How to Clear Cache on iPhone: Safari, Apps, and System (2026 Guide)

If your iPhone feels slower than it used to, or you keep seeing “Storage Almost Full” warnings even though you have deleted photos and apps, cached data is a likely culprit. Browsers and apps quietly store temporary files to make things load faster, but over time that cache piles up, eats storage, and can cause glitchy behavior. The quick answer: there is no single “clear all cache” button on iPhone, you clear it in pieces. Go to Settings, then Apps, then Safari, and tap Clear History and Website Data to wipe the browser cache. Then check Settings, then General, then iPhone Storage to find apps hogging space, and clear or offload the worst offenders. This guide covers every method, for Safari, Chrome, individual apps, and the system itself, with exact menu paths for current iOS versions.

Quick Comparison: iPhone Cache-Clearing Methods

Check Your iPhone Storage First

Before clearing anything, it helps to see where your space is actually going. Go to Settings, then General, then iPhone Storage. The phone takes a moment to calculate, then shows a color-coded storage bar and a list of apps sorted by size. Tap any app to see a breakdown: the app itself, plus its “Documents & Data,” which includes cached files.

The tell-tale sign of a cache problem: an app whose Documents & Data is far larger than the app itself. A 200 MB app holding 3 GB of data is a prime candidate for cleanup. This screen also surfaces Apple’s own recommendations, such as offloading unused apps, which we cover below. Social apps are usually the biggest offenders, since feeds full of photos and videos get cached aggressively, and if you are trying to cut back on phone habits overall, our guide on how to reduce screen time before bed pairs well with a storage cleanup.

Method 1: Clear Safari Cache, History, and Website Data

Safari is typically the biggest cache hog on an iPhone, since it stores website data, cookies, and cached images to speed up browsing. Clearing it takes seconds.

1. Open the Settings app.
2. On iOS 18 and later, scroll down and tap Apps, then tap Safari in the alphabetical list (you can also type “Safari” in the search field at the top). On iOS 17 and earlier, Safari appears directly in the main Settings list.
3. Scroll down to the “History and Website Data” section and tap Clear History and Website Data.
4. Choose a timeframe: the last hour, today, or All History for a complete clean.
5. Tap Clear History to confirm.

What this deletes: browsing history, cookies, and cached images and files for the selected period. Two things to know before you tap confirm. First, you will be signed out of most websites, so make sure you know your important passwords or have them saved in a password manager (check Settings, then Passwords, beforehand). Second, your bookmarks and Reading List are not affected, and on devices signed into the same iCloud account with Safari syncing, the cleared history syncs across them too.

Method 2: Clear Safari Website Data Only (Keep Your History)

If you want to free up space without wiping your browsing history, there is a more targeted option.

1. Go to Settings, then Apps, then Safari (or Settings, then Safari, on older iOS).
2. Scroll to the bottom and tap Advanced, then tap Website Data. You will see how much data each website has stored, which is useful for spotting the worst offenders.
3. To clear everything, tap Remove All Website Data at the bottom. To clear a single site, swipe left on it and tap Delete.

This is a good middle ground: your history stays intact, but the stored files taking up space are gone. Websites simply reload their files fresh the next time you visit, so the first visit afterward may load slightly slower.

Method 3: Clear Chrome Cache on iPhone

If Chrome is your main browser, its cache lives inside the Chrome app, not in the Settings app.

1. Open the Chrome app on your iPhone.
2. Tap the three-dot menu in the bottom-right corner.
3. Tap Delete browsing data (in some versions this sits under History, then Clear Browsing Data).
4. Set the Time range to All Time for a full clear, or pick a shorter range.
5. Make sure Cached images and files is checked. You can also check Cookies, site data and Browsing history for a deeper clean.
6. Tap Delete data to confirm.

Clearing cookies signs you out of websites in Chrome, so have your logins handy. If you use Firefox, Brave, or another browser, look for similarly labeled options like Privacy, Data Management, or Clear Browsing Data in the app’s own settings menu.

Method 4: Clear Cache for Individual Apps

Unlike Android, iOS does not give every app a universal “clear cache” button. How you clear an app’s cache depends on the app:

• Apps with their own cache setting: Some apps include a clear-cache option in their settings. TikTok, for example, offers one under its in-app settings, which is handy since short-video apps cache a lot of data. If you use TikTok heavily, you might also like our guide on how to get verified on TikTok in 2026 for making the most of the app once it is running smoothly again.
• Apps without one: Many popular apps, including Instagram, offer no in-app cache clearing on iPhone. For these, your options are offloading or reinstalling (see the next method).
• Check the app’s entry in Settings: Go to Settings, scroll to the Apps section, and tap the app’s name. A few apps, like Slack, expose storage or cache options here, so it is worth a look before resorting to deletion.

