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To clear one app’s cache on a Samsung Galaxy A51, open Settings > Apps, select the app, tap Storage, then tap Clear cache. This removes that app’s temporary data; it does not clear the phone’s photos or downloads, and it is different from resetting the app.
Clear the cache for one app on your Galaxy A51
- Open Settings.
- Tap Apps.
- Select the app whose cache you want to remove.
- Tap Storage.
- Tap Clear cache.
The steps use the app’s own information screen. If your menus use slightly different labels, look for the selected app’s storage controls in Settings. Samsung notes that menu paths and available options can vary by device and software version.
What clearing cache does—and what it does not do
An app cache consists of temporary data. Removing it can be useful when troubleshooting an app or clearing temporary files, but the amount of space recovered depends on the app and its current cache. There is no guaranteed storage gain or performance improvement. Google notes that some apps may be slower the next time they open after their temporary data is removed.
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Clear cache is not the same as Clear data or Clear storage. Google describes clearing storage as permanently deleting all app data, while Samsung says clearing app data resets the app to its factory defaults. Pause before selecting either data-reset option. If you intend to reset an app, check its backup or sync options first; Google also advises trying to delete data from within the app before clearing its storage.
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Choose the cleanup action that matches your goal
| Action | What it affects | Use it for |
|---|---|---|
| Clear cache for an app | That app’s temporary data | App troubleshooting or removing temporary files |
| Clear data or storage for an app | The app’s stored data; Samsung describes Clear data as resetting the app to factory defaults | Resetting an app, after considering its backup or sync options |
| Review files in Storage | Files you select, such as images, videos, audio, or documents | Freeing space used by personal files |
| Clean memory | Background apps, which are closed to free memory | Managing phone memory rather than permanently reclaiming file storage |
Free up storage used by photos, videos, and downloads
If personal files are taking up space, clearing an app cache is the wrong control. Samsung’s general route is Settings > Device care > Storage. Review a category such as Images, Videos, Audio files, or Documents, then choose the files you want to delete. Review them individually rather than deleting everything automatically. Menu names and options can vary.
If media is the main storage concern, Samsung also provides instructions for moving music, images, videos, and other media to an SD card. That moves personal files; it does not clear an app’s cache. Check compatibility for your particular Galaxy A51 variant before choosing a card. Samsung’s instructions for moving media to an SD card.
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Free background memory instead
For background memory cleanup, Samsung’s support instructions give the route Settings > Device care > Memory > Clean now. This closes background apps to free memory. It is separate from clearing an app’s cache and does not permanently reclaim storage occupied by photos, downloads, or other files.
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Samsung’s general Galaxy guidance uses Battery and device care in some instructions, while older devices may show Device care. AT&T’s Galaxy A51 support page also places memory management under Battery and device care. These labels describe broader maintenance features; the app-cache steps begin at Settings > Apps. Your exact screens can depend on the device’s software, carrier, and region.
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Sources: Google Android Help: Clear up space; Samsung US: Free up storage space on your Samsung phone or tablet; Samsung UK: How to clear cache on your Samsung phone (updated June 5, 2026); AT&T: Samsung Galaxy A51 device memory management.
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