Your iPhone collects an astonishing amount of data about you — where you go, which apps you use, even how you type. Apple gives you the switches to stop most of it, but they are scattered across Settings and most default to "share everything." Here are the iPhone privacy settings you should change right now.

1. Stop apps from tracking you across other apps

App Tracking Transparency was supposed to end cross-app tracking, but only if you answer the prompts correctly:

Go to Settings → Privacy & Security → Tracking .

Turn off Allow Apps to Request to Track entirely.

With this off, apps cannot even ask — they are denied by default. This single toggle blocks the most invasive form of mobile advertising tracking.

2.…