Whatsapp desktop knows if my phone is on
I started using whatsapp desktop and dont fully understand how it works. After the initial pairing the desktop app can send messages on my behalf. If I turn off my phone it will stop sending messages. If I then turn on my phone but run no apps, it will continue to send messages. How does this communication work? Does iOS run something in the background? Of course iOS runs platform services in the background. Push notifications, in this example. I turned off push notifications for Whatsapp and the desktop app is still able to tell if my phone is on or not Note I am using a MacBook Pro and iPhone in this situation.