| Hardware and OS | Nokia 9 (2018) | Oppo A3s |
| Operating system | Android 8.0 (Oreo) | 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 SDM450 Snapdragon 450 (14 nm) |
| GPU | Adreno 540 | Adreno 506 |
| RAM | 4GB | |
| Internal memory | | 16 GB, 2 GB RAM |
| Internal Storage | 64/128GB | |
| External memory | | microSD, up to 256 GB (dedicated slot) |
| Memory Card Slot | microSD | |
| Display | Nokia 9 (2018) | Oppo A3s |
| Type | AMOLED capacitive touchscreen | IPS LCD |
| Size | 5.5 inches, 83.4 cm2 | 6.2" inc |
| Resolution | 1440 x 2560 pixels, 16:9 ratio | 720 x 1520 px |
| Touchscreen | Yes Multi Touch Support | capacitive touchscreen |
| Screen-to-Body Ratio | | 81.2% |
| Display area | | 95.9 cm2 |
| Display aspect ratio | | 19:9 (height:width) |
| Protection | Yes, Corning Gorilla Glass 5 | |
| Pixel Density | ~534 ppi density | 271 PPI |
| Features | AMOLED capacitive touchscreen, 16M colors, 5.5 inches, 83.4 cm2, 1440 x 2560 pixels, 16:9 ratio (~534 ppi density), Multitouch, Corning Gorilla Glass 5, Always-on display | |
| Colors | 16M Colors | 16M |
| Connectivity | Nokia 9 (2018) | Oppo A3s |
| 2G Network | | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | LTE |
| NFC | yes | |
| 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 |
| SIM card | | Dual SIM (Nano-SIM, dual stand-by) |
| SIM | Standard SIM | |
| Bluetooth | | 4.2, A2DP, LE |
| Dual SIM | Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Edge | | Yes |
| GPRS | | Yes |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS |
| Speed | HSPA, LTE | 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 |
| Camera | Nokia 9 (2018) | Oppo A3s |
| Image | 1440 x 2560 pixels | |
| Main camera | Dual: 13 MP (f/2.0, 1.12 ??m), phase detection & laser autofocus, Carl Zeiss optics, OIS, dual-LED dual-tone flash | 13 MP, Dual |
| Specs | | 13 MP, f/2.2, AF
-2 MP, f/2.4, depth sensor |
| Features | dual-LED dual-tone flash | LED flash, HDR, panorama |
| Video | | 1080p@30fps |
| Selfie camera | Dual: 5 MP (f/2.0, AF, 1080p), 5 MP (f/2.4, no AF) | 8 MP, Single |
| Multimedia | Nokia 9 (2018) | Oppo A3s |
| Loudspeaker | Yes | |
| Ring Tones | MP3, WAV ringtones | |
| 3.5 mm Jack | yes | Yes |
| Radio | | FM radio |
| Design | Nokia 9 (2018) | Oppo A3s |
| Waterproof | IP68 certified - dust/water proof over 1.5 meter and 30 minutes | |
| Colors | | Red, Dark Purple |
| Dimensions | | 156.2 x 75.6 x 8.2 mm |
| Weight | | 168 g |
| Battery | Nokia 9 (2018) | Oppo A3s |
| Capacity | 3250 mAh | |
| Placement | Non-Removable | |
| Battery capacity | | 4230 mAh, Non-removable Li-Ion |
| Other | Nokia 9 (2018) | Oppo A3s |
| Release date | | 2018, July |
| Sensors | Fingerprint, accelerometer, gyro, proximity, compass | Accelerometer, proximity, compass |
