title: register for push notifications not working for some Device
body: <p>Hi i am facing strange issue Regarding Push notifications that not Appear popup/alert telling me to accept push notifications isn't displayed for some device and some device its working fine. I am not understand where is mistake in my code. i am also trying re-generate my Provisioning Profile after I enabled Push Notifications for the certificate. can any one please guide me how to solve this issue. </p>
  
  <p><strong>HERE IS MY CODE FOR PUSH NOTIFICATION:-</strong></p>
  
  <pre><code>- (void)application:(UIApplication*)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData*)deviceToken
      {
          NSLog(@"My token is: %@", deviceToken);
      }
  
      - (void)application:(UIApplication*)application didFailToRegisterForRemoteNotificationsWithError:(NSError*)error
      {
          NSLog(@"Failed to get token, error: %@", error);
      }
  
      - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
      {
          self.window.rootViewController = self.viewController;
          [self.window makeKeyAndVisible];
  
          // Let the device know we want to receive push notifications
          [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
              (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
  
          return YES;
      }
  </code></pre>
  
  <p>I am using above code for some device all working fine. but some are not reserving at-list registration popup/alert. whats probability for this type of issue?
  please Help me.</p>