The pixel 4 comes with a usb-c port only. I bought an adapter (usb-c to dual 3.5mm jack + usb-c for charging) for my QC25 wired headset but the phone is saying it is not compatible. As anyone solved this?
It's probably the adapter. I've seen plenty of these (and the lightning to 3.5 from apple, authentic and 3rd party) that seem to have issues. Sometimes they work, sometimes they don't, sometimes they allow sound, but not controls (volume and mic).
That's also a reason most headphone companies are going wireless, they don't want to make three versions of the same headphone