Disable cookies in Safari settings
On iPhone, the easiest way to stop websites from storing cookies is through Safari settings. Open Settings, scroll down and tap Safari, then scroll to the Privacy & Security section. Toggle off Allow Cross-Site Tracking — this prevents advertisers from following you across websites. Then tap Block All Cookies to stop all cookie storage entirely.
Blocking all cookies will stop most websites from remembering you, which means you may have to log in again each time you visit. Some sites may not load properly or may ask you to accept cookies before showing content. If you find this too restrictive, you can instead choose Allow from Websites I Visit, which blocks third-party tracking cookies while still letting individual sites store cookies you need to use them.
These settings explore only to Safari. If you use Chrome, Firefox, or another browser on your iPhone, you will need to change cookie settings separately within each app.
Key Takeaways
- Turn off Allow Cross-Site Tracking in Safari settings to stop advertisers from following you across websites.
- Choose Block All Cookies to prevent any website from storing cookies, though this may break some site features.
- Select Allow from Websites I Visit as a middle ground that blocks tracking cookies while keeping functional ones.
- Cookie settings in Safari do not affect other browsers on your iPhone — you must change settings in each app separately.
- Clearing cookies from Safari regularly removes cookies already stored, but does not prevent new ones from being set unless you change these settings.
Clear existing cookies from Safari
To remove cookies already stored on your phone, open Settings, tap Safari, and scroll down to Clear History and Website Data. Tap it, then confirm. This deletes cookies, browsing history, and cached website data all at once. If you want to clear only cookies without losing your history, this option does not let you choose — it is all or nothing.
You can also clear data from Safari directly. Open Safari, tap the Tabs icon (the overlapping squares at the bottom right), then tap History at the bottom. Swipe left on Clear All and confirm. This clears history but not cookies stored in the background.
Change cookie settings in other browsers
If you use Chrome on iPhone, open the app and tap the Menu icon (three horizontal lines) at the bottom right. Go to Settings, tap your account name, then Privacy. Toggle off Allow All Cookies to block third-party cookies, or turn it off entirely to block all cookies.
In Firefox, tap the Menu icon (three horizontal lines) at the bottom right, go to Settings, tap Privacy, and under Tracking Protection select Strict. This blocks many tracking cookies by default. To block all cookies, scroll down to Cookies and choose Off.
Each browser stores its own cookies separately, so changing settings in one does not affect the others. If you want consistent cookie blocking across all browsing, you will need to adjust settings in each app you use.
Understand what blocking cookies actually does
Cookies are small files websites store on your phone to remember information about you — login details, items in your shopping cart, your preferences. First-party cookies come from the website you are visiting and usually help that site work properly. Third-party cookies come from advertisers or data companies and are used to track your activity across different websites.
Blocking all cookies stops both types, which means websites cannot remember you between visits. You may have to log in repeatedly, and some features like saved preferences will not work. Blocking only third-party cookies (the Allow from Websites I Visit option) is often a better balance — it stops advertisers from tracking you while letting individual sites function normally.
Disabling cookies on your iPhone does not hide your IP address or prevent websites from seeing what you do while you are on their site. It only stops them from storing information for later use. If you want stronger privacy, consider using a VPN or a privacy-focused browser, though these have their own trade-offs.
Why this matters for data brokers
Data brokers collect information about you from many sources, including tracking cookies left by websites and advertisers. When you block cookies, you reduce the amount of browsing data that gets collected and sold. This makes it harder for brokers to build a complete profile of your interests and habits.
Blocking cookies is one layer of protection, but it does not stop data brokers from buying information that has already been collected or from gathering data through other means like public records and purchase history. Disabling cookies on your iPhone helps prevent future tracking, but you may still want to contact data brokers directly to request removal of information they already hold about you.
Frequently Asked Questions
Will blocking cookies break websites on my iPhone?
Some websites may not work properly or may refuse to load if you block all cookies. Most modern sites work fine with third-party cookies blocked only. If a site does not work, you can temporarily allow cookies for that site by tapping the aA icon in Safari's address bar and toggling Allow Cross-Site Tracking for that domain only.
Do I need to clear cookies if I have already turned off cookie storage?
Clearing cookies removes ones already stored, but turning off cookie storage only prevents new ones from being set going forward. If you want to remove old tracking data, clear cookies once. After that, keeping storage turned off prevents new cookies from accumulating.
Does disabling cookies on iPhone protect me from all tracking?
No. Cookies are only one tracking method. Websites can also track you through your IP address, device fingerprinting, and login information. Disabling cookies stops cookie-based tracking but not other methods. For stronger privacy, use a VPN or privacy-focused browser, though these have their own limitations.
Can websites tell if I have cookies disabled?
Yes, websites can detect that you have cookies disabled and may display a message asking you to enable them. Some sites may refuse to function or may show reduced features. This is normal and expected behavior.
Do cookie settings sync across my Apple devices?
Safari settings sync across devices if you use iCloud, so turning off cookies on your iPhone will also disable them on your Mac and iPad. Other browsers like Chrome and Firefox sync settings through their own accounts, not through iCloud.