| Hardware and OS (2020, December) | Vivo Y51 | |
| Operating system | Android 11, Funtouch 11 | |
| Processor | Octa-core (4x2.0 GHz Kryo 260 Gold, 4x1.8 GHz Kryo 260 Silver) | |
| GPU | Adreno 610 | |
| RAM | 8 GB | |
| Internal Storage | 128 GB | |
| Memory Card Slot | microSDXC (dedicated slot) | |
| User Interface | Yes | |
| Display (2020, December) | Vivo Y51 | other phones |
| Type | IPS LCD | |
| Size | 6.58 inches | |
| Resolution | 1080 x 2408 pixels | |
| Colors | 16M | |
| Pixel Density | 415 ppi | |
| Touchscreen | Yes | |
| Connectivity (2020, December) | Vivo Y51 | other phones |
| 4G Network | 1, 3, 5, 8, 40 | |
| 5G Network | No | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | |
| NFC | No | |
| USB | USB Type-C 2.0, USB On-The-Go | |
| Speed | HSPA 42.2/5.76 Mbps, LTE-A | |
| SIM | Nano SIM | |
| Dual SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Wireless Charging | No | |
| Camera (2020, December) | Vivo Y51 | other phones |
| Main camera | 48 MP (wide), 8 MP (ultrawide), 2 MP (macro) | |
| Features | LED flash, HDR, panorama | |
| Image | 1080p | |
| Selfie camera | 16 MP (wide) | |
| Multimedia (2020, December) | Vivo Y51 | other phones |
| Loudspeaker | Yes | |
| Handsfree | Yes | |
| Radio | Yes | |
| Video Playback | Yes | |
| Video Out | Yes | |
| Ring Tones | Yes | |
| 3.5 mm Jack | Yes | |
| Design (2020, December) | Vivo Y51 | other phones |
| Dimensions | 163.9 x 75.3 x 8.4 mm | |
| Waterproof | No | |
| Weight | 188 g | |
| Battery (2020, December) | Vivo Y51 | other phones |
| Capacity | Li-Po 5000 mAh, Fast charging 18W, 70% in 67 min (advertised) | |
| Placement | Non-removable | |
| Other (2020, December) | Vivo Y51 | other phones |
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, | |
