The Dropbox iOS app does not use your device's location data. However, the app will ask for location permission if you choose to enable background uploads for the camera uploads feature.
If you turn on the background uploading option in the Camera Upload settings, the app will ask for permission to access your device's location services. This will enable the app to finish large uploads without the need for you to open the app.
Normally, photos and videos can upload while the Dropbox app is open, and for a few minutes after the app is closed. But with background uploading turned on, the app will automatically resume unfinished uploads when it detects a significant change in your device's location. This feature is designed to make the Camera Upload feature work more efficiently and does not collect your location information.
- Important note: For very large files—or large numbers of small files—the Dropbox app won't continue uploading photos if the app is in the background for longer than five minutes. This is true even with background uploads turned on.
When the background uploading option is set to On, you'll see the location services arrow appear at the top of the screen. This icon usually means that an app (such as a mapping app) is using your device's GPS system (if applicable) to keep track of your precise location—and using a lot of battery in the process.
However, Dropbox's background uploading feature uses a low-power version of Apple's location services. If you have a big backlog of photos to upload, you may notice that the app uses some power. But once that's done, uploading new photos should have little effect on battery life.
Understanding iOS Location Services
For information such as how to tell when an app is using location services, steps to reset or change your location settings, and to learn more about iOS location services, see Apple's Understanding Location Services support article.
Apple's API reference
For iOS developers or highly technical readers, check out Apple's Developer documentation to learn more about the API library Dropbox uses to access iPhone and iPad photo galleries.