How to backup contacts, calendar and tasks from Freetel Katana 01

We used PhoneCopy.com service for this guideline. Using it, your can backup your contacts from your Freetel Katana 01 easily. The whole backup, including the settings, can be done in several minutes.
Download the PhoneCopy application from windowsphone.com. If you do not have a PhoneCopy account yet, press "Register new account" and create it by filling in "Registration" and then press "Sign up".
If you already have a PhoneCopy account, fill in your username and password. To export your contacts, press "Export to PhoneCopy.com". If you want to upload your merged contacts back to the same Windows 10 Phone, it is necessary to delete all contacts there first.
Your data is now safe on PhoneCopy. The service stores a full copy of your contacts online, so you can access them from any device or restore them whenever needed.
Some additional tips:
You can set PhoneCopy to sync automatically at regular intervals, so your backup always stays up to date without you having to remember to do it manually.