You can buy a small Bluetooth/3.5mm adapter. I have one for my amp when I want to play music through it. It also works with earphones. It's about the size of a credit card but obviously thicker.
So last Christmas we (another mutual friend and I) got back in touch with someone we hadn't spoken to for almost a decade, met up in the Pub and it was like it'd only been a couple of months.
Instant reconnect.
Might be another ten years before we meet again because since then almost no interaction.
So say we all.