Why when go to my contracts and in account setting.

[Kimbrat]

It does not show up in sync accounts. When i try to add Facebook account it is alreay highlighted. After I select Facebook account again it says at bottom of device it can only support one Facebook profile. Sometimes I sign into Facebook using my Gmail or my phone number. Does this make a difference?

 

[B. Diddy]

Welcome to Android Central! Which phone? Are you trying to sync your Facebook contacts to your phone's Contacts app? Facebook removed that functionality a long time ago. You could try using Sync.ME instead.