Vivo Y21 comes with 6.51 inches HD+ IPS LCD screen. It has a Full-View waterdrop notch design. The back camera is of triple 13+2+2 MP with PDAF, depth sensor, dedicated macro camera, LED flash etc. and Full HD video recording. The front camera is of 8 MP. Vivo Y21 comes with 5000 mAh battery with 18W fast charging. It has 4 GB RAM, up to 1.8 GHz octa-core CPU and Adreno 610 GPU. It is powered by a Qualcomm Snapdragon 460 (11 nm) chipset. The device comes with 64 GB internal storage and dedicated MicroSD slot. There is a side-mounted fingerprint sensor in this phone.

Among other features, there is FM Radio, Dual SIM, face unlock etc.