Why is it so slow uploadfile

Thanks for your answer Gregory.

We tried to do that but had some problems compiling. We handle to make it work on device but not on simulator.

Any suggestion or consideration?

Thanks, again.

Unfortunately we don't have specific documentation for resources for doing so Gerardo, but if I recall correctly from the last time I did it, you need to remove all of the files with filenames that refer to OS X (assuming it's an iOS app), and add -fno-objc-arc to the SDK files, if your project uses ARC. There was a thread here where I posted about this: https://www.dropboxforum.com/hc/en-us/community/posts/204367256-Anyone-have-a-way-to-use-Dropbox-with-ios9-and-watch-app-