How to Clean Android Junk Files and Free Up Storage Space

When Android smartphone users encounter storage full warnings, gigabytes of space can be recovered using native system tools without installing third-party junk-cleaning applications, which often come with excessive ads and permissions. The most effective way to reclaim substantial storage is by backing up photos and videos to the cloud.

If automatic backup is enabled in Google Photos, users can utilize the Free up space on this device command to delete original local files while keeping them accessible in the cloud. However, Google notes that photos and videos younger than 30 days may still be retained on the device even after backup, which is why some users get less space back than expected.

Another frequently overlooked area is the trash bin. Photos deleted through the local gallery app continue to consume device storage until the trash is manually emptied. Meanwhile, files already backed up to Google Photos and deleted through the app move to Google account storage instead of device storage, meaning cloud trash clearing only helps with cloud quotas rather than internal phone storage.

For users wanting an overview before clearing files, the starting point is the Settings menu under Storage, which displays a category breakdown of space usage including images, videos, audio, documents, and applications to identify what consumes the most space.

On Pixel devices and Pure Android smartphones, this storage page includes a direct shortcut to the Clean feature within the Files by Google app, the primary tool recommended by Google. The Clean tab organizes deletable items into category cards ranging from app cache, temporary files, duplicates, large files, old screenshots, to long-unused apps.

Stock photo for illustration only, not from the actual event

It is important to understand that files deleted through these category cards are moved to the trash bin and continue consuming space for another 30 days, requiring manual trash clearing to actually recover the storage. Conversely, files categorized under Junk files are permanently deleted immediately without entering the trash. For Samsung smartphone users, the path differs slightly by navigating to Settings, selecting Device care (or Battery and device care depending on the One UI version), and choosing Storage to review recommendations for deleting duplicate files, large items, and unused apps.

Android devices lacking a unified cache clearing button require manual clearance per app through Settings by selecting Apps, choosing the specific application, opening Storage and cache, and tapping Clear cache. This removes only temporary data without affecting user information, unlike Clear data or Clear storage which resets the app as if freshly installed and logs the user out, and should thus be avoided unless intentional.

Interestingly, chat and social media applications typically accumulate the most cache and attachments, especially from auto-downloaded media in group chats. Users can directly clear cache and media files within chat app settings and disable automatic media downloads to prevent files from piling up again. Nevertheless, users should avoid third-party junk cleaner and speed booster apps advertising increased storage and performance, as basic cache cleaning is handled natively by the Android operating system, while RAM boosters often fail to deliver promised results because Android manages background memory automatically, making aggressive background app termination force reloads and increase battery consumption instead.

Source: Thairath Lifestyle