Upscaling ang HDR remaster contents

[Narvik3]

I was wondering if in the Xperia 1, the next clause is true:

"The X1™ for mobile engine brings BRAVIA 4K upscaling and HDR remaster technologies to everything you watch. Even streaming content will have more contrast, colour and clarity"

I mean, does it work all the time with any content. I am asking it because I tried the Xperia XZ3, in which there was a "similar" feature, but I noticed that it only worked during video reproduction from archive (there was noticeable change just the first second during the video reproduction, so it wasn't working before). For instance, there will be "image" enhancement during a videoconference with skype or videogames?