How to Password-Protect Notes and Documents on iPhone

You can password-protect notes on iPhone right inside the Notes app — lock them with your device passcode or a separate Notes password — and you can encrypt individual documents and PDFs in Pages and Preview. Each tool does its job well. None of them, though, puts every private file behind a single lock.

Lock a note in the Notes app

Since iOS 16, Notes gives you two ways to lock a note, and both keep your content end-to-end encrypted for iCloud accounts. Pick one before you start, because they behave differently.

Use your iPhone passcode

This is the simpler path: no extra password to remember. Open a note, tap the More button (the three dots), tap Lock, then choose Use iPhone Passcode. To use the passcode for Notes, iCloud Keychain has to be on. From then on, Face ID or Touch ID opens the note, and your passcode is the fallback.

The tradeoff is scope. Anyone who knows your device passcode — a partner you've shared it with, say — can open these notes too.

Or create a Notes-only password

For a second, separate secret, choose Create Password instead and set a hint. Now the note opens with that password (or Face ID / Touch ID), independent of your passcode. You can also set this up under Settings > Apps > Notes > Password.

One caution worth taking seriously: if you forget a custom Notes password, Apple can't recover those notes, and resetting the password only lets you lock new ones. Write the password down somewhere safe.

What locking actually does

A locked note stays open for a few minutes after you unlock it, then re-locks when you close Notes or the screen sleeps. Locking is also narrower than people expect. You can't lock a note that contains a PDF, audio, video, or a Pages, Numbers, or Keynote file. You also can't lock notes with tags, shared notes, or notes that sync over IMAP from Gmail, Yahoo, or Outlook.

Password-protect documents and PDFs

Notes covers text. For actual files, iPhone encrypts them one at a time.

Lock a PDF in Preview

Open the PDF in Preview, tap next to the filename, tap Lock, switch on Require Password, and enter the password twice to confirm. The lock travels with that file, so a copy you send stays protected.

Encrypt a Pages, Numbers, or Keynote file

In Pages, tap the More button, tap Document Options > Set Password, then enter and verify a password. Adding a password encrypts the document, and Face ID or Touch ID can open it. Numbers and Keynote work the same way.

Common problems and fixes

The Lock option is greyed out. The note probably holds an attachment Notes can't lock, or it's syncing from a non-iCloud account. Move the text into a fresh on-device or iCloud note and lock that.

You want to protect a photo, a scan, and a note together. Built-in tools won't do it — each lives in its own app with its own password, and the Hidden album is only a view filter, not encryption. For a mixed pile of private content, a dedicated vault app like Privara is the cleaner fit.

Locked notes still appear in search or previews. Locked content is hidden, but titles can surface. Keep sensitive details out of the note's first line.

Frequently asked questions

Can Apple recover a locked note if I forget the password?

No. With a custom Notes password, Apple has no access, and resetting the password won't reopen notes you already locked.

Why can't I lock a particular note?

Notes that contain PDFs, audio, video, or Pages, Numbers, and Keynote files can't be locked, and neither can tagged notes, shared notes, or notes synced over IMAP.

Does locking hide a note from someone who has my passcode?

If you lock with the device passcode, anyone who knows it can open the note. A separate Notes password adds a second secret they wouldn't have.

Doing this with Privara

Built-in locks are scattered across apps, and a forgotten password can mean lost notes. If you want one calm place for everything private, Privara is the best fit for the job. It keeps your private photos, videos, documents, and contacts — all four — inside a single vault protected by AES-256 encryption, so your content is encrypted at rest, not merely hidden from view.

From the outside, Privara looks and works exactly like a real calculator; the vault opens only when you enter your PIN. It needs no account and uploads nothing by default, which makes it zero-knowledge — your data stays yours. A decoy PIN opens a separate vault if you're ever asked to unlock the app, break-in detection captures a photo of anyone who enters the wrong PIN, and you can layer Face ID or Touch ID on top.

Your notes and documents belong with your photos and contacts, behind one lock you control. Get Privara on the App Store.