Use training data backup if you want to change your phone to another one. You have to log in with the same Apple ID (email address) on your phone in order to use this feature.
This section indicates date for last successful training data backup.
Tap “Back up now” button to back up all saved training data, athletes, distances and devices. In order for this to work, you need internet connection. Depending on the saved amount of training sessions it can use larger amounts of internet data so connection to Wifi is recommended.
When you are in need to restore the last backup, tap “Restore last backup now” button. Wifi connection is recommended.