Why am I such a millennial?

On my Samsung S6 you get a whole fullscreen screen if someone rings.. you can't do anything till a) you cancel the call you get b) you go to airplane mode c) the caller stops to call you.. while you get called, you can't do anything. i don't know if its the same on android 7 or other OS's,, but i think. my old iphone 4 have the same "problem".

I'm on a Oneplus 3 w/ android 8.0. When the phone rings with the screen already on, I get a drop down message with caller ID, and pickup/deny symbols. When my phone rings with screen locked, I can simpy unlock the phone and I get to the home screen with the incoming call at the top.