Fairphone 3 and aptX?

[Johannes]

I think the check mentioned in the first post has been reported on in this topic (a couple of posts down):

Changing bluetooth audio codec

My bluetooth headphones that support SBC, aptX, aac and LDAC bluetooth audio codecs, on the Fairphone 3 they are always using SBC. When I change it to another codec in the developer options it doesn’t have an effect and switches automatically back to SBC when I leave the settings. On other Android phones it usually works to change the codec.