How to backup contacts, calendar and tasks from LG Optimus 7Q

We used PhoneCopy.com service for this guideline. Using it, your can backup your contacts from your LG Optimus 7Q 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 Phone 7, it is necessary to delete all contacts there first.
Well done — your contacts are now securely backed up in the cloud. Open your PhoneCopy account in any browser to review your data or make changes at any time.
Some additional tips:
Just as a reminder, the contacts are transferred via your mobile phone service provider, so you need to have data plan activated for the service to work. If you don't have a special data scheme, your carrier will charge you additional fees.