I would suggest using the free MIQ Live app to backup your phone! There have been far too many recent complaints of people just turning on their phone to discover that not only are their contacts not listed, their not on the phone anymore!
When you download the MIQ app it will backup all data to a private account you can access online. (select contacts, sms, calender, photos, videos, bookmarks ect.) You can store the contacts there, even import more or manually create them online to have them push to your phone immediately. This might solve the contact list problem, but will definitely ensure you don't lose any data. If you want to restore or switch phones you just download the app again and log in and all your data is back...
Hope that helps. Good luck!