I'm trying to implement notifications in React-Native app. My notifications are pretty similar to WhatsApp call. No matter the app is open or closed, your phone is locked or not, it shows the notification that someone is calling. I searched about it a lot and it's been days scratching my head. If Any can give me a direction, that will be helpful.
I have been using FCM, it shows badge notification but can't show a custom modal or anything.