How to backup contacts and calendar from Apple iPhone 6 Plus

We used PhoneCopy.com service for this guideline. Using it, your can backup your contacts from your Apple iPhone 6 Plus easily. The whole backup, including the settings, can be done in several 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:
PhoneCopy also supports syncing notes, calendar events, and SMS messages on many devices, not just contacts. Check the PhoneCopy website to see the full list of supported data types for your phone.