Question: how to transfer all photos from iphone to dropbox?
Answer: Open Dropbox on your phone.
Open the Dropbox folder where you'd like to store your photos.
Tap the + (plus) icon at the bottom of your screen.
Choose Upload Photos.
Tap the photos you would like to upload.
Tap the folder icon (Android) or Next (iOS), and select where you'd like the files to be added.