I see a lot of people complaining that the Fairphone 6 doesn’t have an Aux jack.
Just use an adapter cable.
A 3.5mm Aux jack takes up a significant amount of space just to connect a few wires that could be connected through USB-C anyway, that space could be used for a bigger battery.
Even if there was a good enough reason to keep Aux it should be 2.5mm Aux and not the usual 3.5 as it does exactly the same thing but uses less space
People don’t forget you can buy usb-c earphones and they are just as good as 3.5 jack and are widely available now. USB-C earphones come with a DAC integrated in them so you can get a proper sounding pair that may sound better than any 3.5mm you may have used.
Bluetooth still sounds meh
Also mp3 is way overdue for a replacement please check out .opus compression vs mp3