Xperia Z5 Premium may have a 1080p interface, render only media in 4K

Xperia Z5 Premium may have a 1080p interface, render only media in 4K
There are already a few forum threads, dedicated to the notion that the Xperia Z5 Premium, Sony's (and the world's) first 4K phone, won't always run the native screen resolution, especially when it comes to the Android interface. To quote one posting: ""[The] Android system runs with 1080p, only the pre-installed video and photo apps could drive the display with 4K. Apparently proprietary drivers are used [where] the "normal" app developers do not have access. So even with the screen capture or other apps [that] see the resolution, it will only show FullHD."

We can attest to that claim, as when we took screenshots from the Z5 Premium at the IFA expo, those were later shown to be Full HD images, not 4K ones. In a nutshell, it seems that you can view 4K media like pictures and videos in Sony's native gallery and player in its full glory, perhaps even set 4K wallpapers, but when it comes to the Xperia UI, it hasn't been redrawn by Sony, or upscaled further than 1080p. Some argue that this actually makes sense, as rendering a 4K interface around would place unnecessary strain on the graphics subsystem, leading to Snapdragon 810 performance slowdowns, and a battery life hit. 

These can be easily avoided by enabling 4K only where it matters most - in the camera/gallery, and during video playback and upscaling. What do you think, will you be satisfied with this eventual Sony approach to the world's first phone with a 4K display?


Related phones

Xperia Z5 Premium
  • Display 5.5" 2160 x 3840 pixels
  • Camera 23 MP / 5 MP front
  • Processor Qualcomm Snapdragon 810, Octa-core, 2000 MHz
  • Storage 32 GB + microSDXC
  • Battery 3430 mAh(19.17h 3G talk time)

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82 Comments

1. Dude2014

Posts: 448; Member since: Feb 12, 2014

They should at least make it Quad HD Interface like GS 6 or Note 5.

12. kent-gaga

Posts: 609; Member since: Apr 10, 2012

it wouldn't make any different anyway

24. kkmkk

Posts: 699; Member since: May 06, 2013

it will make a different QHD looks much better than FHD especially when browsing the web the text look so much sharper and if it will not make a different why to put a 4k from the first place

27. cezarmed2

Posts: 71; Member since: Jul 22, 2014

It wouldn't make any difference. When you have over 400 ppi the text looks equally sharp no matter how much more pixels do you add. Trust us! What makes the difference is the quality of the screen, the contrast, the temperature, etc not the ppi.

70. neela_akaash

Posts: 1239; Member since: Aug 05, 2014

Same thing they did with all of their Z series devices after lollypop update. If you are a owner of Z2 or before models, you would have noticed that the icons suddenly got bigger after the lollypop update. They somehow downscaled the resolution of the Home-screen to improve the battery performance. And it really works. Smart move from Sony. Coz visually you can't see any pixelation in such small screens even with HD resolution. If someone says they can see the difference then it's just a PLACEBO EFFECT or they are looking at a screen with more brightness or contrast (usually with AMOLED). To all the Bashers: i got this info from one of Sony's R&D guy. And this is their secret of being a chartbuster in battery performance.

71. neela_akaash

Posts: 1239; Member since: Aug 05, 2014

I am not a brand lover but +1 to Sony for such a smart tech. I think i am finally becoming a fan to a particular brand.

84. medtxa

Posts: 1655; Member since: Jun 02, 2014

High ppi is actually more benefical on text than images still no one read text too small where you can notice the jagged text, they usually zoom the text or set the font bigger.

79. pwnarena

Posts: 1129; Member since: Feb 15, 2013

please take the time to at least go to a store and compare. 2k vs fhd don't even look that different especially when you are using the amoled 2k screens of the galaxy series.

80. kent-gaga

Posts: 609; Member since: Apr 10, 2012

4K res can make a different if they use the phone for VR, entertaining purpose etc.... not when you use the Interface IMO QHD looks better if you have a AMOLED display with Diamond pixel matrix, not a LCD one with RGB matrix

33. Finalflash

Posts: 4062; Member since: Jul 23, 2013

This actually the best method and the most preferred method. Using the efficient resolution but having the ability to go 4k when needed. It is like playing a PC game in lower turn native resolution because it performs better, in this case it is for the sake of battery not just preferred) performance.

34. Shocky unregistered

On a 5.5" display I suspect you will be able to tell the difference between 1080p and 1440p, especially in 3d games where aliasing will be more apparent. It's a good idea though, I don't blame them for limiting it to 1080p as it increased performance and reduces memory usage. But it does seem a waste.

