Go and research again, All Samsung phones get 3 years Android updates, the new rule is that from 2021, Some Flagship will get and additional year for security patches.They won't get Android update for 4th time, they will get just Security patches
The difference about Samsung and iphone is that, Samsung creates, Flagships, Flagship Killer, Midrange and Budget Phones. That is one of the reasons the updates are in different months,Iphones are only doing Flagships. When theres a new update, they ...