| Hardware and OS | vivo Y31s 5G | |
| Operating system | Android 11, Funtouch 10.5 | |
| Processor | Octa-core (2x2.0 GHz Kryo 460 & 6x1.8 GHz Kryo 460) | |
| Chipset | Qualcomm SM4350 Snapdragon 480 5G (8 nm) | |
| Internal memory | 128GB 4GB RAM, 128GB 6GB RAM | |
| External memory | No | |
| GPU | Adreno 619 | |
| Display | vivo Y31s 5G | other phones |
| Size | 6.58 inches, 104.8 cm2 | |
| Resolution | 1080 x 2408 pixels, 20:9 ratio | |
| Type | IPS LCD, 90Hz | |
| Main Camera | vivo Y31s 5G | other phones |
| Camera | 13 MP, f/2.2, (wide), PDAF
2 MP, f/2.4, (depth) | |
| Features | LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30fps | |
| Selfie camera | vivo Y31s 5G | other phones |
| Camera | 8 MP, f/2.0, (wide) | |
| Features | HDR | |
| Video | 1080p@30fps | |
| Connectivity | vivo Y31s 5G | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 2100 | |
| 4G Network | 1, 3, 4, 5, 8, 28, 34, 38, 39, 40, 41 | |
| 5G Network | 1, 3, 28, 41, 77, 78 SA/NSA | |
| Bluetooth | 5.1, A2DP, LE, aptX HD | |
| CDMA | CDMA 800 | |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | |
| NFC | No | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A, 5G | |
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | |
| USB | USB Type-C 2.0, USB On-The-Go | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot | |
| Multimedia | vivo Y31s 5G | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Radio | No | |
| Battery | vivo Y31s 5G | other phones |
| Type | Li-Po 5000 mAh, non-removable | |
| Charging | Fast charging 18W | |
| Design | vivo Y31s 5G | other phones |
| Colors | Red, Gray, Aurora | |
| Dimensions | 164.2 x 75.4 x 8.4 mm (6.46 x 2.97 x 0.33 in) | |
| Weight | 185.5 g (6.56 oz) | |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Features | vivo Y31s 5G | other phones |
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | |
