The phone has a Super AMOLED FHD+ 6.5in display, a 48MP wide, 12 MP ultrawide, 5MP depth, and 5MP macro camera, a 4000mAh battery, and an optical in-screen fingerprint sensor.

[2][9] The Samsung Galaxy A51 has a four camera setup arranged in an "L" shape located in the corner with a rectangular protrusion similar to that of the iPhone 11 and the Pixel 4.

This phone has Samsung Knox for added system security.

[14] Samsung later announced a 5G variant in April 2020 featuring a larger 4500mAh battery and an Exynos 9811 SoC.

[15] A 5G ultra-wideband version with mmWave support is exclusive to Verizon powered by the Qualcomm Snapdragon 765G.