| Hardware and OS | Nokia 8 | Oppo A3s |
| Operating system | Android 7.1.1 (Nougat), upgradable to Android 9.0 (Pie) | Android 8.1 (Oreo); ColorOS 5.1 |
| Processor | Octa-core (4x2.5 GHz Kryo & 4x1.8 GHz Kryo) | Octa-core 1.8 GHz Cortex-A53 |
| Chipset | Qualcomm MSM8998 Snapdragon 835 (10 nm) | Qualcomm SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 540 | Adreno 506 |
| Internal memory | 128 GB, 6 GB RAM64 GB, 4 GB RAM | 16 GB, 2 GB RAM |
| External memory | microSD, up to 512 GB (uses SIM 2 slot) | microSD, up to 256 GB (dedicated slot) |
| Display | Nokia 8 | Oppo A3s |
| Type | IPS LCD | IPS LCD |
| Size | 5.3" inc | 6.2" inc |
| Resolution | 1440 x 2560 px | 720 x 1520 px |
| Touchscreen | capacitive touchscreen | capacitive touchscreen |
| Protection | Corning Gorilla Glass 5 | |
| Screen-to-Body Ratio | 69.4% | 81.2% |
| Display area | 77.4 cm2 | 95.9 cm2 |
| Display aspect ratio | 16:9 (height:width) | 19:9 (height:width) |
| Pixel Density | 554 PPI | 271 PPI |
| Colors | 16M | 16M |
| Other | Always-on display | |
| Connectivity | Nokia 8 | Oppo A3s |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 b/g/n, WiFi Direct, hotspot |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM card | Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| Bluetooth | 5.0, A2DP, LE | 4.2, A2DP, LE |
| Edge | Yes | Yes |
| GPRS | Yes | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat9 450/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps |
| USB | 3.1, Type-C 1.0 reversible connector | microUSB 2.0, USB On-The-Go |
| NFC | Yes | |
| Camera | Nokia 8 | Oppo A3s |
| Main camera | 13 MP, Single | 13 MP, Dual |
| Specs | 13 MP, f/2.0, 1.12µm, PDAF & laser AF, OIS
-13 MP B/W, f/2.0, 1.12µm, PDAF & laser AF | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | Zeiss optics, dual-LED dual-tone flash, HDR, panorama | LED flash, HDR, panorama |
| Video | 2160p@30fps, 1080p@30fps | 1080p@30fps |
| Selfie camera | 13 MP, Single | 8 MP, Single |
| Multimedia | Nokia 8 | Oppo A3s |
| 3.5 mm Jack | Yes | Yes |
| Radio | No | FM radio |
| Design | Nokia 8 | Oppo A3s |
| Colors | Tempered Blue, Polished Blue, Steel, Polished Copper | Red, Dark Purple |
| Dimensions | 151.5 x 73.7 x 7.9 mm | 156.2 x 75.6 x 8.2 mm |
| Weight | 160 g | 168 g |
| Body build | Front glass, aluminum body (6000 series) | |
| Battery | Nokia 8 | Oppo A3s |
| Battery capacity | 3090 mAh, Non-removable Li-Ion | 4230 mAh, Non-removable Li-Ion |
| Other | Nokia 8 | Oppo A3s |
| Release date | 2017, September | 2018, July |
| Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer | Accelerometer, proximity, compass |
| SAR | SAR EU - 0.22 W/kg (head), 1.33 W/kg (body) | |
