2016 October |
| Released | 2017 April | 2016 December |
| Status | Available. Released 2017, April | Available. Released 2016, December |
| Rating |
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| Pros | 1440x2960 screen resolution. 570ppi pixel density. Corning Gorilla Glass 5. Compact dimensions (14.89x6.81x0.8cm). Thin, 0.8cm. Light weight, 155g. Fast battery charging. Quick charge. Dual SIM. Fingerprint sensor. Type-C USB. External memory expansion slot: microSD, up to 256 GB (dedicated slot) - single-SIM model microSD, up to 256 GB (uses SIM 2 slot) - dual-SIM model Water resistant. 5 colors. View details... | 367ppi pixel density. Corning Gorilla Glass 5. Dual camera. 16 MP front camera. Compact dimensions (16.36x8.08x0.74cm). Thin, 0.74cm. Light weight, 185g. Fast battery charging. Dual SIM. Fingerprint sensor. External memory expansion slot: microSD, up to 256 GB (uses SIM 2 slot) 3 colors. View details... |
| Cons | 4 GB RAM. 64 GB internal memory. 5.8 inch Super AMOLED capacitive touchscreen, 16M colors. 83.6% screen/body ratio. 12 MP primary camera. 8 MP front camera. 3000 mAh battery. No radio. Non-removable battery. View details... | 6 GB RAM. 64 GB internal memory. 6 inch AMOLED capacitive touchscreen, 16M colors. 1080x1920 screen resolution. 75.1% screen/body ratio. 16 MP primary camera. 4000 mAh battery. No radio. Not water resistant. Non-removable battery. View details... |
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