Ionic android app is very slow in accessing REST api to server when run on a real device

When i test the ionic app on a real device the REST calls are taking too much time, which actually will prompt user to close the app. But on developing stage it works fine on local browsers using command "IONIC SERVE". Same internet wify connection is using on both android phone and developing computer. A sample rest Call used is

$http.get(newsurl).success(function(data){
$scope.news=data;

})

Did anybody face similar problem.

There was an infinite scroll option in a window which was creating too many ajax requests to server. and when i moved between different tabs in the app number ajax calls was increasing, Too much ajax request are getting blocked. I just showed a loading window while processing an ajax request so that users cannot move between tabs while ajax request are processing