The problem is when you try to write on the screen in a part of your arm or hand touches the screen it takes the input from the hand 1st. On the S4, I can shut off hand input when the pen touches the screen. I don't see that same toggle On the S7 plus.
My understanding is that this varies from app to app. If the app you one using expects a capacitive pen then the app needs to implement palm rejection. If the app expects an active pen then you will no issues with palm input. I use Nebo for note taking and have no issues with palm input as it expects an active pen. the S pen Not comes with the S7/+ is an active pen so it's really up to the software.
