It's always been like this for chat applications; the API being discussed is for VOIP calls. For chat apps, you use push notifications to alert users and wake

It's always been like this for chat applications; the API being discussed is for VOIP calls. For chat apps, you use push notifications to alert users and wake up the app, that can do its own downloading through its own protocol. You don't need to use pushes to actually deliver content unless it's relevant to show to the users