Samsung Galaxy M21s smartphone was launched on 5th November 2020. The phone comes with a 6.40-inch touchscreen display with a resolution of 1080x2340 pixels. Samsung Galaxy M21s is powered by an 8 MHz Samsung Exynos 9611 processor. It comes with 4GB of RAM. The Samsung Galaxy M21s runs Android 10 and is powered by a 6000mAh battery. The Samsung Galaxy M21s supports proprietary fast charging.

As far as the cameras are concerned, the Samsung Galaxy M21s on the rear packs a 64-megapixel primary camera with an f/1.8 aperture; a second 8-megapixel camera with an f/2.2 aperture and a third 5-megapixel camera with an f/2.2 aperture. It sports a 32-megapixel camera on the front for selfies, with an f/2.0 aperture.

The Samsung Galaxy M21s runs One UI Core 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 M21s is a dual-SIM (GSM and GSM) smartphone that accepts Nano-SIM and Nano-SIM cards. The Samsung Galaxy M21s measures 159.20 x 75.10 x 8.90mm (height x width x thickness) and weighs 191.00 grams. It was launched in Black and Blue colours.

Connectivity options on the Samsung Galaxy M21s include Wi-Fi 802.11 a/b/g/n/ac, GPS, Bluetooth v5.00, USB Type-C, 3G, and 4G. Sensors on the phone include accelerometer, ambient light sensor, compass/ magnetometer, gyroscope, proximity sensor, and fingerprint sensor.