Phones used to be sturdy. When you had a screaming match on the phone you could end the conversation by violently slamming down the handset on the receiver. It created a good definite sound to whoever was on the other end.
Portable phones took that away but at least you could still press the button. Smart phones have fucked things completely. You remove the thing from your ear, wait for the end call button to appear and then you tap this smooth surface - it is so unsatisfying. You can't even start swearing immediately.
They should invent bouncing phones. When you want to hang up you just throw it at the wall, slam it down on your desk or bang it on your head.