Something similar can be done with USB.<p>If you look at the USB type C connector specification, you&#x27;ll notice that it already defines one alternate mode in its single appendix: a headphone alternate mode. That is, with the correct hardware in the phone, and a passive USB-C to 3.5mm jack adapter (also described in that appendix), new phones from other manufacturers which use the type C connector would be able to follow Apple&#x27;s lead and drop the headphone jack. (And in case you were wondering, that alternate mode can charge at 500mA and connect to the headphone jack at the same time in a single USB-C connection.)