| Hardware and OS | Vivo Y31 2021 | |
| Operating system | Android v11 | |
| Custom UI | Funtouch OS | |
| Processor | Octa core (2 GHz, Quad core, Kryo 260 1.8 GHz, Quad core, Kryo 260) | |
| Chipset | Qualcomm Snapdragon 662 | |
| Internal Storage | 128 GB | |
| Expandable memory | Yes, Upto 1TB | |
| GPU | Adreno 610 | |
| RAM | 6 GB | |
| Camera | Vivo Y31 2021 | other phones |
| Main camera | 48 MP 2 MP 2 MP | |
| Aperture | F2.0 | |
| Autofocus | Yes | |
| Camera features | Digital Zoom, Auto Flash, Face detection, Touch to focus | |
| Image | 8000 x 6000 Pixels | |
| Flash | Yes, LED Flash | |
| Front camera | 16 MP | |
| Front camera resolution | 16 MP f/2.0, Wide Angle Primary Camera | |
| Video recording | 1920x1080 @ 30 fps | |
| Connectivity | Vivo Y31 2021 | other phones |
| Bluetooth | Yes, v5.0 | |
| SIM size | SIM1: Nano, SIM2: Nano | |
| Dual SIM | Dual SIM, GSM GSM | |
| GPS | Yes, with A-GPS, Glonass | |
| Network support | 4G , 3G, 2G | |
| USB connectivity | Mass storage device, USB charging | |
| USB TYPE-C | Yes | |
| WI-FI | Yes, Wi-Fi 802.11, b/g/n/n 5GHz | |
| Multimedia | Vivo Y31 2021 | other phones |
| Audio jack | 3.5 MM | |
| FM radio | Yes | |
| Loudspeaker | Yes | |
| Battery | Vivo Y31 2021 | other phones |
| Capacity | 5000 mAh | |
| Type | Li-Polymer | |
| User replaceable | No | |
| Quick charging | Yes, Fast, 18W: 70 % in 64 minutes | |
| Design | Vivo Y31 2021 | other phones |
| Colors | Ocean Blue, Racing Black | |
| Height | 163.8 mm | |
| Width | 75.3 mm | |
| Thickness | 8.3 mm | |
| Weight | 188 grams | |
| Features | Vivo Y31 2021 | other phones |
| Fingerprint sensor position | Side | |
| Fingerprint sensor | Yes | |
| Other sensors | Light sensor, Proximity sensor, Accelerometer, Compass | |
