Slightly OT, but:
fechter wrote: ↑
Dec 31, 2017 6:05 pm
Most phones have an "airplane mode" that turns off all the radios.
FWIW, I have two old first generation Nooks (book reader) that Bill gave me, which even in airplane mode still goes out and check for wifi on occasion, and if it finds a wifi that doesnt' require a user to log in first, it downloads updates and installs them (interrupting you while you're reading whatever you have open) whether you want them or not (erasing all of your preferences and any books not on the SD card when it does this).
I can't see any of the wifi stuff happening, as there's zero notifications of it, but it's obvious it's doing it, as there's no other way it could've gotten updates. (it's never connected to the internet, and immediately after I powered each one on I enabled airplane mode to disable any wifi connection. Only computer they ever got connected to didn't have an internet connection at the time, and was just to upload a whole slew of books to them via USB-as-storage-device (NOT using anything other than built-in Windows drivers that auto-install), and haven't been reconnected since).