1. Open the selected file on the COROS app
2. Choose the arrow in the upper right-hand corner, then select "Export Data"
3. Choose ".FIT" file, then use email, AirDrop, etc. to send the file from your phone to a computer
4. Log in to the 3rd party application (using Strava as an example) on desktop, select "Upload Activity"
5. Choose "File" do upload the ".FIT" file from the COROS app to upload