title: iOS periodic background location updates which depends not only on significant location change
body: <p>I have an app which must report user location even if it backgrounded or even killed (terminated). The issue is that the app should report the location not rare than 1 hour interval. </p>
  
  <p>I'm using significant location change (SLC) to track all movements which is quite enough when user is on the go but once user stops no further updates is raised and the app has no opportunity to submit new location (while user stays in the same area but without SLC).</p>
  
  <p>To cover this case I start to use Background fetches to periodically send updates location in background even without SLC). The issue here is that background fetches used to work quite often (every 20-30 min since I used then in another iOS 7.x app) but now with iOS8 / iOS9 I can get it only once a day or so which is not acceptable in my case. I have executed ton of tests, developed simple background fetch app which add a local notification on fetch. No luck to force it to work more often.</p>
  
  <p>Here is my AppDelegate:</p>
  
  <pre><code>- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      [[UIApplication sharedApplication] setMinimumBackgroundFetchInterval:UIApplicationBackgroundFetchIntervalMinimum];
      [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
      return YES;
  }
  
  - (void)application:(UIApplication *)application performFetchWithCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
  {    
      [[UIApplication sharedApplication] cancelAllLocalNotifications];
      UILocalNotification *localNotification = [[UILocalNotification alloc] init];
      NSDate *now = [NSDate date];
      localNotification.fireDate = now;
      localNotification.alertBody = [NSString stringWithFormat:@"Background fetch!"];
      localNotification.soundName = UILocalNotificationDefaultSoundName;
      NSInteger number = [UIApplication sharedApplication].applicationIconBadgeNumber;
      number++;
      localNotification.applicationIconBadgeNumber = number;
      [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
  
      completionHandler(UIBackgroundFetchResultNewData);
  }
  </code></pre>
  
  <p>All what is done here is to add local notification on every background fetch. I always finalize the background execution with UIBackgroundFetchResultNewData.</p>
  
  <p>Do you have any suggestions on how to force background fetches to work more often (or prove links that it is not possible any more)?
  Any alternative solutions to meet my requirement are also welcomed! </p>