(void)application:(UIApplication )application didRegisterForRemoteNotificationsWithDeviceToken:(NSData )deviceToken
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will change, it will change after uninstalling and reinstalling iOS 9.
As long as your certificate and your project bundle remain unchanged, the token you obtain will remain unchanged
This should not change, it is the unique identifier of the device
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will change, it will change after uninstalling and reinstalling iOS 9.
As long as your certificate and your project bundle remain unchanged, the token you obtain will remain unchanged
This should not change, it is the unique identifier of the device