Any sneaky tips for clever iPhone behavior?

After having found to hold and press the scrolling numbers situating the time of an alarm set on Clock app, that I can then simply enter the digits by keyboard to set the time of my alarm, I was elevated. Left, though, yet unsatiated by one simple hidden omen, this “nice” but less than lofty if life-changing life hacking action using my phone’s native anatomical mechanisms, I figured there may be others still to discover.

I am wide-eyed and agape!

Any more tips and tricks, as we might say? Anyone?

[Edited by Moderator]