To block websites on iPhone, go to Settings > Screen Time > Content & Privacy Restrictions > Content Restrictions > Web Content, choose Limit Adult Websites, then add the site under Never Allow.

That is the fastest path if you want to block one website in Safari or most iPhone browsers. If you are setting up a child's iPhone, blocking YouTube, or trying to stop bypasses, you need a few extra settings.

This guide shows the exact Screen Time steps, when to use each blocking method, and what to check when a blocked site still opens.

How to Block Websites on iPhone: The Fast Answer

Use Screen Time first. Apple built the web restrictions into iOS, so you do not need a sketchy blocker app for the basic job.

1. Open Settings.
2. Tap Screen Time.
3. Tap Content & Privacy Restrictions.
4. Turn on Content & Privacy Restrictions.
5. Tap Content Restrictions.
6. Tap Web Content.
7. Choose Limit Adult Websites.
8. Under Never Allow, tap Add Website.
9. Enter the website address, such as example.com.
10. Tap Done.

For a child, set a Screen Time passcode that they do not know. Without that passcode, website blocking is more of a suggestion than a rule.

Apple's official Screen Time path can change slightly between iOS versions, but the setting lives under Screen Time > Content & Privacy Restrictions > Content Restrictions > Web Content. Apple documents these parental-control options in its guide to using parental controls on a child's iPhone.

Choose the Right Website Blocking Method

Different searches mean different fixes. Pick the method that matches the problem.

Screen Time handles the common cases. DNS filters, focus apps, and managed-device tools belong in the advanced bucket.

How to Block a Specific Website on iPhone with Screen Time

If you only need to block one website on iPhone, use Never Allow inside Screen Time. This works best for known URLs like a social site, gambling site, adult site, or distracting news site.

1. Open Settings on the iPhone.
2. Tap Screen Time.
3. Tap Content & Privacy Restrictions.
4. Turn on Content & Privacy Restrictions.
5. Tap Content Restrictions.
6. Tap Web Content.
7. Choose Limit Adult Websites.
8. Under Never Allow, tap Add Website.
9. Add the domain, such as reddit.com.
10. Add common variants too, such as www.reddit.com and old.reddit.com if needed.

After that, test the site in Safari. If it still opens, check the troubleshooting section below before assuming Screen Time failed.

For best results, add the root domain first. Then add any subdomains the site uses. YouTube, Reddit, and some adult sites often use multiple domains or mobile URLs.

How to Block Adult Websites on iPhone

To block adult websites on iPhone, choose Limit Adult Websites under Screen Time's Web Content settings. This turns on Apple's adult-content filter and lets you add extra sites under Never Allow.

Use this setup when you want broad protection without building a full allow-list from scratch.

1. Go to Settings > Screen Time > Content & Privacy Restrictions.
2. Turn on Content & Privacy Restrictions.
3. Tap Content Restrictions.
4. Tap Web Content.
5. Select Limit Adult Websites.
6. Add extra domains under Never Allow.
7. Add trusted exceptions under Always Allow if Apple's filter blocks a safe site.

Do not treat this as perfect. Apple's filter helps with known adult-content categories, but no automatic filter catches every site. If this is for a child, use a Screen Time passcode and review the settings from time to time.

How to Allow Only Approved Websites on a Child's iPhone

Use Allowed Websites Only when you want a stricter setup. Instead of blocking bad sites one by one, the iPhone can allow only the websites you approve.

This is the cleaner option for younger kids. It is also more work, because every useful site needs to be on the allowed list.

1. Open Settings > Screen Time.
2. Tap Content & Privacy Restrictions.
3. Tap Content Restrictions > Web Content.
4. Choose Allowed Websites Only.
5. Review Apple's default allowed websites.
6. Tap Add Website for each site you want to allow.
7. Remove anything you do not want on the list.

Pair this with Family Sharing if you manage a child's Apple Account. Apple explains the family setup in its guide to Screen Time for a family member.

The important part is control. If the child knows the Screen Time passcode, they can change the rules.

How to Block YouTube on iPhone

To block YouTube on iPhone, block the website URLs and restrict the YouTube app separately. Website blocking alone does not stop the installed YouTube app.

