Well, the thing is that RDS is not used in China, so It'd a bit hard for the developers to correctly implement something they don't use and can't correctly test in practice. I have also the experience with MTCD and Topway headunits and on none of them is the AF working correcly. And as you said, the Mediatek one being the only exception. So, let's hope that in the future the devs with the help from testers will make Dudu units the ones with best implemented FM RDS functions, maybe even better than those Mediatek ones You've mentioned ;-)
