I have deleted a contact by mistake
You must have permission to restore deleted contacts.  If you don't, please ask someone who does.

Go to Search menu &gt;&gt; Advanced Search.
Check the Search in Trash (deleted contacts) box.  It's near the top on the right.
Enter the name for the person in the name field if you know it, otherwise just press Search.
You should see a list of deleted contacts.  Check the box next to the deleted contact you want to restore.
From the Actions drop-down that appears above the list of names, select Restore contacts from trash.
Click Restore contact(s).