| Brand | Vivo |
| Type | Smart Phone |
| Model | Vivo Y21T |
| Connectivity | |
| Network | 2G, 3G, 4G |
| SIM | Dual Nano SIM |
| WLAN | Dual-band, Wi-Fi direct, Wi-Fi hotspot |
| Bluetooth | v5.0, A2DP, LE |
| GPS | A-GPS, GLONASS, Galileo, BDS |
| Radio | FM |
| USB | v2.0 |
| OTG | Yes |
| USB Type-C | YES |
| Body | |
| Style | Minimal Notch |
| Material | Glass front, plastic body |
| Dimensions | 164.3 x 76.1 x 8 millimeters |
| Weight | 182 grams |
| Display | |
| Size | 6.51 inches |
| Resolution | HD+ 720 x 1600 pixels (270 ppi) |
| Technology | IPS LCD Touchscreen |
| Features | Multitouch |
| Back Camera | |
| Resolution | Triple 50+2+2 Megapixel |
| Features | PDAF, f/1.8 aperture, LED flash, HDR, macro, depth & more |
| Video Recording | Full HD (1080p) |
| Front Camera | |
| Resolution | 8 Megapixel |
| Features | F/1.8 aperture, HDR & more |
| Video Recording | Full HD (1080p) |
| Battery | |
| Type and Capacity | Lithium-polymer 5000 mAh (non-removable) |
| Fast Charging | 18W Fast Charging |
| Reverse Charging | Yes |
| Performance | |
| Operating System | Android 11 (Funtouch 12) |
| Chipset | Qualcomm Snapdragon 680 4G (6 nm) |
| Processor | Octa core, up to 2.4 GHz |
| GPU | Adreno 610 |
| Storage | |
| RAM | 4GB |
| ROM | 128GB (eMMC 5.1) |
| MicroSD Slot | Dedicated slot |
| Sound | |
| 3.5mm Jack | Yes |
| Features | Loudspeaker |
| Security | Fingerprint (Side-mounted), Face Unlock |
| Sensors | Fingerprint, Accelerometer, Proximity, E-Compass |