The Samsung Galaxy M21 was announced in 2020, March 18 With 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio) Super AMOLED, 420 nits (peak), Powered by Exynos 9611 (10nm) and running Android 10, upgradable to Android 11, One UI 3.1 Core, the device delivered smooth performance and multitasking capabilities. while the Li-Po 6000 mAh, non-removable ensured long-lasting usage.