In the applicaiton i developed i need to send push notifications to the users in certain events that happened in application. The problem i face is push notification is not delivered to some users. For example i test the application in 50 devices then just 15 of them get the notification. when i log with php script after a device token it leaves the for loop. What can be wrong with that token ? The application is in app store by the way. Any help will be appreciated.