You can cross another resolution off the smartphone display list:
The third device from the Z5 series is the Xperia Z5 Premium, which includes the 5.5" 4k [3840×2160] screen, a 3,430 mAh battery, and the ability to expand its 32 GB of default internal storage by up to 200 GB through microSD cards. The 4k Triluminos IPS display promises to have a high color gamut, higher contrast and higher sharpness, as well. In the few moments I've spent with it at IFA, the screen did indeed look crystal clear.
[...] Xperia Z5 will launch globally in October this year, while the Xperia Z5 Premium should arrive a month later, in November. Both single-SIM and dual-SIM variants will exist for both models.
Some lucky Sony executive is shoving the Xperia Z5 Premium in his Google Cardboard. Next stop, the world's first 5K (5120×2880) smartphone.
(Score: 0) by Anonymous Coward on Friday September 04 2015, @04:37PM
4K is 4000. It's a count, not a measure. In this case, the number of horizontal pixels.
Well, actually they rounded it up. Great for marketing; they say 4K, but you get only 3840.
Anyway, previous names went with the line number —like 1080p —, which would make this only 2K, but hey, marketing wants higher numbers!
Well, what you *can* do is to calculate the pixel density. As a rule of thumb, for 16:9, the height is half the diagonal, so the pixel density is 2160 pixels/(5.5"/2) = slightly below 800 ppi.
(Score: 3, Insightful) by takyon on Friday September 04 2015, @05:41PM
Anon is in jest. Anyway, another article puts this display at 806 ppi. I just found this [wikipedia.org]... guess we ought to call it XXXXHDPI pixel density!
"Cinematic" 4K is 4096×2160. Might as well call it 4.1K!
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