How to backup contacts, calendar and tasks from Nokia Lumia 638
In our guideline we will introduce PhoneCopy.com service which supports many phones from almost all manufacturers, including Nokia Lumia 638, and can be easily used to synchronize data between two or more devices.
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.
Once everything is done, check your data on the web. Login to PhoneCopy webpage and you will see brief review of all data transferred from your device. With another mouse click, you can review the change of each particular item.
Some additional tips:
Contacts can be then transferred to another device (eq. iPhone, Nokia, SonyEricsson, Samsung, LG etc). See PhoneCopy site for supported devices.