Vivo V21 comes with a 6.44-inch touchscreen display with a resolution of 1080×2400 pixels and an aspect ratio of 20:9. Vivo V21 is powered by an octa-core MediaTek Dimensity 800U processor. It comes with 8GB of RAM. The Vivo V21 runs Android 11 and is powered by a 4000mAh battery. The Vivo V21 supports proprietary fast charging. As far as the cameras are concerned, the Vivo V21 on the rear packs a triple camera setup featuring a 64-megapixel primary camera with an f/1.79 aperture; an 8-megapixel camera with an f/2.2 aperture, and a 2-megapixel camera with an f/2.4 aperture. The rear camera setup has autofocus. It has a single front camera setup for selfies, featuring a 44-megapixel sensor with an f/2.0 aperture. The Vivo V21 runs Funtouch OS 11.1 is based on Android 11 and packs 128GB of inbuilt storage that can be expanded via microSD card. The Vivo V21 is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Vivo V21 measures 159.68 x 73.90 x 7.29mm (height x width x thickness) and weighs 176.00 grams. It was launched in Arctic White, Dusk Blue, and Sunset Dazzle colours. Connectivity options on the Vivo V21 include Wi-Fi, GPS, Bluetooth v5.10, USB OTG, USB Type-C, 3G, and 4G. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and in-display fingerprint sensor.