This connector can be also be used with certain other types of accessories ... and is now the more common size on phones. See: Headphone Jack (3.5mm) 2.5mm connectors are still common for TTY ...

Of course, it’s not only the headphones that will be more expensive – the USB connector and cables will too. Going from a simple 3-pin jack to the 24-pin behemoth that is USB Type-C will ...