My number one issue is when I am on a phone call and I want to use other apps. The damn hang-up button is right where you need to swipe up to open the phone or to go to the Home Screen. I hang up the call often on accident
Next one is badge app icons. If you have a conversation muted, let’s say in Messages or Facebook Messenger, you’ll still get badge app icons, which is super annoying when you have group texts and people you want to silence when all you want to see are badge app icons for new messages that AREN’T muted. You see a badge app icon, and your instinct is to find out what you are being notified for.
Lack of proper file navigation, universal back gestures, poor implementation of ProMotion, lack of 3rd party app stores, and Siri still being ass are my biggest reasons for moving on to the S25 Ultra when preorders become available.
Way of managing app appearance on each of the screens. At least in the old days, I could use iTunes Windows app to do this a little more easily, but still ugly.