Start with the web URLs:

1. Go to Settings > Screen Time > Content & Privacy Restrictions.
2. Tap Content Restrictions > Web Content.
3. Choose Limit Adult Websites.
4. Under Never Allow, add youtube.com.
5. Add www.youtube.com.
6. Add m.youtube.com.

Then handle the app:

1. Go back to Screen Time.
2. Tap App Limits.
3. Add a limit for YouTube if it is installed.
4. Set the limit to the shortest allowed time if you want to restrict usage.
5. Go to Content & Privacy Restrictions > iTunes & App Store Purchases.
6. Restrict installing apps if you do not want the user to reinstall YouTube.

If you are blocking YouTube for a child, also check browsers and in-app browsers. Some apps open YouTube links inside their own web views, which can make blocking feel inconsistent.

How to Block Websites on iPhone Without Screen Time

You can block websites on iPhone without Screen Time, but the right option depends on why Screen Time is not enough.

Use a DNS filter if you want broader filtering across apps and networks. Services like CleanBrowsing or OpenDNS can block categories such as adult content at the DNS level. This is useful for family devices, but setup takes more care than Screen Time.

Use a third-party blocker if you want schedules, focus sessions, or cross-device rules. Apps like Freedom, one sec, and other focus tools can help if your goal is productivity rather than parental control.

Use supervised-device tools only if you manage the device. Supervised mode and configuration profiles can enforce stricter rules, but they are not the normal path for a personal iPhone.

Avoid random browser profiles from sites you do not trust. Website blocking is sensitive. A profile can change network behavior on the device, so only install one from a source you understand.

How to Make Website Blocking Harder to Bypass

Screen Time works best when the person using the iPhone cannot change the settings.

Use this checklist:

• Set a Screen Time passcode that is different from the iPhone unlock passcode.
• Do not share the Screen Time passcode with the person you are restricting.
• Turn on Content & Privacy Restrictions after editing Web Content settings.
• Use Family Sharing for a child's iPhone when possible.
• Block both the website and the app when the service has both.
• Add URL variants, such as www, m, and country-specific domains.
• Review VPN, DNS, or profile settings if the device uses them.

There is no honest "permanent" block if the same person controls the iPhone, the Apple Account, and the Screen Time passcode. For adults blocking their own distractions, a blocker with schedules may work better than pretending self-control can be locked behind a passcode you already know.

What to Do If Website Blocking Is Not Working

If Screen Time website restrictions are not working, check the simple failures first. Most problems come from one missed toggle or one missing URL variant.

1. Confirm Content & Privacy Restrictions is turned on.
2. Confirm Web Content is set to Limit Adult Websites or Allowed Websites Only.
3. Add the exact URL variant that still opens.
4. Test domain.com, www.domain.com, and mobile versions like m.domain.com.
5. Close and reopen Safari or the browser.
6. Test in another browser on the same iPhone.
7. Check whether the content opens inside an app instead of a browser.
8. Check whether a VPN, private DNS, or configuration profile changes browsing behavior.
9. Restart the iPhone if settings look correct but do not apply.

If the site is YouTube, Reddit, TikTok, or another platform with both a website and app, treat the app as a separate problem. Block the website, then restrict the app with Screen Time.

How to Unblock Websites on iPhone

To unblock a website on iPhone, go back to Settings > Screen Time > Content & Privacy Restrictions > Content Restrictions > Web Content.

If the site appears under Never Allow, swipe left on it and delete it. If the site is missing from Always Allow while you use Allowed Websites Only, add it to the allowed list.

For a child's device, you may need the Screen Time passcode before iOS lets you change these settings.

Related iPhone Controls Worth Checking

Website blocks rarely live alone. If you are tightening up an iPhone for focus or family use, check these related settings too:

• Block apps on iPhone when the problem is the installed app, not the website.
• Block text messages on iPhone if spam or unknown senders are part of the same cleanup.
• Lock the iPhone screen for kids when you want a child to stay inside one app.

Softorino makes iPhone utility software for media and file workflows. For website blocking, Apple’s built-in Screen Time controls are still the right place to start.

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