Last month at IFA, Sony unveiled the Xperia Z5 Premium, the first smartphone to offer a 4K display. While the 806ppi pixel density is absolutely stunning to look at, Sony has since revealed that the phone would display select content — such as images and videos shot — natively in 4K, with regular usage downgraded to Full HD:
Xperia Z5 Premium uses its 4K display when you're viewing either the 4K content you've captured using your device or third-party 4K content from streaming services – all other content (including the homescreen and apps) are displayed in 1080p Full HD or lower resolution to simply optimise performance, power consumption and battery stamina so you can use the device for up to two days without charging.
Sony is now offering more insights into its decision to downgrade the display:
There's a few reasons – first up, after extensive user research and testing we found that rendering entertainment content in 4K, but still being able to access and use all the other great Sony smartphone features as normal without compromising on battery life, was an absolute priority for users.
Secondly, many third-party apps are not designed or capable of running at 4K resolution (yet), but as Xperia Z5 Premium's display hardware has a 3840×2160 resolution (4K SID standard) with 806ppi, we feel we've created a future-proof device for the imaginations, developers and apps of the future.
The vendor mentioned that any screenshots will be rendered in Full HD, as Android Lollipop does not yet support 4K screenshots. Sony also talked about the presence of a microSD slot that can accommodate cards up to 200GB, an essential feature when you consider a 60-second compressed 4K video takes up 350MB.
What do you guys think of Sony's decision to downgrade the content to Full HD?