You phone can only figure out if it’s connected to a known device (your car, your speaker, etc) by asking the data pins. A charge-only mode would “break” usability of the USB port for most users.
android 11 asks me if i want to charge only or also allow data transfer. Is it that we can't trust android to be not be hacked just by checking if data pins exist?
My phone asks me if I am connected to a trusted device and want to share data, asking me rather than asking the device if it is trusted seems to be an effective model.
