Samsung A55 supposed to have Widevine L1 and HDR. Yet Netflix says it has only L3 and no HDR either (see screenshot). Both Netflix and Amazon Prime Video look quite dull and not very sharp at all. What's happening?
I contacted Netflix I was told that it "may get" the full HD support sometime later. So it looks like it depends on Netflix not on Samsung. No luck with Amazon so far.
Please clear cache and data of netflix and uninstall netflix app. Then reinstall it. It will get fixed. I faced same and I reinstalled after clearing cache and data.