My bias is ten years of Android before I switched to iOS, and I failed spectacularly to select multiple images in the Photos app and delete them.
It seemed to work sometimes, and sometimes it would only drag the picture under my finger until I noticed a "Select" button in the upper right corner.
Doing the same thing in the Google Photos app for iOS is so much easier, and it just works.™
Text input and editing are still my biggest hurdle on iOS. I make more typos than on Android, and editing text in input fields is always a strange experience. Selecting single words and correcting some letters still feels "alien" after over a half year on iOS.
If you hold down the spacebar in iOS, you can move the text cursor around pretty easily. You can also double tap a word to select it. Sometimes it is a little clunky though…
In the context of Don Norman's book, this is a bad design with hidden affordances and missing signifiers. How should a new user discover that they have to shake their phone to undo some text editing?
Text input and editing are still my biggest hurdle on iOS. I make more typos than on Android, and editing text in input fields is always a strange experience. Selecting single words and correcting some letters still feels "alien" after over a half year on iOS.