Then that's basically what I said right? That there is in practice no way to opt out of using Firebase if you want consistent notifications.
Not clear what your point is. The Signal server wakes up the app via an empty message. At most the info this conveys is that a Signal app got a message to pull.
Not clear what your point is. The Signal server wakes up the app via an empty message. At most the info this conveys is that a Signal app got a message to pull.