Roger has an old Samsung Galaxy S7, which is now unlocked and carrier free. How will he get updates now? Leo says that he should still get updates from it, but in many cases they come through WiFi and not over the air. So if he's attached to WiFi with it, he should get the update directly from Samsung. That's how Apple does it, but he'll need to talk to his existing carrier to find out.
The chatroom says that he may have to use Samsung Kies, a software app for Windows that will give him the ability to find the available updates and push them to his phone.