Guard Your Privacy
iOS offers many tools to help you protect your privacy, and in this chapter I explain how to take advantage of them.
Set a Passcode
Everyone should use a passcode. The passcode protects your photos, messages, browser history, and more from prying eyes. Here’s how to configure it:
Go to Settings > Touch ID & Passcode (or Settings > Passcode, or Settings > Face ID & Passcode).
Tap Turn Passcode On.
Enter a passcode.
Enter the passcode again to verify.
Consider enabling Settings > Touch ID (or Face ID) & Passcode > Erase Data. This feature automatically erases everything on a device after ten failed passcode attempts. If you recover the device, you can restore it from a backup, though that might be difficult or impossible while ...