| Brand | Walton |
| Model | OLVIO S31 |
| Device Type | FeaturePhone |
| Release Date | 01 June 2015 |
| Status | Available |
| Operating System | FeaturePhone |
| Display Type | TFT |
| Screen Size | 2.8 inches (7.11 cm) |
| Resolution | 240x320 px |
| Pixel Density | 144 ppi |
| Camera Setup | Single |
| Resolution | 0.3 MP, Primary Camera |
| Build | Back: Plastic |
| Colors | Black, Gold |
| Battery type | Li-Ion (Lithium Ion) |
| Capacity | 1500 mAh |
| Placement | Removable |
| Expandable Memory | Up to 32 GB |
| Network | 2G |
| SIM Slot | Dual SIM |
| SIM Size | SIM1: Mini, SIM2: Mini |
| GPRS | Available |
| Bluetooth | v2.0 |
| USB | microUSB 2.0 |
| FM Radio | Yes |
| Alert Types | Vibration, MP3, Ringtones |
| Video | MP4 |
| Made By | Bangladesh |
| Features | Blacklist, Torchlight |
