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Tip: save some space on your iPhone by flushing Dropbox caches
Low on storage, you say? If you're a heavy Dropbox user who's running out of storage space on their device, clearing the app's cache should be first order of business. The mobile app keeps a cache of files for efficiency and emergency purposes, aside from doubling as a staging area for downloading and uploading. Flushing the cache should help free up some storage space on your iOS device. Doing so is likely to cause files to load longer, but none of the offline items will be affected. If you'd like to free up some storage space on your iPhone, iPad or iPod touch, follow the steps outlined in this tutorial to clear the Dropbox cache with just a few taps. Unfortunately, the Dropbox app does not provide the option to set a limit on cache size, meaning it'll use as much free storage space as iOS's automatic storage management lets it. iOS 10 does manage app caches, temporary files and other cruft on your device, deleting items automatically, as needed, to free up space. However, that feature lacks a user-facing interface that would let you adjust how it worked or set a custom size for the Dropbox cache. This is why you're advised to always use storage management features in your favorite apps. Dropbox's cache-clearing option requires version 38.2 or later of the mobile app.
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