How to backup contacts and calendar from Apple iPhone 3G

We used PhoneCopy.com service for this guideline. Using it, your can backup your contacts from your Apple iPhone 3G 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!

With your contacts safely backed up, you can rest easy knowing your data is secure. Log into your PhoneCopy account at any time to view, edit, or restore your contacts.
Some additional tips:
PhoneCopy keeps a detailed sync history for your account. If you accidentally delete a contact, you can recover it from an earlier backup without losing any other data.