Windows Phone
- in the Cloud: https://www.windowsphone.com/de-de/how-to/wp8/settings-and-personalization/back-up-my-stuff
- offline Windows Phone 7: with the WP7 Easy Backup app
- offline Windows Phone 8: answers.microsoft.com/en-us/windows/forum/all/windows-phone-881-to-windows-10-offline-method/90c1a59d-5e09-4dd7-b500-044ba1f289af
Blackberry
Because the Blackberry support websites are frequently revised, the links become quickly outdated. For this reason we have to ask that you research this topic on your own: Blackberry Support
You can streamline your search by knowing the exact model and operating system version. Help is available at: de.blackberry.com/support/identify.html