To find out the difference between the Galaxy A51 and Galaxy S9 you should compare their specifications side by side.
To identify these differences you have to compare the following specifications:
– Galaxy A51 vs. Galaxy S9 Dimensions and Weight.
– Galaxy A51 vs. Galaxy S9 Processor (CPU and GPU Type).
– Galaxy A51 vs. Galaxy S9 Screen size and technology.
– Galaxy A51 vs. Galaxy S9 RAM and Storage Size.
– Galaxy A51 vs. Galaxy S9 Camera Specs.
– Galaxy A51 vs. Galaxy S9 Battery Life and Size.