The phone comes with a 6.50-inch touchscreen display with a resolution of 720x1600 pixels. Samsung Galaxy A21s is powered by a 2GHz octa-core Samsung Exynos 850 processor. It comes with 4GB of RAM. The Samsung Galaxy A21s runs Android 10 and is powered by a 5000mAh non-removable battery.
The Samsung Galaxy A21s runs One UI based on Android 10 and packs 64GB of inbuilt storage that can be expanded via microSD card (up to 512GB) with a dedicated slot. The Samsung Galaxy A21s measures 163.60 x 75.30 x 8.90mm (height x width x thickness) and weighs 192.00 grams. It was launched in White, Black, and Blue colours.