Memories of mythical phones: Sony Xperia Z5 Premium, the first with a 4K screen
Sony shocked the world by launching the Sony Xperia Z5 Premium at the end of 2015 with a 4K screen, the first in its category.
Its design language was based on Omni-Balance, which focused on creating balance and symmetry in all directions.
By the way, Sony released the phone with a mirrored back cover – one of the worst choices I have ever seen on a smartphone. Although the device stood out on the eyes, it was impossible to keep it clean and free of fingerprints.
The first 4K screen on mobile
With no less than 806 pixels per inch, The screen of the Sony Xperia Z5 Premium has the honor of being the dolphin in sharpness in the history of smartphones.
Its sharpness is narrowly beaten by the XZ Premium due to the smaller screen diagonal: 5.50 versus 5.46 (both have the same 4K resolution). The smartphones that Sony subsequently released increased in screen size, so the sharpness was lower.
In addition, it used an LCD display with an RGB subpixel arrangement, so it was still sharper than current OLED displays. with Pentile matrix. In practice, however, very good eyesight was required to appreciate the improved sharpness over a 1080p display at the distance it is normally used on mobile.
What prompted Sony to make a 4K display phone? The company has always prided itself on providing the best image quality. Smartphone cameras had been recording 4K video for a few years now, but phones had to use external displays to display those videos at full resolution.
The Sony Xperia Z5 premium was the first phone that can display 4K video pixel for pixel. The screen was also useful for viewing photos as its native resolution was 8.3 MP with a 16: 9 aspect ratio.
Only a few apps had access to full 4K resolution, with the rest running at 1080p. The photo album was one of them, showing footage in 4K. In addition, it was able to extract images from Facebook, Picasa and Flickr albums, allowing you to enjoy 4K resolution in more images than internal storage.
Movies This was another of the apps that could use 4K, and thanks to the powerful Snapdragon 810 chipset, it was possible to decode this kind of footage – even though it was a chip that got quite hot.
The screen of the Xperia Z5 Premium had its flaws. It wasn’t very bright, peaking at 571 nits by my measurements, and the black levels were pretty poor when the brightness was turned up. Color accuracy was also not up to the flagships.
One of the applications that this display could have excelled in was virtual reality, but Sony never released a virtual reality headset for its phones.
In a sense, Sony is ahead of the rest of the manufacturers by focusing on a very high screen resolution, but the industry has not continued down this path – no other smartphone has integrated a 4K panel – but they have chosen to include high refresh rates.
1080p displays are still fairly common today, even on flagships, but 90-120Hz has long since become commonplace. The first 4K 120fps display didn’t arrive until the beginning of the year with the Xperia 1 III.