If your iPhone feels slow, apps are glitching, or your storage is mysteriously full, clearing the cache can often fix the problem. While iOS doesn’t offer a single “clear all cache” button, there are several simple ways to free up space and improve performance.
Cache is temporary data stored by apps and websites to help them load faster. Over time, this data can build up and take unnecessary space, sometimes causing performance issues, making your device run really slow and laggy.
If you use Safari, clearing its cache is quick and effective:
Open Settings
Scroll down and tap Safari
Tap Clear History and Website Data
Confirm your choice
This removes browsing history, cookies, and cached files.
Unlike Android, iPhones don’t always let you manually clear cache for individual apps. Instead:
Go to Settings
Tap General
Select iPhone Storage
Tap an app
Choose Offload App
This keeps your data but removes the app and its cache.
Tap and hold the app icon
Select Remove App
Tap Delete App
Reinstall it from the App Store
This completely clears cached data.
Some apps (like browsers or social media apps) include built-in cache clearing options:
Open the app
Go to Settings within the app
Look for options like Clear Cache or Storage
Not all apps offer this, but it’s worth checking.
A simple restart can clear temporary system cache:
Press and hold the power button (and volume button on newer models)
Slide to power off
Turn your iPhone back on
You can enable automatic offloading:
Go to Settings
Tap App Store
Toggle on Offload Unused Apps
This helps keep your storage optimized without manual effort.
Consider clearing cache if:
Your iPhone is running slow
Apps crash or freeze
Storage is nearly full
Websites aren’t loading correctly
While iPhones manage cache efficiently in the background, occasional manual cleanup can improve performance and free up space. With these methods, you can keep your device running smoothly without much effort.
Keeping your iPhone clutter-free is one of the easiest ways to maintain speed and reliability with no technical expertise required.

Drop in to see us for device repairs or general advice seven days a week at 14 Home Street, Edinburgh EH3 9LY or give us a call on 0131 221 1117
We’re always here to help. Hex repair specialists are high-performing and trusted experts in the field of iPhone and other technology repairs. We only use genuine or highest quality replacement parts and always do everything that we possibly can to repair and restore your device, something many other repair centres can’t do or just prefer to sell you a new device.
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