LG K31 features a 5.7-inch HD+ Notch FullVision display with a screen Resolution of 720 x 1520 pixels and 18.9:9 aspect ratio. It comes with a rear-mounted fingerprint scanner.
The smartphone is powered by an octa-core MediaTek MT6762 Processor along with 2GB RAM and 32GB internal memory. The storage can be further expanded up to 32GB via microSD card slot. There is a dedicated Google Assistant button on the left side
On the camera front, the smartphone features a dual-camera setup with a 13-megapixel sensor with f/1.8 Aperture and 5-megapixel Ultra-wide sensor with f/2.2 aperture. For the front, there is a 5-megapixel shooter with f/2.2 aperture for selfies and video calling.
| Type | HD+, 18.9:9 aspect ratio | 
| Resolution | 720 x 1520 pixels | 
| Screen Size | 5.7 inches | 
| Processor | Octa Core 2.3 GHz, MediaTek Helio P22 MT6762 | 
| Operating System | Android 10 | 
| RAM | 2 GB | 
| Internal Memory | 32 GB | 
| Expandable | 32 GB, via Micro SD card | 
| Rear Camera | 13MP + 5MP, Dual Cameras- 13-megapixel primary lens and a 5-megapixel super wide-angle lens. | 
| Front Camera | 5 MP | 
| Image Stablizer | No | 
| Flash | Yes, LED | 
| Video Recording | Yes | 
| Design | Bar | 
| Weight | 146 grams | 
| Capacity | 3000 mAh | 
| Radio | Yes | 
| Media Player | Yes, MP3/ WMA/AAC/AAC+/WAV/AC3/AAC-LC, AMR-NB, WMA, WAV | 
| Video Player | Yes, DivX, WMV, MP4, H.264/H.263 | 
| Network | 2G | 
| GSM/CDMA | GSM | 
| Bluetooth | 5.0 | 
| WiFi | Yes, 802.11 b, g, n | 
| Internet | EDGE | 
| GPS | With A-GPS | 
| USB | Micro | 
| HDMI | No | 
| Headphone Connector | 3.5 mm | 
| SIM | Dual | 
| NFC | No | 
| Sensors | |
| Warrenty | 1 Year | 
| Dustproof | No | 
| Shockproof | Yes | 
| Water Resistant | No | 
| Keypad | Touchscreen | 
| Water Proof | No |