A practical approach: sort your apps by size in Settings, then General, then iPhone Storage, and work through the biggest Documents & Data numbers first. Clearing the cache of your top two or three storage hogs often recovers gigabytes.

Method 5: Offload or Delete Apps to Reclaim Space

When an app offers no cache button and its stored data keeps growing, offloading or reinstalling is the reliable fallback.

1. Go to Settings, then General, then iPhone Storage.
2. Tap the app you want to clean up.
3. Choose Offload App to remove the app itself while keeping its documents and data, or Delete App to remove everything, then reinstall it fresh from the App Store. A fresh install starts with zero cache.

Offloading is the gentler option: your files and settings stay, and reinstalling the app later restores them. Deleting and reinstalling wipes the slate completely, which is the closest thing iPhone has to a “clear app cache” button for stubborn apps. Before deleting anything, make sure anything important is backed up or synced, especially for apps like Instagram where drafts live on the device. If you are thinking of leaving the platform entirely instead, see our walkthrough on how to delete an Instagram account permanently.

Method 6: Restart Your iPhone to Clear Temporary System Files

iOS does not expose a “system cache” button either, but restarting the phone flushes temporary system files and can resolve sluggishness after everything else is done.

1. On iPhones with Face ID, press and hold the side button and either volume button until the power-off slider appears. On models with a Home button, just hold the side button.
2. Drag the slide to power off slider and wait about 30 seconds.
3. Hold the side button until the Apple logo appears.

This will not delete any of your data. It simply gives iOS a clean start, which clears out temporary files the system no longer needs. If your phone still feels slow after a cache cleanup and a restart, the issue may be an aging battery or nearly full storage rather than cache, in which case freeing up more space or checking battery health is the next step.

Bonus: Reset the Keyboard Dictionary

One often-overlooked cache is the keyboard’s learned-word dictionary, which can grow stale and cause odd autocorrect suggestions. To reset it, go to Settings, then General, then Transfer or Reset iPhone, then Reset, and tap Reset Keyboard Dictionary. This only clears learned words, not your texts or settings.

Frequently Asked Questions

Will clearing cache on my iPhone delete my photos or messages?

No. Clearing Safari website data or an app’s cache removes temporary files, cookies, and browsing history, not your photos, messages, contacts, or files. The one exception is deleting an app entirely without a backup, which can remove app-specific data like unsynced drafts, so back up anything important first.

Does clearing cache make my iPhone faster?

It can help if the phone is nearly full or an app is misbehaving because of corrupted cached data. Cache exists to speed things up, though, so clearing it means websites and apps reload their data fresh afterward, which can feel briefly slower. Think of it as maintenance, not a magic speed boost.

How often should I clear cache on iPhone?

There is no fixed schedule. A reasonable habit is checking iPhone Storage every few months and clearing the biggest offenders when space gets tight, plus clearing Safari data if websites start loading oddly. If storage warnings appear, that is your cue.

Why is the Clear History and Website Data button grayed out?

This usually means there is no history to clear yet, or Screen Time restrictions limit website changes. Check Settings, then Screen Time, then Content & Privacy Restrictions if a family organizer set limits on the device.

Will clearing Safari data sign me out of everything?

It signs you out of websites in Safari, yes. It does not sign you out of apps (Instagram, banking apps, and so on keep their own logins). Saved passwords in iCloud Keychain and your bookmarks stay put.

Is there a “clear all cache” button on iPhone?

No. Unlike some Android phones, iOS has no single button that wipes every app’s cache at once. You clear Safari through the Settings app, other browsers inside their own apps, and individual apps through their settings, offloading, or reinstalling.

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• DigitalGeekSpot – practical how-to guides for everyday tech

The Verdict

Clearing cache on iPhone is less a single trick and more a short routine: wipe Safari’s history and website data through Settings, clear Chrome or your other browsers inside their own apps, then hunt down storage hogs in iPhone Storage and offload or reinstall the worst ones. Finish with a restart to flush temporary system files. The whole process takes about ten minutes and can recover gigabytes of space while fixing misbehaving websites and apps. Just remember that clearing cookies signs you out of websites, so keep your passwords handy before you start. For more plain-English iPhone and tech maintenance guides, visit DigitalGeekSpot.