3.5 Audio jacks are standard, just like the USB charging cable is a standard. Not using 3.5 audio jacks, leads to tremendous amounts of industrial waste in the

3.5 Audio jacks are standard, just like the USB charging cable is a standard. Not using 3.5 audio jacks, leads to tremendous amounts of industrial waste in the form of old head phones with proprietary connectors. I think it would be better if cellphones had both 3.5mm jacks and Bluetooth.