Note this is only for three customers.
If you are on three you can backup your contacts with three so you will never loose them, so if you are going to change phones you can easily get the contacts via the sync function of your mobile phone. Or if you loose your phone you won't loose your contacts.
Follow the link and see if there are instructions for your phone.
<a href="http://www.three.com.au/cs/ContentServer?pagename=Three%2FPage%2FIFramePageTemplate&cid=1167987102922&c=Page&p=&homeId=" target="_blank">Sync Setup Instructions </a>
Never loose your contacts again
