Take a look at the example here: http://docs.angularjs.org/api/ng.filter:filter
You can search by any of the phone properties by using
I like to keep is simple when possible. I needed to group by International, filter on all the columns, display the count for each group and hide the group if no items existed.
Plus I did not want to add a custom filter just for something simple like this.
USA ({{fusa.length}})
{{$index + 1}}
International ({{fint.length}})
{{$index + 1}}