Many Android phones, flagships and budget flagships included, often fail to integrate Widevine L1 support into their software. As a result, they lack the ability to play DRM-protected content such as that provided by Netflix in full HD or HDR. The Mate 20 series was one of these; however, this series has finally acquired the ability to stream in HD, while the Mate 20 itself can do so in HDR.
https://www.notebookcheck.net/Huawei-Mate-20-can-now-stream-Netflix-in-HDR.382116.0.html
DRM...after so many times dead in the water some people are still having these unnecessary thoughts about it.