Question about Samsung Galaxy A54 5G

Should be Samsung, not Saturday, was a typo :-).

Quite simply, Saturday can make much more profit if all flagship phones only have fixed and non-expandable memory. And the buyers then often choose a phone with more memory than they actually need, because the memory is not expandable. Almost all smartphone manufacturers make a lot of profit with this, because fixed memory only costs a few dollars. But the customer is charged at least 50 or 100. Sometimes even more.