How to backup contacts, calendar and tasks from DELL Venue

In our guideline we will introduce PhoneCopy.com service which supports many phones from almost all manufacturers, including DELL Venue, 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 7, it is necessary to delete all contacts there first.
Your backup is now complete. Visit the PhoneCopy website to confirm that all your contacts were transferred correctly and to explore the other features your account offers.
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.