| Hardware and OS | Oppo K9s | |
| Operating system | Android 11, ColorOS 11.3 | |
| Processor | Octa-core (4x2.4 GHz Kryo 670, 4x1.9 GHz Kryo 670) | |
| GPU | Adreno 642L | |
| RAM | 6 GB, 8 GB | |
| Internal Storage | 128 GB, 256 GB | |
| Memory Card Slot | No | |
| User Interface | Yes | |
| Display | Oppo K9s | other phones |
| Type | IPS LCD | |
| Size | 6.59 inches | |
| Resolution | 1080 x 2412 pixels | |
| Colors | 16M Colors | |
| Pixel Density | ~ 401 ppi | |
| Touchscreen | Yes | |
| Features | 120Hz | |
| Connectivity | Oppo K9s | other phones |
| 4G Network | 1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41 | |
| 5G Network | 1, 28, 41, 77, 78 SA/NSA | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS, QZSS | |
| NFC | Unspecified | |
| USB | USB Type-C 2.0, USB On-The-Go | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | |
| SIM | Nano SIM | |
| Dual SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Wireless Charging | No | |
| Camera | Oppo K9s | other phones |
| Main camera | 64 MP (wide), 8 MP (macro), 2 MP (depth) | |
| Features | LED flash, HDR, panorama | |
| Image | 2160p | |
| Selfie camera | 16 MP (wide) | |
| Multimedia | Oppo K9s | other phones |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Radio | No | |
| Video Playback | Yes | |
| Video Out | Yes | |
| Ring Tones | Yes | |
| 3.5 mm Jack | Yes | |
| Design | Oppo K9s | other phones |
| Dimensions | 8.5 mm thickness | |
| Waterproof | No | |
| Weight | 199 Grams | |
| Battery | Oppo K9s | other phones |
| Capacity | Li-Po 4500 mAh, Fast charging 30W | |
| Placement | Non-Removable | |
| Other | Oppo K9s | other phones |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, | |
