The 4K HDR mobile screen is the first of its kind. To be clear, this is not the first 4K screen (that honor goes to the Xperia Z5 Premium). It is not the first HDR screen either (that was, briefly, the Note7). It’s the combination of the two that is novel. HDR content, however, is still hard to come by unless you use the subscription-based video streaming services by Netflix or Amazon. Read all here: