I just switched from a cheap Redmi 11s to the 15 plus. I have to say that I truly regret it. There are so many limitations with ios, so few customizations are available. It really feels to me like a downgrade. Just one example, you can’t (easily) even change an app’s icon! You have to go through this whole procedure using the shortcuts app. I hadn’t had an iPhone since my 8 Plus and was amazed that they haven’t even changed the way you can arrange icons, it’s still this silly hold until all the icons “jiggle” and then rearrange. Another huge downside has been the esim only, this has caused some major problems for me. The beauty of Android is anything that you don’t like you can change, with ios this just isn’t the case. I never really liked Samsung because of the way they had all their apps/services integrated but I would say look into another brand’s flagship before going to the iPhone.