/>
X
Technology
Why you can trust ZDNET : ZDNET independently tests and researches products to bring you our best recommendations and advice. When you buy through our links, we may earn a commission. Our process

'ZDNET Recommends': What exactly does it mean?

ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.

When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. Neither ZDNET nor the author are compensated for these independent reviews. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers.

ZDNET's editorial team writes on behalf of you, our reader. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. If we have made an error or published misleading information, we will correct or clarify the article. If you see inaccuracies in our content, please report the mistake via this form.

Close

How to clear the cache on your iPhone (and why you should)

Cache and cookies can clog your browser and slow down your iPhone's performance. Here's what you need to know.
Written by Maria Diaz, Staff Writer on
Reviewed by Alyson Windsor
Scrolling through iPhone
Image: Maria Diaz / ZDNet

How many tabs are open on your mobile browser right now? Go check. You might be surprised by what you find.

Americans spend over five hours a day on their smartphones. That's over five hours of your phone potentially accessing, retrieving, and saving cache and cookies, which can negatively impact your iPhone's storage space.

What is cache?

Cache is the temporary storage of some data: parts of a website or image from the last time you visited, for example. It's content from a website that is stored on your phone during a browser session to help the browser perform faster the next time you visit that page.

Also: How to clear Google search cache on Android

Cache data can slow down your phone's browsing performance since it takes up storage space in your device, so it's good to clear it out regularly.

NOTE: Keep in mind that clearing the cache will close all open tabs in Safari and will likely log you out of any websites, prompting you to sign in again.  

How to clear cache on iPhone

1. Go to your iPhone's Settings

Open the Settings app on your iPhone to delete the cache in Safari. 

iPhone's Settings
Image: Maria Diaz / ZDNet

2. Select Safari

In Settings, scroll down until Safari comes up, tap on it to select it.

Select Safari
Image: Maria Diaz / ZDNet

3. Find a button for Clear History and Website Data

Scroll down through the Safari options, until you find a button for Clear History and Website Data.

Clear History and Website Data
Image: Maria Diaz / ZDNet

4. Confirm by pressing Clear History and Data

A confirmation will appear, press Clear History and Data to confirm.

After confirming, the cache and cookies are deleted from your iPhone, but your autofill information should still be on your device.

Press Clear History and Data
Image: Maria Diaz / ZDNet

FAQ

How can I browse on Safari without history?

Turn on Private Browsing by opening Safari, then tap on Tabs, then Private.

Also: The best browsers for privacy

Is clearing cache the same as offloading?

Not exactly, though offloading may help if your phone is slowed down by low storage. Offloading uninstalls an app without deleting any documents and data associated with them. 

To offload an app, go to Settings, then General, choose iPhone Storage and select the app to offload, then tap on Offload App. If you ever download it again, you just pick up where you left off on that app. 

How can I clear the cache from Chrome on iPhone?

If Google Chrome is your preferred browser, it may have a substantial amount of data stored on your device, which could also slow down its performance. 

To clear the cache in Chrome, open the Chrome app and follow these steps:

  1. Go to Settings
  2. Tap on Privacy
  3. Select Clear Browsing Data
  4. Go through the items to delete
  5. Confirm by tapping Clear Browsing Data at the bottom of the screen

It seems that clearing the browsing data in Chrome doesn't close all open tabs, but it will log you out of websites, so you'll have to log back in to any sites you may have been in.

Also: Low on iPhone storage space? Do this instead of deleting your apps

Are cookies and cache the same thing?

Cookies and cache are not the same. Cookies are tiny pieces of data that websites send to your phone, including things like saved passwords to keep you logged into an account or even the website preferences from the previous time you visited. 

Though they do sound harmless, cookies can also track how you browse the internet. They monitor patterns in your browsing and search history, even seeing what you clicked on or what your mouse hovered over. Ever made an innocuous search on Amazon only to find ads for it on all the apps you use?

Can I block cookies on iPhone?

While you can block cookies on Safari, the ranks are divided on whether you should. Blocking cookies entirely means that websites won't be able to get information from you, but it also means that some websites may not even work correctly on your browser. A lot of users actually enjoy a more personalized browsing experience, so cookies are a good thing for them.

 If you'd like to block the cookies on Safari, follow these steps:

  1. Go to Settings and select Safari
  2. Tap on the toggle next to Block All Cookies
Editorial standards