I really like 3D touch for moving the cursor in text input fields.
https://developer.apple.com/design/human-interface-guideline...
Shame it’s got zero discoverability. Most people I know are surprised when I show them that. It also has quite a steep learning curve for some. Plus, some of the more advanced useful stuff is pretty hard to use - for example, did you know you can switch to text selection by “pulsing” your finger twice while pressing the keyboard?