| Brand: | Vivo |
| Model: | Y31 (2015) |
| Type: | Smartphone |
| Release Date: | 2015 |
| Size: | 4.7 inches, 60.9 cm2 |
| Resolution: | 720 x 1280 pixels, 16:9 ratio (~312 ppi density) |
| Technology: | IPS LCD |
| Main Specs: | 8 MP |
| Main Features: | LED flash, HDR |
| Main Video: | 720p@30fps |
| Selfie Specs: | 2 MP |
| Selfie Video: | 720p@30fps |
| Capacity: | 2100 mAh |
| Chipset: | Mediatek MT6580 (28 nm) |
| Cpu: | Quad-core 1.3 GHz Cortex-A7 |
| Gpu: | Mali-400MP2 |
| Ram: | 1GB |
| Storage: | 8GB |
| Expandable: | microSDXC (dedicated slot) |
| Os: | Android 5.1 (Lollipop), Funtouch 2.1 |
| Dimensions: | 137.2 x 68.8 x 8.4 mm (5.40 x 2.71 x 0.33 in) |
| Weight: | 137 g (4.83 oz) |
| Sim: | Dual SIM |
| Wifi: | Wi-Fi 802.11 b/g/n, hotspot |
| Bluetooth: | 4.0, A2DP |
| Nfc: | No |
| Usb: | microUSB 2.0 |
| Headphone Jack: | Yes |
| Network: | GSM / HSPA |
| Sensors: | Accelerometer, proximity, compass |
| Colors: | White, Black |
| Usd: | ~140 USD |
