Safari blocks pop-ups by default on iPhone, and you turn it off in Settings

Your iPhone's Safari browser comes with a built-in pop-up blocker that stops most windows from opening without your permission. If a website you trust needs to open a new window and can't, the blocker is likely the reason. You can turn it off for Safari entirely, or you can allow pop-ups just for one website.

The pop-up blocker lives in your iPhone's Settings app, not in Safari itself. This matters because it means the setting applies to all websites you visit in Safari — there's no per-site toggle inside the browser.

Key Takeaways

  • Open Settings, tap Safari, and toggle off "Block Pop-ups" to allow pop-ups on all websites.
  • Turning off the blocker affects every website you visit, so you may see unwanted pop-ups from sites you don't trust.
  • If only one website needs pop-ups, you can allow them just for that site by tapping the pop-up icon in Safari's address bar.
  • Pop-ups and pop-unders (windows that open behind your current window) are blocked separately — turning off one does not turn off the other.

Turn off the pop-up blocker for all websites

Open the Settings app on your home screen. Scroll down and tap Safari. Look for the toggle next to Block Pop-ups and tap it once to turn it off. The toggle will turn white or gray, depending on your iPhone's appearance settings.

Once you do this, Safari will allow pop-ups from any website. You may start seeing unwanted pop-ups from sites you don't trust, so this is worth doing only if you actually need pop-ups to work on a specific site.

Allow pop-ups just for one website

If you want to keep the blocker on but let one website open pop-ups, you don't have to change Settings. Instead, visit the website in Safari and try to open the pop-up. Safari will block it and show a small icon in the address bar — it looks like a square with an arrow or a circle with a line through it, depending on your iOS version.

Tap that icon. A menu will appear with the option to Allow Pop-ups for This Website. Tap it. From then on, Safari will allow pop-ups from that specific website, even though the blocker is still on for everywhere else.

If you change your mind later, go back to that website, tap the same icon in the address bar, and select Block Pop-ups for This Website.

Why websites ask for pop-ups in the first place

Most pop-ups are advertisements, and Safari blocks them to keep your browsing cleaner and faster. But some legitimate websites use pop-ups for real functions — a bank might open a pop-up for two-factor authentication, a ticketing site might open a new window to show your confirmation, or a map process might pop open directions in a separate window.

The blocker can't tell the difference between a useful pop-up and an ad, so it blocks all of them. That's why you sometimes have to turn it off or allow it for a specific site.

The difference between pop-ups and pop-unders

A pop-up opens in front of your current window. A pop-under opens behind it, so you don't see it until you close or minimize Safari. Safari's blocker stops both, but they are controlled by separate settings.

If you turn off "Block Pop-ups" but still don't see a window you're expecting, the website might be trying to open a pop-under instead. Unfortunately, there is no separate toggle for pop-unders in Safari's settings — turning off the main pop-up blocker is the only way to allow them.

What to do if a website still won't open a pop-up

Even with the blocker off, some pop-ups won't open. This usually means the website itself has a problem, not your iPhone. Try refreshing the page by pulling down from the top of the screen and releasing, or closing Safari completely and opening it again.

If that doesn't work, the website might require a specific browser feature that Safari doesn't support, or it might be broken on mobile devices altogether. Try visiting the site on a computer if you have one, or contact the website's support team to ask whether they support pop-ups on iPhone.

Frequently Asked Questions

Does turning off the pop-up blocker slow down my iPhone?

No. The blocker uses very little processing power, and turning it off won't make Safari faster or your iPhone run better. If Safari feels slow, the cause is usually something else — too many tabs open, a slow internet connection, or a website with heavy graphics.

Can I block pop-ups in other browsers like Chrome or Firefox?

Yes. Chrome and Firefox both have pop-up blockers, and they work similarly to Safari's. In Chrome, go to Settings, tap Privacy, and toggle off "Block Pop-ups". In Firefox, go to Settings, tap Privacy, and turn off "Block Pop-ups".

Will allowing pop-ups for one website affect my privacy?

Allowing pop-ups doesn't change what data the website can see about you. Pop-ups are just windows — they don't give a site access to your location, contacts, or browsing history unless you already gave permission for those things separately.

What if I accidentally allowed pop-ups and want to block them again?

Go back to that website, tap the icon in the address bar, and select "Block Pop-ups for This Website". Or go to Settings, tap Safari, and look for "Pop-up Exceptions" or a similar option to see which sites you've allowed and remove them from the list.