To view a folder anywhere and anytime, make it available offline. Specifically, making a folder available offline:
Once a folder is available offline and is downloaded to your phone or tablet, you can access it any time. To access the file, tap Offline from the main menu.
You can manage your Offline settings in the Settings page of the app.
When on a cellular network (not WiFi), Dropbox tries not to use your data plan. Your folders don't update unless you tap the Update all button from the Offline screen.
To remove a folder from your Offline screen:
If you have your personal and business accounts connected, you can access all your offline folders from the same tab. From the Offline, you can view all your offline folders together or you can separate them by account.
You can manage your Offline settings in the Settings page of the app. Here’s how:
The Offline tab shows you the amount of space your offline files and folders use. To keep your files up-to-date, Dropbox updates your offline files automatically if you're on a WiFi network. Toggle the Use Cellular Data setting on to download offline files when you’re not connected to WiFi.
Dropbox checks if any changes were made to your offline folders when you open the Offline tab. If changes were made, Dropbox syncs these changes to your device.
Automatic syncing while the app is in the background is not currently supported. The only exception is when Android devices are connected to power, offline files sync in the background.
You can make up to 100 folders available offline.
A folder can't be saved for offline use if:
There are several reasons you can be a seeing a red “x” overlaid on the folder icon:
A yellow exclamation point means that a newer version of your folder is available. Tapping the refresh icon on iOS or Update all button on Android syncs these changes.
When the Dropbox app is open, any changes automatically sync to your phone. If these changes are greater than 20 MB, you can decide whether you’d like to wait for WiFi or sync the changes anyway. You can adjust these settings in the Offline section on the Settings page.
Yes. Folders that are marked to be available offline are stored locally on your device. If you have less than 500 MB of storage available, syncing automatically stops.
No, this feature is not currently supported.