The codes are relatively idiot proof and limited in their functionality. You’re able to pop up your iPhone’s internal hood, but you won’t have much of a chance to mess things up.

Again, these secret iPhone codes aren’t exclusive to iOS 15. But seeing as how iOS 15 was released just a few weeks ago, we’d be remiss if we didn’t briefly highlight some of the cooler iOS ...

So we decided to test some of them and share our thoughts about those unknown iPhone codes. Note: these are note iOS15-exclusive codes but they work in this version of the system as well.

This happens when a certain code is not included in the "passes" considered by the app. For more how-to articles, you can check scanning documents directly to your Mac using your iPhone.

But iOS 17 being able to auto delete iPhone verification codes after they’ve been used is a handy feature that you’ll probably benefit from regularly if not every day.