<span ng-if="$ctrl.phoneNumber">
    {{$ctrl.phoneNumber}}
    <a href="tel:{{$ctrl.phoneNumber}}">
        <vn-icon
            flat
            round
            icon="phone"
            ng-click="$event.stopPropagation();"
        >
        </vn-icon>
    </a>
</span>
<span ng-if="!$ctrl.phoneNumber">-</span>