| Hardware and OS | Oppo K3 | |
| Operating system | Android 9.0 (Pie) | |
| Processor | Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver) | |
| Chipset | Qualcomm SDM710 Snapdragon 710 (10 nm) | |
| GPU | Adreno 616 | |
| Internal memory | 128 GB, 8 GB RAM64 GB, 6 GB RAM | |
| External memory | No | |
| Display | Oppo K3 | other phones |
| Type | AMOLED | |
| Size | 6.5" inc | |
| Resolution | 1080 x 2340 px | |
| Protection | Corning Gorilla Glass (unspecified version) | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 84.7% | |
| Display area | 103.7 cm2 | |
| Display aspect ratio | 19.5:9 (height:width) | |
| Pixel Density | 396 PPI | |
| Colors | 16M | |
| Connectivity | Oppo K3 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G Network | LTE (unspecified) | |
| Wi-Fi | Wi-Fi 802.11 а/b/g/n/ac, dual-band, WiFi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.0, A2DP, LE | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| Speed | HSPA, LTE-A | |
| USB | 2.0, Type-C 1.0 reversible connector | |
| Camera | Oppo K3 | other phones |
| Main camera | 16 MP, Dual | |
| Specs | 16 MP, f/1.7, 1/2.8', 1.12µm, PDAF
-2 MP, f/2.4, depth sensor | |
| Features | LED flash, HDR, panorama | |
| Video | 2160p@30fps, 1080p@30fps | |
| Selfie camera | 16 MP, Single | |
| Multimedia | Oppo K3 | other phones |
| 3.5 mm Jack | Yes | |
| Design | Oppo K3 | other phones |
| Colors | Black, Nebula Purple, Morning White | |
| Dimensions | 161.2 x 76 x 9.4 mm | |
| Weight | 191 g | |
| Battery | Oppo K3 | other phones |
| Battery capacity | 3765 mAh, Non-removable Li-Po | |
| Other | Oppo K3 | other phones |
| Release date | 2019, May | |
| Sensors | Fingerprint (under display), accelerometer, gyro, proximity, compass | |
