I know this question has been asked repeatedly in the forums over the years, but since most of the threads are at best a year old, dating all the way back to 2017, and there's no official FAQ response, I wanted to confirm what the latest status is for the question.
Does the Dropbox iOS app automatically upload full resolution photos when the iCloud "Optimize iPhone Storage" setting is on? Or does it upload the local low resolution photo on the device?
The most common answer I've heard implies that the Dropbox app would "connect to iCloud servers" to download the full resolution image first before uploading to the Dropbox app. I'm not sure if that's something Apple makes available to third party apps accessing the camera roll, but I wanted to confirm if I can interpret this to mean that yes, it fetches the full resolution photos from iCloud every time if it's not on the device already.
Hey there @chimerical, thanks for posting on our Community and happy Monday!
Please note that if you have iCloud Photo Library enabled, and have its "Optimize iPhone Storage" setting enabled, it will save your full-resolution files in iCloud and store "optimized" versions on your phone.
Since the full-resolution images are stored in iCloud, the "camera uploads" feature needs to connect to the iCloud servers to upload each full-resolution image to Dropbox. This can be a slow process that depends on the strength of the connection to the iCloud servers.
Thanks Walter! I don't mind too much if it's slower, since it's understandable why. But I was just looking to check that it's never going to try to upload the optimized version to Dropbox, and it sounds like you're confirming that won't happen (which is great).