How to backup contacts, calendar and tasks from Nokia Lumia 625

Losing your contacts can be frustrating. This guide shows you how to use PhoneCopy.com to keep a safe backup of all data from your Nokia Lumia 625 — it only takes a few 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 Phone 8.1, it is necessary to delete all contacts there first.
From now on, your contacts are protected. If anything happens to your Nokia Lumia 625, simply log into PhoneCopy to access or restore your data instantly.
Some additional tips:
Contacts can be then transferred to another device (eq. iPhone, Nokia, SonyEricsson, Samsung, LG etc). See PhoneCopy site for supported devices.