The smartphone has a Super AMOLED capacitive touchscreen providing 720 x 1600 pixels resolution with 270 PPI density.
The dimension of the smartphone is 163.6 x 75.3 x 8.9 mm and it weighs 192 grams.
The rear camera of the smartphone consists of a 48 MP (wide) + 8 MP (ultrawide) + 2 MP (macro) + 2 MP (depth) while on the front there is a 13 MP (wide) camera for shooting selfies.
The Samsung Galaxy A21s is powered by the Exynos 850 Octa-core processor.
The smartphone is fueled with a non-removable Li-Po 5000 mAh battery + Fast battery charging 15W.
The sensors include fingerprint (rear-mounted), accelerometer, proximity. Additionally, it features Bluetooth 5.0, GPS with A-GPS, USB, and a 3.5mm jack.