How to Clear Cache on iPhone
Learn how to clear cache and browsing data on your iPhone to free up storage and fix slow performance. Quick and easy steps.
Our iPhones get slower over time and we always assumed it was Apple making us upgrade. Turns out, a big chunk of that slowness is cached data piling up. Every app stores temporary files, and Safari alone can accumulate gigabytes of browsing data without you realizing it.
Clearing the cache does not delete your photos, contacts, or messages. It removes temporary files that apps create to load faster but that eventually just take up space and cause problems. Think of it like cleaning out your junk drawer. Everything still works, it just works better.
This guide covers the two main types of cache that matter most. Safari's browsing data and individual app caches. Together they usually free up 1 to 5 GB of storage and noticeably improve performance.
Clear Safari browsing data
Open Settings and scroll down to Safari. Tap it, then scroll down and tap Clear History and Website Data. Select a time range (choose All History to clear everything). Tap Clear History. This removes your browsing history, cookies, and cached files from Safari. Your bookmarks and saved passwords are not affected. If you use Safari on other Apple devices with the same iCloud account, clearing here clears everywhere.
Heads up: Clearing Safari data logs you out of most websites. You will need to sign in again to sites like Gmail, Amazon, and social media. Make sure you know your passwords or have them saved in a password manager before clearing.
Close individual Safari tabs
Open Safari and tap the tab switcher icon in the bottom right corner. It looks like two overlapping squares. If you have dozens of open tabs, they are each using memory. Tap and hold Done at the bottom, then select Close All Tabs. On older iOS versions, you can swipe each tab left to close it individually. Keeping your tab count under 10 helps Safari run smoothly.
Check which apps use the most storage
Go to Settings, then General, then iPhone Storage. Wait a few seconds for the list to load. It shows every app sorted by how much space it uses. The number next to each app includes both the app itself and its cached data. Look for apps with unusually large sizes compared to what you would expect. Social media apps, streaming apps, and messaging apps are the biggest offenders. Instagram, TikTok, and Spotify can each store several gigabytes of cached content.
Offload or delete heavy apps
Tap any app in the iPhone Storage list. You will see two options. Offload App removes the app but keeps its data, so reinstalling it restores everything. Delete App removes everything including saved data. For apps you use regularly but that have ballooned in size, offloading and reinstalling is the cleanest approach. It forces the app to rebuild its cache from scratch. For apps you no longer use, just delete them.
Good to know: Turn on Offload Unused Apps in Settings, then App Store. This automatically removes apps you have not opened in a while but keeps their data. When you tap the app icon again, it reinstalls instantly. It is a set-it-and-forget-it way to keep storage in check.
Clear cache in specific apps
Some apps have their own cache clearing option inside their settings. In Spotify, go to Settings, then Storage, then Delete Cache. In Slack, go to Settings, then Advanced, then Reset Cache. Not all apps offer this, but the ones that do usually have it under a Storage or Data section in their in-app settings. Check your heaviest apps one by one. This can recover significant space without losing your login or preferences.
That is all there is to it. We clear our Safari cache every month or so and offload unused apps every few months. The phone consistently feels faster afterward. If your iPhone is still sluggish after clearing caches, try restarting it. A restart clears the system memory and closes background processes that may be eating up resources. Hold the side button and volume button, slide to power off, then turn it back on after ten seconds. Between cache clearing and regular restarts, most performance issues disappear.
Questions we get asked about this
Answers from experience, not a textbook.
No. Cache is temporary data that apps create to load content faster. Your photos, messages, contacts, and app data are stored separately. Clearing cache removes things like website images Safari downloaded, thumbnails an app pre-loaded, and temporary files from streaming services. Your personal content stays exactly where it is.
Every month or two is a good rhythm for Safari. For app caches, check iPhone Storage every few months and address anything that looks oversized. You do not need to clear everything constantly. Caches exist because they genuinely speed things up. The problem only comes when they grow too large and start competing for the limited storage space on your phone.
The most common culprits are cached data in apps you do use, your photo library including iCloud backups, and the Other or System Data category. Check iPhone Storage in Settings to see the breakdown. Messages with lots of photos and videos can also take up surprising amounts of space. Tap Messages in the storage list to see per-conversation usage and delete old threads with large attachments.
Unfortunately, no. Apple does not provide a one-tap option to clear all app caches simultaneously. You need to handle Safari and each app individually. This is by design, as Apple wants apps to manage their own data. Third-party cleaner apps exist but most are not effective on iOS due to sandbox restrictions. The manual approach in this guide is the most reliable method.
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