Quick Answer
Open Settings, tap Apps, choose the app, tap Storage, then tap Clear cache. That removes the temporary files without touching your logins or saved data. Repeat for any app that is slow, frozen, or hogging space.
For a phone wide cleanup, open your browser, clear the browsing cache for All time, then restart the device. Android no longer ships a one tap clear all caches button, so you clear per app and let the OS handle the rest at next reboot.
Clear cache is always safe. Clear data wipes your settings and logs you out, so only use it as a last resort for a misbehaving app.
App cache vs app data: the critical difference
App cache is temporary scratch files: image thumbnails, scripts, preview frames, partial downloads. Clearing it frees space and forces the app to rebuild the cache from scratch. The first launch after clearing may take an extra second, but nothing is lost.
App data is your personal layer: account credentials, settings, draft messages, offline content. Tapping Clear data wipes the app back to factory state. You will be logged out, themes will reset, and any unsynced offline content vanishes. Treat the Clear data button like a hard reset, not a cleanup.
Clear cache on Samsung Galaxy (One UI)
- Open Settings and scroll to Apps.
- Use the search bar at the top or scroll alphabetically to find the app.
- Tap the app name, then tap Storage.
- Tap Clear cache in the bottom right corner.
One UI also lets you sort apps by size. In the Apps list, tap the three dot menu, choose Sort by size, and target the largest offenders first. Social, video, and map apps usually dominate.
Clear cache on Google Pixel and stock Android
- Open Settings and tap Apps, then See all apps.
- Select your target app.
- Tap Storage and cache.
- Tap Clear cache.
Pixel and other stock Android devices (Motorola, Nokia, ASUS) follow the same path. The labels are identical because they are inherited directly from AOSP.
Clear cache on OnePlus and Xiaomi
OnePlus (OxygenOS) and Xiaomi (HyperOS / MIUI) use slightly different wording but the same flow. Settings, Apps, App management, pick the app, Storage usage, Clear cache. On older MIUI builds the option lives under a Clear data submenu where you can pick cache only, so check both screens.
Clear browser cache in Google Chrome on Android
- Open Chrome.
- Tap the three vertical dots in the top right corner.
- Tap History, then Clear browsing data.
- Set the Time range to All time.
- Check Cached images and files. Leave Browsing history and Cookies unchecked if you want to stay logged in to your sites.
- Tap Clear data.
Other browsers follow the same pattern. In Firefox, tap the menu, Settings, Delete browsing data. In Samsung Internet, tap the menu, Settings, Personal browsing data, Delete browsing data.
Clear the system cache partition (advanced)
Modern Android no longer exposes a user facing cache partition wipe, because the OS auto manages it. If a software update is misbehaving and you have advanced experience, you can boot into Recovery Mode (power off, hold Power and Volume Up together on most phones) and select Wipe cache partition. This does not touch your data, but the option is missing on many newer devices.
How often you should actually clear cache
- Per app, as needed. Only when a specific app is misbehaving or visibly large.
- Browser cache, monthly. Especially if you visit lots of sites or stream video.
- Whole phone, never as routine maintenance. Cache exists to speed things up. Clearing it nightly is counterproductive and burns more battery rebuilding files.
When clearing cache will not fix the problem
- App still crashes after clearing cache. Try Clear data (after backing up logins), then reinstall if needed.
- Phone is still slow after clearing every app. The real bottleneck is usually full storage (under 10 percent free) or an old battery that throttles the CPU. Free up space or check battery health in Settings.
- Specific website looks broken. Clear cookies for that site only, not the whole browser cache.
FAQs
Will clearing cache delete my photos or messages?
No. Photos, videos, and messages are stored separately and are not affected by clearing app cache.
Why does WhatsApp cache get so large?
WhatsApp keeps thumbnail previews of every media file it has touched. On a heavily used account it can easily exceed 2 GB. Clearing the cache rebuilds thumbnails on demand without losing any chats.
Should I use a third party cleaner app?
No. Most cleaner apps are ad heavy, request invasive permissions, and clear cache that Android would have purged on its own. The built in settings menu does the same job safely.
Does clearing cache improve battery life?
Slightly, and only if the cache was so bloated that apps were taking longer to load. The bigger battery wins come from limiting background activity, turning off always on display, and disabling unused sync accounts.
The takeaway
Clear cache per app whenever an app is slow, bloated, or misbehaving. Leave the rest alone. Android already manages cache aggressively in the background, and routine mass clearing wastes more battery than it saves.
