Learn when to clear cache vs. app data, the exact steps on Android (12–15), and safer options for system apps — fix glitches, free up space, and reset misbehaving apps.
Quick take:
Clear cache (safe, no sign-in loss): Settings → Apps → [App] → Storage & cache → Clear cache.
Clear storage / Clear app data (full reset of the app): Settings → Apps → [App] → Storage & cache → Clear storage → OK.
Cache vs. App Data — What’s the difference?
Cache: Temporary files that help apps load faster (images, thumbnails, etc.). Deleting cache doesn’t remove logins or personal content.
App data (“storage”): The app’s saved info (accounts, settings, databases, offline content). Clearing app data resets the app to its initial state, similar to a fresh install — you’ll likely need to sign in again and reconfigure your settings.
Step-by-step (Stock Android / Pixel)
Open Settings → Apps → See all apps and select the problem app.
Tap Storage & cache.
Tap 'Clear cache' first and then test the app.
If issues persist, tap Clear storage (also labeled Clear app data) and confirm with OK.
Tip: Before clearing anything, try Force stop (on the app’s info screen), then reopen the app. If the issue persists, proceed with clearing cache, then data.
When to use each option
Use Clear cache for: slow loading, broken image feeds, temporary glitches, “app feels heavy.”
Use Clear storage for: repeated crashes, corrupted data, stuck login state, settings that won’t stick — and you’re okay with re-signing in.
Brand-specific notes
Samsung (One UI): Path names can vary slightly, but you’ll still find Clear cache and Clear data under Settings → Apps → [App] → Storage.
Xiaomi / HyperOS (and recent MIUI): Similar flow under Settings → Apps → Manage apps → [App] → Storage.
Special cases & safer choices
Google Play services (and other core services): Prefer Clear cache. Avoid clearing app data unless a trusted guide specifically instructs you to do so.
Browsers (e.g., Chrome): Many offer in-app controls like Settings → Storage → Manage storage / Clear browsing data to remove site data, cached files, and downloads more precisely.
Low storage? Check Settings → Storage → Apps (or Storage → App storage) to sort by size and target the biggest space hogs first.
Troubleshooting checklist
App still misbehaving after Clear cache? Try Force stop, then Clear storage.
Is the button greyed out? Reboot, ensure that no work/parental policies are blocking changes, and verify that the app isn’t updating in the background.
Problems return quickly? Update the app and Android system components from the Play Store; outdated builds often re-trigger cache/data issues.
FAQs
Does clearing the cache or data delete my photos or messages?
Clearing cache — no. Clearing app data only affects the data for that specific app. It won’t delete your phone’s gallery or SMS, but it may remove that app’s downloaded/offline content.
Do I need to restart my phone afterward?
Not required, but a quick restart can help resolve stubborn issues after a data reset.
Can I clear the cache for all apps at once?
Modern Android doesn’t offer a single “clear cache for all apps” button. Use Storage → Apps to review large apps and clear the cache for each app.
What’s the safest order for fixing problems?
Force stop → Clear cache → Update app → Clear storage (if needed) → Reinstall (last resort).
