Most people don't know this but Airplane Mode on apple devices DOES NOT necessarily turn off WiFi and Bluetooth

What's even more interesting is that switching them off through Control Center doesn't fully disable the radios either

It just disconnects them temporarily.

And for some reason Apple decided those disconnections should expire at 5 AM .. weird!

So your iPhone could reconnect to WiFi in the middle of your sleep without you doing anything

I wonder how many people actually know this