Apps don't have access to device IDs other than IDFA, which can be reset at any time by the user.

> wake/sleep/network events, etc

Apps can't tell if the device has been woken up or put to sleep, apps only have access to their own application state events like didEnterForeground and didEnterBackground.

Apps can tell if the device's internet has been connected or disconnected, I didn't know that was not possible on websites.