How to backup contacts and calendar from Apple iPad Pro 10,5" 2nd gen

PhoneCopy.com is a web service which is free for personal purposes (with few limitations). This tutorial will show you how to backup your data from Apple iPad Pro 10,5" 2nd gen. The whole process can be completed in few minutes.
Register
Run the app and create new account.
PERMISSIONS
Then you need to allow PhoneCopy access to your contact list and select contacts which will be synchronized
You can synchronize photos and videos too. Please note that the authorization of photos or videos is not required. If you will not grant it, PhoneCopy will only synchronize your contacts.
Let's synchronize!

That is all there is to it. Your contacts are now backed up on PhoneCopy and you can access them from any browser whenever you need them.
Some additional tips:
The free PhoneCopy plan allows you to store up to 500 contacts, which is more than enough for most users. A premium plan is available if you need to sync more data or use advanced features.