On Fairphone, they flat out refuse to even discuss adding a headphone jack (check the posts in their forums - it's a "hands over ears" no) so I'm sticking with Sony/ASUS (the latter atm as they've been slightly less anticompetitive recently but I'd much rather go to a decent company) until they do... It's not like you notice a phone being 1mm thicker when you have a 3mm case on it anyway