Oppo K3 features a 6.5-inch AMOLED Display that will offer full HD+ resolution of 2340 x 1080 pixels pixels. The notch-less screen phone has an 6th-generation in-display fingerprint. Under the hood, the phone is powered by 2.2GHz octa-core Qualcomm Snapdragon 710 processor with Adreno 616 GPU. It comes with up to 6GB/8GB RAM and 64GB/128GB internal storage. There is a dedicated microSD card slot on the device for expanding its storage.
For the imaging department, the phone is equipped with a 16-megapixel primary camera shooter at the rear with an Aperture of f/1.7, and a 2-megapixel secondary sensor. The phone has a 16-megapixel pop-up front facing camera. There is a 3,765mAh battery with VOOC 3.0 fast charging support. It runs on Android Pie operating system coupled with the latest ColorOS 6.0 UI.
| Type | Full HD+, 19.5:9 aspect ratio AMOLED display | 
| Resolution | 2340 x 1080 pixels | 
| Screen Size | 6.5 inches | 
| Processor | Octa Core 2.2 GHz, Qualcomm Snapdragon 710, with Adreno 616 GPU | 
| Operating System | Android 9.0, Pie, ColorOS 6.0 | 
| RAM | 8 GB | 
| Internal Memory | 128 GB | 
| Expandable | 256 GB, micro SD card | 
| Rear Camera | 16MP + 2MP | 
| Front Camera | 16 MP, with f/2.0 aperture | 
| Image Stablizer | No | 
| Flash | Yes | 
| Video Recording | Yes, 1080p@30fps | 
| Design | Bar | 
| Size | 161.2 x 76.0 x 9.4 mm | 
| Weight | 191 grams | 
| Capacity | 3765 mAh, VOOC 3.0 fast charging | 
| Type | Non Removable | 
| Radio | Yes | 
| Media Player | Yes, MP4/H.264/FLAC player | 
| Video Player | Yes, MP3/eAAC+/WAV player | 
| Network | 2G | 
| GSM/CDMA | GSM | 
| Bluetooth | 5.0, A2DP, LE | 
| WiFi | Yes, Wi-Fi 802.11 a/b/g/n, WiFi Direct, hotspot | 
| Internet | EDGE | 
| GPS | With GLONASS | 
| USB | Type-C | 
| HDMI | No | 
| Headphone Connector | 3.5 mm, Active noise cancellation with dedicated mic | 
| SIM | Dual | 
| NFC | No | 
| DLNA | No | 
| Sensors | |
| Built in Applications | Yes | 
| Warrenty | 1 Year | 
| Dustproof | No | 
| Shockproof | No | 
| Water Resistant | No | 
| Keypad | Touchscreen, Capacitive with multitouch | 
| Water Proof | No |