How to Block Porn on iPhone (2026 Guide)
A step-by-step guide to fully blocking pornography on iPhone using Screen Time, Safari restrictions, and LockIn so you can't undo it on a weak day.
How to Block Porn on iPhone (2026 Guide)
If you've tried blocking porn on your iPhone before, you already know the problem: you set the restrictions, then you remove them an hour later. The issue isn't Apple's tools — it's that you hold the passcode.
This guide shows you exactly how to lock down your iPhone properly, including a change in iOS 26 that most guides on this topic haven't updated for yet — and how LockIn closes the last loophole: you knowing the passcode.
Step 1: Open Screen Time
Go to Settings → Screen Time. If it's off, tap Turn On Screen Time.
Step 2: Enable Content & Privacy Restrictions
Tap Content & Privacy Restrictions and toggle it on.
Step 3: Block adult websites in Safari
- Tap Content Restrictions → Web Content
- Select Limit Adult Websites
- Optionally add specific sites under Never Allow
Step 4: Close the iOS 26 private browsing gap
This one's new. On iOS 17 and 18, Limit Adult Websites also blocked private browsing tabs automatically. As of iOS 26, it doesn't by default. If you're restricting your own phone, also turn on Supervised Mode in Screen Time setup — this restores the private-browsing coverage that used to come free with Step 3.
Skip this and you've followed last year's version of this guide, with a door left open.
Step 5: Block app installs and deletions
- Tap iTunes & App Store Purchases
- Set Installing Apps to Don't Allow
- Set Deleting Apps to Don't Allow
This stops you from re-downloading Safari alternatives like Chrome, Brave, or Telegram.
Step 6: Set a Screen Time passcode
Tap Use Screen Time Passcode and pick a 4-digit code.
This is where most people fail. If you set the passcode yourself, you can remove it yourself.
Step 7: Lock the passcode with LockIn
LockIn generates a passcode that you never see, locks it for a duration you choose (1 day to 1 year), and only reveals it when the timer ends.
That means: - You can't turn off Screen Time - You can't whitelist a porn site - You can't reinstall a browser - You can't delete the blocker
If you already did this and it's not working
Three usual causes: - You're on iOS 26 and skipped Supervised Mode — see Step 4. - You added a recovery Apple ID to Screen Time. That lets you reset the passcode from a second device in under a minute. Either skip recovery entirely or use a passcode someone else controls. - A newer app has its own in-app browser that Safari restrictions don't touch — common with social apps. Block app installs (Step 5) before this becomes a problem, not after.
Common questions
Does this work in incognito/private browsing? On iOS 17/18, yes, automatically. On iOS 26, only if you've also enabled Supervised Mode (Step 4) — this is the most common gap right now.
What about other browsers? Block app installs (Step 5) so you can't download Chrome, Firefox, Brave, or Opera.
Can I unlock early? No. That's the entire point.
Does this work on a phone shared with someone else, like a partner? Not well — shared passcodes and shared Apple IDs both create a recovery path. This works best on a device only you control.