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I’ve made a simple push notification app, sending the notification to the app, using Onesignal and Firebase,
Is it possible to make an app, which sends the notification, from one phone to the other ? using Onesignal or Firebase, but which do not need to send the message via the website of the above mentioned tools,
Example a messaging app, I push an android phone, the other device gets the push, and vice versa...
Somebody help me ?