| Brand | Vivo |
| Model | Y31 (6GB RAM) |
| Device Type | Smartphone |
| Release Date | 13 September 2025 |
| Status | Available |
| Operating System | Android |
| OS Version | v15 |
| User Interface | Funtouch OS 15 |
| Chipset | Qualcomm Snapdragon 4 Gen 2 |
| CPU | Octa-core (2x 2.2 GHz – Cortex-A76) |
| CPU Cores | 8 Cores |
| Architecture | 64 bit |
| Fabrication | 4 nm |
| GPU | Adreno 613 |
| Display Type | IPS LCD |
| Screen Size | 6.68 inches (16.97 cm) |
| Resolution | 720x1608 px (HD+) |
| Pixel Density | 264 ppi |
| Screen to Body Ratio | 84.0% |
| Screen Protection | Gorilla Glass |
| Bezel-less Display | Yes with punch-hole display |
| Touch Screen | Capacitive Touchscreen, Multi-touch |
| Brightness | 1000 nits |
| Refresh Rate | 120 Hz |
| Notch | Punch-hole |
| Camera Setup | Dual |
| Resolution | 50 MP, f/1.8, Wide Angle, Primary Camera, 0.08 MP, f/3.0, Camera |
| Autofocus | Yes |
| Flash | LED Flash |
| Image Resolution | 8150 x 6150 Pixels |
| Settings | Exposure compensation, ISO control |
| Zoom | Digital Zoom |
| Shooting Modes | Continuous Shooting, High Dynamic Range mode (HDR) |
| Aperture | f/1.8 |
| Camera Features | Auto Flash, Face detection, Touch to focus |
| Video Recording | 1920x1080, 1280x720 |
| Video FPS | 30 fps |
| Camera Setup | Single |
| Resolution | 8 MP, f/2.0, Wide Angle, Primary Camera |
| Video Recording | 1920x1080, 1280x720 |
| Video FPS | 30 fps |
| Aperture | f/2.0 |
| Height | 166.1 mm |
| Width | 77 mm |
| Thickness | 8.39 mm |
| Weight | 209 grams |
| Colors | Diamond Green, Rose Red |
| Waterproof | Water resistant (up to 1.5m for 30 min) |
| IP Rating | IP68/IP69 |
| Ruggedness | Dust proof |
| Battery type | Li-Ion (Lithium Ion) |
| Capacity | 6500 mAh |
| Quick Charging | 44W wired |
| Placement | Non-removable |
| USB Type-C | USB Type-C 2.0 |
| Internal Storage | 128 GB |
| Storage Type | eMMC 5.1 |
| USB OTG | Yes |
| RAM | 6 GB |
| RAM Type | LPDDR4X |
| Network | 2G, 3G, 4G, 5G |
| SIM Slot | Dual SIM, GSM+GSM |
| SIM Size | SIM1: Nano, SIM2: Nano |
| EDGE | Available |
| GPRS | Available |
| VoLTE | Yes |
| Speed | HSPA, LTE, 5G |
| WLAN | Wi-Fi 5 (802.11 a/b/g/n/ac) 5GHz |
| Bluetooth | v4.2 |
| GPS | Yes with A-GPS, Glonass |
| Wi-fi Hotspot | Yes |
| USB | Mass storage device, USB charging |
| Light Sensor | Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope |
| Fingerprint Sensor | Yes |
| Finger Sensor Position | Side-mounted |
| Face Unlock | Yes |
| Loudspeaker | Yes |
| Audio Jack | USB Type-C |
| Video | 1080p@30fps |
| Made By | China |
| Features | Accelerometer, proximity, compass |
