You can block porn on an iPhone or an Android phone for free, using settings that are already on the phone, in a few minutes. On an iPhone, the filter lives in Screen Time. On Android, you combine Google’s SafeSearch filter with a few system settings. Below are the steps for both, followed by the part most guides skip: how easy these settings are to undo, and what makes a block actually hold.
This page is for anyone who wants porn to be harder to reach on their own phone, whether you want to stop completely, cut down, or just stop drifting into it late at night. You do not need to have decided that you have a problem.
How to block porn on an iPhone
Apple’s adult-website filter is part of Screen Time. On iOS 26 and earlier, Apple describes these steps:
- Open the Settings app and tap Screen Time.
- Tap Content & Privacy Restrictions, then turn on Content & Privacy Restrictions.
- Tap App Store, Media, Web, & Games, then tap Web Content.
- Select Limit Adult Websites.
- To block specific sites the filter misses, tap Add Website below Never Allow and enter the address.
Then lock it. Without a Screen Time passcode, anyone holding the unlocked phone, including you at 1am, can switch the filter off in seconds. On iOS 26, go to Settings, Screen Time, scroll down and tap Lock Screen Time Settings, then enter a four-digit code. Apple’s passcode steps.
Apple reorganised Screen Time in iOS 27, and some labels have moved. The passcode, for example, is now under Screen Time, Manage Screen Time, Lock Screen Time Settings. Apple’s iOS 27 steps. If a menu name on your phone does not match, type “Web Content” or “Adult Websites” into the search field at the top of Settings.
Screen Time can also set time limits for certain apps or app categories. That helps with the places porn tends to find you that a web filter does not cover, such as a social app you scroll in bed or a second browser you rarely need.
How to block porn on Android
Android has no single switch like Apple’s, and menus differ between Samsung, Pixel and other brands. Three layers are worth setting up.
1. Turn on SafeSearch. In the Google app, tap your profile picture, then Settings, then SafeSearch, and choose Filter, which blocks explicit results. In a mobile browser, open your SafeSearch settings and choose Filter there. Google is clear about the limit: SafeSearch “only works on Google Search. It doesn’t affect content on other search engines or websites.” Google’s SafeSearch steps.
2. Consider a filtering Private DNS. Android lets you choose which DNS service the phone uses to look up websites. Open Settings, tap Network & internet, then Private DNS, choose Private DNS provider hostname, enter the hostname and tap Save. If you cannot find it, Google suggests searching Settings for “Private DNS” or asking your phone’s manufacturer. Android’s Private DNS steps. Some DNS services publish a family or adult-content filter hostname, which can block sites they have classified as adult in browsers and many apps, as long as the setting stays on. Check the provider’s own instructions for the exact hostname.
3. Use Digital Wellbeing for timers. In Settings, Digital Wellbeing, you can set daily app timers, and set a timer for an individual website you visit in Chrome. An App limits PIN stops the timers being changed without the code. Google notes that the steps vary between devices. Google’s Digital Wellbeing guide.
You may also read about Chrome’s “Try to block explicit sites” setting. It belongs to Family Link, which Google built for parents managing a child’s account, and even there Google says, “No filter is perfect.” Google Family Link help. For most adults it is not an option.
Can you permanently block adult sites?
Not on a phone where you know every code. Every setting above can be switched off by whoever holds the passcode, and all of them have gaps: other browsers, apps with their own built-in browser, social media feeds, private messages. So if you are asking how to permanently block adult sites, the honest answer is to make undoing the block slower and more social, not technically impossible.
The simplest way to do that is to let someone else hold the code. Ask a friend, a sibling or a support group member to type in the Screen Time passcode or the Digital Wellbeing PIN without showing you. On iPhone, Apple also offers Screen Time Passcode Recovery, which lets you reset a forgotten passcode with your own Apple Account (Apple’s iOS 27 steps). That is convenient, but it means the code is no longer only in your friend’s hands, so consider leaving it off.
If you have a partner, think twice before making them the keeper. Being your filter can turn them into a supervisor and put strain on the relationship. A friend who is not affected by your habits is often a better fit.
When built-in settings aren’t enough
If you keep finding your way around the built-in settings, a dedicated blocker app is the next step. These tools usually work in one of two ways. Filters block adult content across the phone, including in apps and browsers that Screen Time or SafeSearch miss, and are harder to remove. Accountability tools share a report of your activity with someone you choose, so the pause comes from knowing another person will see it. Some combine both. Whichever you choose, the same rule applies: it works best when someone other than you holds the key.
Why a pause helps more than willpower
A block does not remove the urge. What it does is put a gap between the urge and the video: a passcode screen, a message you would have to send, a minute of fiddling with settings. That gap is often where you get the chance to choose.
Men in an online abstinence forum described exactly this. In Fernandez and colleagues’ analysis of 104 abstinence journals, blocking apps “were typically found to be limited because there were usually means of circumventing them”, but they were useful as “one extra barrier that could intervene in a moment of vulnerability.” Members credited social support and accountability even more. These are self-reports from one forum, not a trial of blockers. Read the study.
Two low-tech habits add to the same gap: charge the phone outside the bedroom, and keep it out of the bathroom. When the pause arrives and the urge is still there, a short routine for the moment an urge hits can help you use it.
A blocker is one step, not the whole plan
Blocking works on access. It does nothing about the reasons you reach for the phone in the first place, like stress, boredom, loneliness or a bad day. As our page on porn as a way to cope puts it, “A blocker can interrupt access. It cannot have the difficult conversation, solve financial stress, or provide friendship.”
If you get round your own block, that is not proof you are hopeless. It is information about when the pull is strongest. Write down the time and what was going on, then adjust the plan. How to start changing your porn use covers choosing a goal and planning for difficult moments, and blocking is one part of that plan.
Quick answers
How do I turn off adult content filtering on my iPhone? In the same Web Content menu, by switching away from Limit Adult Websites. If a Screen Time passcode is set, you need that code first. That is exactly why it helps if someone else holds it.
Does blocking work in every browser and app? No. Each filter covers some places and misses others. Layering settings helps, but none of them catches everything.
Is there a free way to block porn on my phone? Yes. Everything in the iPhone and Android sections above is built in and free.
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