Where to find cookie settings on iPhone
Cookie settings on iPhone live in the Settings app under Safari, not in Safari itself. Open Settings, scroll down to find Safari (it appears alphabetically), tap it, then look for "Privacy & Security" near the top of that menu. The cookie controls are there.
If you use a different browser like Chrome or Firefox, the settings live in that app's own menu instead — Safari is the built-in browser where Apple puts these controls in the system settings. This separation can confuse people because you might expect to find them inside the Safari app, but Apple groups all Safari preferences in the main Settings app.
Key Takeaways
- Cookie settings for Safari are in Settings > Safari > Privacy & Security, not inside the Safari app itself.
- You can block all cookies, allow only cookies from sites you visit, or allow all cookies — the middle option is the default and works for most people.
- Clearing cookies from Safari happens in the same Privacy & Security menu under "Clear History and Website Data."
- Third-party cookies (ads that follow you across sites) can be blocked separately from first-party cookies (cookies the website itself sets).
- Chrome, Firefox, and other browsers have their own cookie settings inside their apps, not in iPhone Settings.
The three cookie-blocking options and what they do
Under "Prevent Cross-Site Tracking," you'll see a toggle that is on by default. This blocks third-party cookies — the ones that advertisers use to follow you across different websites. Turning this on is usually enough for most people and is already your default setting.
Below that is a section called "Block All Cookies" with three choices. The first option, "Allow from Websites I Visit," is the default. This lets websites you're actually on set cookies so they can remember you, keep you logged in, and store your preferences. The second option blocks all cookies entirely, which can break some websites. The third allows all cookies with no restrictions. Most people should leave this on the default setting.
The difference matters: a first-party cookie is set by the website you're visiting (so it remembers your login or shopping cart). A third-party cookie is set by an ad network or tracker that appears on many different sites. Blocking third-party cookies stops ads from following you; blocking all cookies can make websites stop working properly.
How to clear existing cookies from your iPhone
Changing your cookie settings going forward doesn't erase cookies that are already stored. To delete them, stay in Settings > Safari > Privacy & Security and tap "Clear History and Website Data" near the bottom of the screen.
A menu will appear asking what time range you want to clear: the last hour, today, today and yesterday, or all time. Choose the range you want, then tap "Clear History and Data." This removes cookies, browsing history, and cached website data all at once — you cannot clear only cookies without clearing the other data.
If you want to clear data regularly without doing it by hand, you can set Safari to clear history and cookies automatically when you close the app. This is in the same Privacy & Security menu, under "Clear History and Website Data" — look for the option that says "Automatically" and choose when you want it to happen.
Cookie settings for Chrome, Firefox, and other browsers
Chrome, Firefox, Edge, and other third-party browsers on iPhone do not use the Safari settings in the main Settings app. Instead, each browser has its own cookie and privacy controls inside the app itself.
In Chrome, tap the three-line menu at the bottom right, go to Settings, then Privacy, and you'll find cookie options there. In Firefox, tap the menu button (three horizontal lines), go to Settings, then Privacy, and look for "Cookies." The exact path varies by browser, but the pattern is the same: open the app, find Settings or Preferences, then look under Privacy or Security.
These browser-specific settings override the Safari settings in your main Settings app — they only affect that particular browser. If you use multiple browsers, you may need to adjust cookie settings in each one separately.
What happens when you block cookies
When you block all cookies, some websites may not work properly. You might not be able to stay logged in, your shopping cart might empty, or the site might not remember your preferences. This is why the default setting allows cookies from sites you visit — it balances privacy with functionality.
Blocking third-party cookies (the default) rarely breaks websites because those cookies are usually just for advertising. You'll see fewer ads that follow you across the internet, but the website itself will still work normally.
If you block all cookies and a website stops working, you can temporarily allow cookies for just that site. Tap the address bar in Safari, then tap the "aA" button on the left, scroll down to "Website Settings," and toggle "Block All Cookies" off for that specific domain.
When to adjust your cookie settings
Most people should leave the default settings alone — "Prevent Cross-Site Tracking" on and "Block All Cookies" set to "Allow from Websites I Visit." This blocks the ads that follow you while keeping websites functional.
You might want to block all cookies if you're on a shared device and don't want websites to remember you. You might want to allow all cookies if you use a lot of websites that require them and you trust the sites you visit. You might want to clear cookies regularly if you're concerned about stored data or if you notice websites behaving strangely.
Frequently Asked Questions
Will blocking cookies stop ads from showing up?
No. Blocking cookies stops ads from following you across different websites, but you'll still see ads on the websites you visit. The ads just won't be personalized based on your browsing history. You need a separate ad blocker app to remove ads entirely.
If I clear cookies, will I have to log back into everything?
Yes. Clearing cookies removes the login tokens that keep you signed in, so you'll need to log back into websites and apps that use Safari login. Apps that have their own login (like the Gmail app or Facebook app) are not affected because they don't use Safari cookies.
Do I need to change cookie settings if I use private browsing?
Private browsing (Safari's private tabs) doesn't use your cookie settings — it blocks all cookies and tracking automatically while you're in that tab. When you close the private tab, all cookies and history from it are deleted. You can use private browsing for sensitive browsing without changing your main settings.
What's the difference between blocking third-party cookies and blocking all cookies?
Third-party cookies are set by advertisers and trackers on other websites; blocking them stops ads from following you. First-party cookies are set by the website itself to keep you logged in and remember your preferences. Blocking all cookies breaks most websites, so the default allows first-party cookies while blocking third-party ones.
Do these settings explore to apps, or just Safari?
These settings explore only to Safari and websites you visit in Safari. Apps like Instagram, Twitter, or Gmail have their own login systems and don't use Safari cookies. If an app uses Safari to log you in (some apps do), then these settings affect that login.