Vivo Y21G mobile was launched on 7th April 2022. The phone comes with a 60 Hz refresh rate 6.51-inch display offering a resolution of 720x1600 pixels (HD+). It comes with 4GB of RAM. The Vivo Y21G runs Android 12 and is powered by a 5000mAh non-removable battery. The Vivo Y21G supports proprietary fast charging.

As far as the cameras are concerned, the Vivo Y21G on the rear packs a dual camera setup featuring a 13-megapixel (f/2.2) primary camera, and a 2-megapixel (f/2.4) camera. It has a single front camera setup for selfies, featuring an 8-megapixel sensor with an f/2.0 aperture.

The Vivo Y21G runs FunTouch OS 12 is based on Android 12 and packs 64GB of inbuilt storage that can be expanded via microSD card with a dedicated slot. The Vivo Y21G is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Vivo Y21G measures 164.26 x 76.08 x 8.00mm (height x width x thickness) and weighs 182.00 grams. It was launched in Diamond Glow and Midnight Blue colours. It bears a plastic body.

Connectivity options on the Vivo Y21G include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v5.00, USB OTG, USB Type-C, FM radio, 3G, and 4G (with support for Band 40 used by some LTE networks in India) with active 4G on both SIM cards. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor.