The fastest way depends on what you're using the phone for

You can block websites on a phone in three ways: through your phone's built-in parental controls, through your internet provider's tools, or through a third-party app. Which one works best depends on whether you're blocking sites for yourself, for a child, or across your whole network. Built-in controls are usually free and take 10 to 15 minutes to set up. Third-party apps give you more detailed reporting but cost money and require more maintenance.

The method also depends on your phone's operating system. iPhones use Screen Time, Android phones use Digital Wellbeing or Family Link, and both have options to restrict access to specific websites without blocking the entire internet.

Key Takeaways

  • iPhones block websites through Screen Time by setting a Restrictions passcode and adding sites to the Restricted category.
  • Android phones use Digital Wellbeing (for yourself) or Family Link (for children you manage) to block specific websites.
  • Your internet provider may offer network-level blocking that works across all devices on your home wifi, which is harder to bypass than phone-level blocking.
  • Third-party apps like Bark or Net Nanny provide detailed activity reports but cost between $10 and $20 per month.
  • Phone-level blocking can be circumvented by switching to mobile data, so network-level blocking is more effective if you need to enforce restrictions.

Blocking websites on an iPhone using Screen Time

Open Settings, then tap Screen Time. If you haven't set up Screen Time before, tap "Turn On Screen Time" and choose whether this is your own device or a child's device. You'll create a Screen Time passcode — write this down somewhere safe, because you'll need it to change these settings later and Apple cannot reset it for you.

Once Screen Time is on, tap Content & Privacy Restrictions. Toggle the switch to turn it on, then enter your passcode. Tap Allowed Apps and make sure Safari is toggled on (you need Safari on to use the web restrictions). Go back and tap Content Restrictions, then tap Web Content. Choose Limit Adult Websites, then tap Add a Website Under "Never Allow". Type the website address you want to block — for example, youtube.com or facebook.com — and tap Add. Repeat for each site you want to block.

The sites you add to "Never Allow" will not load, even if someone knows the Screen Time passcode. However, this method only blocks Safari. If the phone has Chrome or another browser installed, those browsers are not restricted unless you disable them entirely in Allowed Apps.

Blocking websites on Android using Digital Wellbeing or Family Link

If you're blocking sites on your own Android phone, open Settings, then search for Digital Wellbeing. Tap it, then tap App Timers or Focus Mode depending on your Android version. These tools let you set time limits on apps but do not block specific websites. For website blocking on your own device, you'll need a third-party app.

If you're managing a child's Android phone, use Google Family Link instead. Open the Family Link app on your own phone, select the child's account, tap Controls on Google Play, then tap Manage all Google Play content. You can restrict apps by age rating, but Family Link does not have a built-in website blocker. You'll need to either use a third-party app on the child's phone or block sites at the network level through your router.

Some Android phones from Samsung include their own parental controls. Open Settings, search for Parental Controls, and follow the prompts to set a PIN and add restricted apps or websites. The exact steps vary by Samsung model and Android version.

Blocking websites through your internet provider or router

Network-level blocking works on all devices connected to your home wifi, including phones, tablets, and computers. This is harder to bypass than phone-level blocking because it blocks the site before it reaches the device.

Log into your router's admin panel by opening a web browser and typing your router's IP address — usually 192.168.1.1 or 192.168.0.1. You'll need your router's admin username and password, which are often printed on the router itself or came in the setup paperwork. Look for a section called Parental Controls, Content Filtering, or Access Control. Add the websites you want to block by their domain name. Save your changes.

If you don't feel comfortable accessing your router directly, contact your internet provider. Most providers offer free parental controls that you can manage through their website or app. Comcast Xfinity, Verizon Fios, and AT&T all have built-in filtering tools. Call your provider's customer service number and ask about content filtering or parental controls — they can often set it up for you over the phone.

Using third-party apps for more detailed control

Apps like Bark, Net Nanny, and Qustodio give you detailed reports about what websites are being visited, how much time is spent on each site, and alerts when restricted content is accessed. These apps typically cost $10 to $20 per month and require installation on the phone you want to monitor.

Most third-party apps work by installing a profile or VPN on the phone, which intercepts all web traffic and filters it according to your rules. This method is more effective than phone-level restrictions because it blocks sites even if the user switches browsers or uses a different app to access the web. However, these apps require ongoing maintenance — you need to keep them updated and monitor the dashboard regularly.

Third-party apps are most useful if you're managing multiple children's phones or if you need detailed reporting for your own use. For a single phone and basic blocking, the built-in tools on iPhone or your router's controls are usually sufficient.

What happens when someone tries to visit a blocked website

On an iPhone with Screen Time restrictions, the blocked site simply will not load. The browser shows a blank page or an error message. The person can see that the site is blocked but cannot bypass it without the Screen Time passcode.

On Android with Family Link, the behavior depends on how the restriction is set. Some apps show a message saying the content is restricted. Others simply fail to load. The child can request permission to access the site, which sends a notification to the parent's phone.

On a router-level block, the site will not load on any device connected to that wifi network. The browser typically shows a message from the router or internet provider saying the content is blocked. Users can bypass this by switching to mobile data, which is why router-level blocking is most effective for younger children who don't understand how to change network settings.

Why someone can still access blocked sites and how to prevent it

Phone-level blocking only works on that specific phone and only on the apps you've restricted. Someone can bypass it by using a different browser, switching to mobile data instead of wifi, or using a VPN app to hide their traffic. If you've blocked Safari on an iPhone but Chrome is still allowed, they can use Chrome instead.

Network-level blocking (through your router) is harder to bypass but not impossible. A tech-savvy person can change their phone's DNS settings to use a different DNS provider like 8.8.8.8, which bypasses the router's filtering. They can also use a VPN app, which encrypts their traffic so the router cannot see what sites they're visiting.

If you need to enforce blocking on a child's phone, combine methods: use phone-level restrictions to block the most common sites, disable the ability to install new apps or change settings, and set up router-level blocking as a backup. Disable mobile data or set a data limit so they cannot easily switch away from wifi. None of these methods is perfect, but layering them makes it much harder to circumvent.

Frequently Asked Questions

Can I block websites on someone else's phone without them knowing?

On an iPhone, you can only set Screen Time restrictions if you have physical access to the phone and the person's passcode. On Android, Family Link can be set up remotely if you have the child's Google account credentials, but the child will see the Family Link app on their phone. You cannot hide it. Network-level blocking through your router works invisibly on all devices, but only on your home wifi.

What if I forgot my Screen Time passcode on iPhone?

You cannot reset a Screen Time passcode without erasing the phone. Go to Settings, tap General, tap Transfer or Reset, then tap Erase All Content and Settings. This deletes everything on the phone. After setup, you can restore from a backup, but the Screen Time passcode will be gone. To avoid this, write down your passcode and store it somewhere safe when you first set it up.

Will blocking websites on my phone slow down my internet?

Phone-level blocking (Screen Time or Digital Wellbeing) has no effect on internet speed because the filtering happens on the phone itself. Router-level blocking may cause a very slight delay because the router has to check each request, but it's usually not noticeable. Third-party apps that use a VPN can sometimes slow your connection slightly because traffic is being routed through an extra server.

Can I block websites on a work phone?

If your employer manages the phone through Mobile Device Management (MDM), they can block websites remotely without your knowledge. If it's a personal phone, you can set up blocking yourself, but your employer may have policies against it. Check your employee handbook or ask your IT department before installing third-party blocking apps on a work device.

Do I need to block websites if I just want to limit screen time?

No. If your goal is to reduce time spent on certain apps or websites rather than block them completely, use Screen Time on iPhone or Digital Wellbeing on Android to set app timers instead. These tools let you set a time limit — for example, 30 minutes per day on Instagram — and the app becomes unavailable after the limit is reached. This is less restrictive than blocking and gives the person more control.