39. j2001m

Posts: 3060; Member since: Apr 28, 2014

Hahahahhahaahahahahahahhahahahahahahhahahahahahahh​a, what a Pad of crap and I noted users going oh look that home screen looks way better, hahhahahahahhahahahhahahahh and then others just saying it looks the same, then because it does, also shows why Samsung screen edge tech looks, better even when using a video, all dos to oled and the 3d edge look

64. dimas

Posts: 3240; Member since: Jul 22, 2014

Your grammar is so heartbreaking taylor swift's gonna make a music out of it.

2. KushielAOC

Posts: 31; Member since: Sep 02, 2015

This isn't a deal breaker, its still cool. I would like the option to toggle it off and on myself and choose whether or not I care if my battery is gone in a few hours. This is something I'd like to see more phones in general do - Give me the option to do what I want and explain the risks in doing what I want.

13. kent-gaga

Posts: 609; Member since: Apr 10, 2012

maybe the low battery mode can help you turn it off

47. ferretsama

Posts: 32; Member since: Nov 27, 2014

i'll imagine that there will be a Xposed module that forces the phone to render everything in 4K, so that we can choose to view 4K outside of sony apps..

3. Shubham412302

Posts: 545; Member since: Nov 09, 2011

thats like screen saving option in huawei devices

4. jaytai0106

Posts: 1888; Member since: Mar 30, 2011

If this is true... I want this phone even more! I don't need to look at my icon in 4k resolution :D Just saying. I'll have to make sure i am on wifi when I stream 4k video... otherwise it'll eat up my data fast

10. dimas

Posts: 3240; Member since: Jul 22, 2014

Japanese engineers sure know how to make great and practical applications. Samsung should learn from them, having a phone running QHD amoled display 24/7 even at sleep mode sure can drain battery faster.

41. j2001m

Posts: 3060; Member since: Apr 28, 2014

You are up that it will drain battery way faster anyways

23. Tsepz_GP

Posts: 1126; Member since: Apr 12, 2012

Same here. When i 1st heard that this is how it works, I was all for it, as it makes the most sense. hoping to get mine in late November.

5. Genza

Posts: 576; Member since: Mar 12, 2014

That is actually really smart solution, now i have no doubt that Xperia Z5 Premium can have great battery life.

6. dimas

Posts: 3240; Member since: Jul 22, 2014

Selective 4k sampling rendering? I can live with that since nobody cares if my phone is in 4k resolution when it's sleeping or in power saving mode. Since people will buy 4k display because of gaming and the stated media formats, I think it's a good system to conserve battery life.

42. rd_nest

Posts: 1656; Member since: Jun 06, 2010

No games will render at 4K.

72. neela_akaash

Posts: 1239; Member since: Aug 05, 2014

Even Xbox one and Playstation 4 does not render games at 4K. There are so much illiteracy at PA users when it comes to technology..

7. ander204

Posts: 21; Member since: Feb 27, 2015

i think this is actually smart! battery life will be very a lot better with this

8. rd_nest

Posts: 1656; Member since: Jun 06, 2010

"In a nutshell, it seems that you can view 4K media like pictures and videos..." @PA: Please do more research before posting article. It's not about pics or videos, but ability of some Sony-specific apps to render 4K. Which means it will most likely show 4K only with Sony installed video player and gallery, but not in other 3rd party gallery or video player as they don't have access to those drivers. Check this -http://www.heise.de/newsticker/meldung/IFA-2015-Android-laeuft-auf-dem-4K-Smartphone-Sony-Z5-Premium-nicht-in-4K-2803891.html "the Android system run even with 1080p, only the pre-installed video and photo apps could drive the display with 4K." Even more: "However, screenshots of 4K video app only have 1920 × 1080 pixels..."

9. rd_nest

Posts: 1656; Member since: Jun 06, 2010

In essense, you will be looking at a 1080p display 99% of time. Only time you will see 4K is when you look in the pre-installed gallery or video player app.

81. medtxa

Posts: 1655; Member since: Jun 02, 2014

LMAO. What a useles tech. samsung know quality and sony would never beat samsung in quality thats why the only way for sony is to offer gimmick.

11. arch_angel

Posts: 1651; Member since: Feb 20, 2015

Interesting I Might Want This Phone After All. Cause Now I Know The Battery Life Wont Suck. Sony May Be On To Something With A Feature Like This.

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