title: ng-mousedown and ng-mouseup not working in mobile phone
body: <p>I need to use ng-mousedown and ng-mouseup in my ionic project for mobile.
  when the user will click an icon and keep it pressed ng-mousedown should change the icon with another and on  ng-mouseup it should take user to next page.
  Everything is working fine in browser but not in Mobile phone (iPhone 6).</p>