iOS doesn't update the file retrieved from the web

Hello everyone, I did an application that retrieves information from the web with the $http.get() function. The code is the same for the two platforms: Android and iOS, but the iOS version doesn’t update as the remote file is updated.

The code is this:

var eventi = [{id: 0, name: 'fetching news', data: '00/00/0000', detail: 'waiting'}];
$http.get('').success(function(data) {
     eventi = data;
}).error(function(error) {
    eventi = [{id: 0, name: 'Can't get news', data: ' ', place: ' ', content: "Some content"}];

Working fine on Android; not working on iOS.

Anyone has a fix for this?