ugh. iPhone keyboard secret: long-press teh space bar.
The keyboard turns into a blank trackpad and u can slide teh cursor anywhere in teh text. On older iPhones with 3D Touch, u could press firmly anywhere on teh keyboard to do the same thing.
bonus: while in trackpad mode, tap with a second finger to start selecting text, then slide to extend the selection. its so much better than tapping and fighting teh magnifying loupe.

