How can I unlink my contacts all at once?

[iMore Question]

How can i unlink my contact all at once

After I backed up my iPhone4 from my laptop, I clicked sync on the right of the coloured band at the bottom of the window. All my contacts now show as linked on my phone.

How can I unlink all my contacts, at the same time?

Thanks in advance!

 

[pkcable]

I don't believe that you can.