Samsung is a very valuable company and Samsung smartphones tend to be quite premium. If you want a premium Android smartphone then Samsung is the best for you.

Samsung's smartphone is the best seller because Samsung's smartphones are more value for money that's why people like to buy it.

The user interface of Samsung's smartphone is very clean and one ui is also very optimized, so it is a lot of fun to use it.

Samsung improves the design of its smartphone a lot, Samsung's Fold smartphone comes with a very unique design.

Samsung also launches its smartphone in the budget category, that's why people who can not afford expensive smartphones also get a good smartphone.