The Secret Trackpad on the iPhone
Still keep your finger down. At this point, hard presses also let you select (highlight) text:
- Hard-press twice to select an entire sentence.
- Hard-press three times to select an entire paragraph.
Or use this trick: Move the insertion point to a word; if you now press hard, you highlight that word.
Every day I use 3D Touch to select text on my iPhone and double-click to select words on my Mac, but I never realized these could be combined.