@fraggle I've been aware of this for a while, eBay is full of cheap lightning-3.5mm adaptors that mention requiring Bluetooth to be on. What's weird to me is the author of the post blames the manufacturers and wants Apple to crack down - when this fundamentally Apple's fault for removing a simple, standard audio interface that doesn't require expensive Apple-approved chips from their phone. You should just be able to plug any old headphones into a phone! That's how it used to work!