> 1. User logged into FB or IG app. The app runs in background, and listens for incoming traffic on specific ports. I happened to be immune, I disabled Backgro

> 1. User logged into FB or IG app. The app runs in background, and listens for incoming traffic on specific ports. I happened to be immune, I disabled Background App Refresh in iOS settings. All app notifications still work, except WhatsApp :( https://forums.macrumors.com/threads/any-reason-to-use-background-app-refresh.2399867/ https://forums.macrumors.com/threads/any-reason-to-use-backg...