If your iPhone feels sluggish, apps are acting weird, Safari keeps loading stale pages, or you simply need to free up space, clearing cache is a smart first move. Cache is temporary data that helps apps and websites load faster, but over time it can pile up and cause storage clutter, outdated content, or performance issues.
The good news is that clearing cache on an iPhone is usually quick and easy. In most cases, you can clear Safari cache in a minute or two, and you can reduce app cache by deleting and reinstalling certain apps or using built-in storage tools. This guide walks you through the main methods and a few edge cases so you can clear out unnecessary data without losing what matters.
Summary
Here’s the fast version:
- Clear Safari cache in Settings.
- Offload or delete apps to remove app cache.
- Restart your iPhone after clearing cache if performance still feels off.
- Use iPhone Storage to spot apps taking up too much space.
- Sign out or reset app data only if you need a deeper cleanup.
Tutorial – How to Clear Cache on iPhone
The main way to clear cache on iPhone depends on what kind of cache you want to remove. Safari cache is easy to clear directly in Settings. App cache is a little different, since iPhone does not offer a universal “clear all cache” button for every app. The steps below cover the most useful method first.
Step 1: Open Settings on your iPhone
Start by tapping Settings from your Home Screen or App Library.
After you open Settings, you should see the main menu with options like Wi-Fi, Bluetooth, and General. This is where Apple keeps the tools for clearing browser data and managing storage.
Step 2: Tap Apps or Safari, depending on your iOS version
If you are using a newer iPhone, scroll down and tap Apps, then choose Safari. On some versions of iOS, Safari may appear directly in the main Settings list.
Once you open the Safari settings page, you will see options for search settings, privacy, and history controls. This is the area where you can clear the browser cache and website data.
Step 3: Tap Clear History and Website Data
Select Clear History and Website Data, then confirm when prompted.
After you tap it, Safari will remove browsing history, cookies, and cached website data from the device. You may notice websites load a little slower the next time you visit them, which is normal because Safari is rebuilding its cache from scratch.
Step 4: Confirm the action
Tap Clear History and Data to finish.
When the process is complete, Safari cache is cleared. Your browsing history on that device is also removed, so if you were hoping to keep a record of the sites you visited, take note of that before confirming.
Step 5: Clear app cache by offloading or reinstalling apps
For apps like social media, streaming, or shopping apps, cache is usually tied to the app itself. To clear that data, go to Settings > General > iPhone Storage, then tap the app you want to clean up.
On the app details screen, you may see Offload App or Delete App. Offloading removes the app while keeping its documents and data. Deleting removes the app and most of its cache; you can reinstall it from the App Store if needed.
Step 6: Reinstall the app if you chose to delete it
If you tapped Delete App, open the App Store, search for the app, and reinstall it.
After reinstalling, you should see a fresh version of the app with less stored junk data. This is one of the most effective ways to clear stubborn app cache when an app has grown bloated over time.
Step 7: Restart your iPhone
Press and hold the power button and volume button, then slide to power off. Turn the iPhone back on after a few seconds.
A restart is not cache clearing by itself, but it helps your iPhone settle after cleanup. If the device still feels slow or buggy, a reboot can refresh memory and fix minor glitches.
Alternative Methods or Edge Cases
Here are a few other ways to handle cache, depending on what you need:
Clear cache in other browsers
- If you use Chrome, Firefox, or another browser, you need to clear cache inside that app.
- Open the browser’s settings, look for Privacy, History, or Clear Browsing Data, then remove cached files.
Use offload instead of delete
- If you want to free space without losing app documents or login-related content, use Offload App.
- This is useful for large apps you do not use often.
Delete and reinstall apps with heavy cache
- Apps like TikTok, Instagram, YouTube, and streaming apps can build up a lot of cache.
- If storage is tight, deleting and reinstalling is often the cleanest reset.
Clear website data without wiping everything
- In Safari, you can sometimes manage website data more selectively under Settings > Safari > Advanced > Website Data.
- This is helpful if one website is causing trouble, but you do not want to clear everything.
If your iPhone storage is still full
- Cache may not be the only problem.
- Check Settings > General > iPhone Storage for photos, videos, message attachments, and large apps.
Frequently Asked Questions
Will clearing cache on iPhone delete my photos or contacts?
No, clearing browser cache does not delete your photos, contacts, or files. If you delete an app, though, app data may be removed unless it is synced to the cloud or preserved through offloading.
Does clearing Safari cache log me out of websites?
Often, yes. Clearing Safari history and website data can sign you out of websites because cookies are removed along with cache.
Can I clear cache for just one app on iPhone?
Not with a universal cache button. The usual method is to offload or delete the app, then reinstall it if needed.
Why does my iPhone not have a “clear cache” button?
Apple does not offer one master cache button for all apps. Cache is managed by Safari settings, app-specific settings, or storage management tools.
Is offloading the same as deleting?
No. Offloading removes the app but keeps its documents and data. Deleting removes the app and usually clears much more stored data.
How do I sign back in after clearing cache?
Open the app or website again and sign in as usual. If you cleared browser data, you may need to re-enter usernames and passwords for some sites.
Tips
- Clear Safari cache first if the problem is related to web browsing, page loading, or storage from websites.
- Use iPhone Storage to find the biggest space hogs before deleting random apps.
- If an app is glitchy, try offloading it before you delete it. You might keep your saved data.
- After clearing cache, give the app or browser a fresh launch. Old tabs or sessions can still hold onto stale behavior until reopened.
- If you use multiple browsers, clean each one separately. Safari cache does not clear Chrome cache.
- If you are short on storage, remove unused apps, old messages, and large attachments too. Cache is often only part of the problem.
Troubleshooting
- If Clear History and Website Data is grayed out, check whether Screen Time restrictions are enabled or whether Safari content restrictions are active.
- If an app still uses too much space after deleting it, restart the iPhone and check iPhone Storage again. Sometimes storage estimates take a moment to update.
- If Safari still shows old content, close the tab completely, reopen Safari, and refresh the page. Some sites keep content in the browser session, not just the cache.
- If you cannot find an app’s cache settings, that usually means the app does not provide one. Deleting and reinstalling is the simplest fix.
- If storage does not seem to drop after cleanup, wait a few minutes and check again. iPhone storage reporting can lag behind actual changes.
- If your iPhone remains slow after clearing cache, the issue may be low storage, a background update, or an app bug. Restarting the phone and updating iOS can help.
Conclusion
Clearing cache on iPhone is straightforward once you know where to look. For Safari, the process is built right into Settings. For apps, the best approach is usually to offload or delete the app, then reinstall it if needed.
If your goal is faster performance, more storage, or a clean start with a troublesome app, these steps should do the trick. Start with Safari, move to app storage, and restart your iPhone if things still feel off. In most cases, that is enough to get your phone back on track.

Matthew Burleigh has been writing tech tutorials since 2008. His writing has appeared on dozens of different websites and been read over 50 million times.
After receiving his Bachelor’s and Master’s degrees in Computer Science he spent several years working in IT management for small businesses. However, he now works full time writing content online and creating websites.
His main writing topics include iPhones, Microsoft Office, Google Apps, Android, and Photoshop, but he has also written about many other tech topics as well.