You can't directly password protect a Pages document on an iPhone. However, you can use the built-in "Lock with Password" feature in the Files app to secure your document.
Here's how:
- Open the Files app on your iPhone.
- Locate your Pages document within the Files app.
- Tap and hold the document until a menu appears.
- Select "Share" from the menu.
- Tap "Lock with Password" from the sharing options.
- Enter and confirm your desired password.
- Tap "Done".
Now, whenever you open your Pages document, you'll be prompted to enter your password.
Important Note: This password protection method only works within the Files app. When you share the document with others, they will be able to access it without a password.