My iPhone duplicated my contacts?

I have an iPhone 4S for Verizon and I just upgraded to iOS6 yesterday. Today I went to back up my contacts and it backed then up as usually, but also duplicated every single one if my contacts. How can I fix this without individually deleting each duplicate?

Go into your settings, and go under "mail, contacts, Calendar" and look at account. Do you have more than one of the same iCloud account? If so that is the reason. Delete the duplicate one.

Now you look like you have more friends!

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