Xperia Z5 4K video test shows Snapdragon 810 heat issues conquered

by XB on 3rd September 2015

in Imaging, Videos, Xperia Z5 series

Xperia Z5 4K video TestSony had to bear a lot of criticism around the Xperia Z3+ which was plagued with heating issues that caused the handset to force-close frequently, particularly when using camera apps. One of the primary reasons behind this is the use of the Qualcomm Snapdragon 810 chipset, which is widely reported to suffer from overheating issues requiring manufacturers to throttle its performance.

The newly unveiled Sony Xperia Z5 also utilises the same chipset, so there was genuine concern how the handset would perform, especially given the Xperia Z3+ woes. Well the latest video test from our friends at Btekt shows that Sony has managed to optimise thermal performance.

They shot a 4K video which lasted for 10 minutes, it could have gone on for longer but the test was cut short due to time constraints. The handset did get “pretty warm” during that time, but not as hot as with the Xperia Z3+. Does this mean that we finally have a smartphone capable of realistic 4K video capture? Up until now, all handsets have had a limitation on how long we can record 4K video due to the performance hit.

It’s not clear whether this is a hardware or software optimisation in the Xperia Z5. Either way, we hope Sony can bring as much of its experience to optimise the performance of the Xperia Z3+ too.

Thanks Basil!

  • adecvat


  • haxona

    WellI PM:ed you guys last week about the improvement on the Z3+ you even got a photo from my video details… so the Z3+ is definitely improved in this department too already!

  • Sergio

    G4 and Z5 are the best IMO

  • Kristo

    Yeah the G4 is still the best, but hey, at least Sony beats Samsung now :D

  • Tony Lam

    Z5 got better contrast better than G4

  • haxona

    Proof of 4k at 22mins on my Z3+ soo

  • Toni_Ai


  • mountain

    according to some tests, z5 got camera force closed after 38minutes of 4k recording. Definately something to write home about.

  • haxona

    G4 looks a tiny bit grainier while the Z5 looks a bit too sharpened its up to each one’s preference but they both blow the 930 and S6 out of the water by a huge margin

  • Kristo

    It does but the proccesing is still not as good

  • omar

    Can you give me the photos source?

  • shhh

    Sony might want to dial that sharpening down, otherwise it’s all looking very good!

  • Toni_Ai

    Don’t think so, look at road mark “stop” on the first picture.

  • Kristo

    38 minutes is really long though

  • haxona

    22mins is 8.4GB(see my photo down below) so that 38min is going to be large as fuck

  • David Hvatov

    Too small size for 4K video.

  • haxona

    Dont give me that BS about not trusting my picture, want me to film all over again and show you the results??

  • Kristo

    excactly, no one is going to film for that long so there’s nothing to worry about.

  • Kristo

    My Xperia Z got crazy hot after recording for 20 minutes in 1080p. The Z5 will be fine, nothing to worry about.

  • haxona

    Yeah the longest video I have filmed is in fact this test 22min video on my Z3+ :P

  • Gitarooman

    Z5 finally record 4K video in HEVC so half that size.

  • it’s already filmed real-time (Z3+ doing almost 15 minutes at 4K), example on yt

  • haxona

    This guy doesnt even believe me though :P

    David honest question do you know how big the files for 4k are or are just trolling?

  • haxona

    I just saw that, holy shit didn’t know we even had that! Woho

  • Chen

    Taiwan media said that Z5 can record 38 minutes 4k video in a room with air conditioner

  • Chaturanaga Manchanayake

    Wow really, that’s impressive. You have the link?

  • haxona

    13mins so far no warning message yet and phone still just a bit warm, I will keep you posted so that you can trust my results :P

    Also the filesize is going to be lower this time because apparently there is HEVC H.265 support in! Yay

  • ZeRo+

    G4 wins

  • Eduardo Otero

    Told you all overheating has ended!

  • haxona

    17min HEVC Z3+ going strong at home with pretty okayish tempratures and that HEVC(H.265) support is awesome because the filesize is around 260MB/Min while it was 380MB/Min on H.264

  • nfs2010

    Yes, it’s such a huge problem when other phones are limited to 5 minutes. I think we all should break our keyboards over this. Come on, people. How can we not record 10 hours of 4K (storage aside) standing in the middle of Sahara (burned as* aside)? This is NOT acceptable

  • Abdul Ghani

    are u blind

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  • Emil Oskarsson

    My Xperia Z can easily get up to 60 degrees celcius when recording for a longer time, but i havent been able to make the camera app force close a single time ;D


    Even if not interested by video, that premium sounds more and more tasty.

  • ZeRo+

    Excuse me….? Maybe you have vision problems …?

  • Raj Singh

    I don’t even like to record for more than 60-90 seconds in HD video. It takes up way too much space.

    I hate — and I rarely use that word — I hate when gadgets heat up. It’s very unpleasant to use when the thing is hot…

  • Vjekoslav Andric

    Are you serious!?!?
    Maybe you should be looking this comparisson on a real computer monitor. From my laptop here, this preproduction Z5 just beat the crap out of G4, in contrast, sharpness, color gamut, detail,…
    S6 shot is not even worth the mention
    Z5 camera will get over 100 score on dxoMark with these results, mark my words


    Try to shot polar bears…

  • Vjekoslav Andric

    G4 is all color washed out and less detail preservation than Z5
    You guys should really be looking this up on a real monitor rather than your smartphones.

  • Vjekoslav Andric

    Nope, the processing is much better on Z5, more color, contrast, more detail preserved, more shaper….
    This new sensor is just amazing

  • Billy de Fretes

    no dude..i love iphone and yet g4 is the lowest

  • ZeRo+

    Sorry but, IMO you`r little nervously, because you can see main.
    Z5 has too sharpened, and G4 soft details. And look at Z5 shadows. they look very darken. Shadows from G4 sample much softer/.
    You have laptop, but i have PC.)
    I must say twice, LG G4 wins!

  • Ambitious Man

    Source, bro? I want see more.

  • Vjekoslav Andric

    It beats LG too, dont you worry about that
    Saying G4 mkes better shots than Z5 from this comaprisson is…just whisful thinking.

  • Timel

    Really? Great jobs!
    Ok, I wouldn’t worry too much about the CPU

    What about a post processing in superior auto?

  • Abdul Ghani

    so u can enjoy g4 with soft details on ur pc i also have a pc with asus 120hz ips panel i can see everything clearly and sharp with extra details on z5 …..g4 even the focused area is ok and g4 out of focused are looks blurred while z5 full pictured is sharp and stable not blurred at all while lg g4 and s6 has aka OIS z5 beats their OIS and shits on it with a pre production software

  • Vjekoslav Andric

    I must say, twice, you are wrong, G4 shot is bland in compare, shadows?…only prove Z5 has much, much better contrast, along with pixel detail and color preservation
    Wait for dxoMark review of Z5 and behold the results…

  • Abdul Ghani

    he is just new troll on xperia blog

  • Abdul Ghani

    to be honest i dont trust dxomark at all but the proof and results from many websites z5 is topping everything in stills and videos and remember this sony themselves said they dont buy that fake OIS in mobile look at the results its way more focused than s6 and g4 and they said they have ois in it loool

  • ZeRo+

    Oh… your Asus has 120hz ips panel, oh you see everything.
    My congratulations)

  • Abdul Ghani

    its like u dont even know about monitor tech and u have a pc ahahahahahahaha

  • Vjekoslav Andric

    Gsma Arena comparisson tool…

  • ZeRo+

    LOL. another idiot..

  • azzido

    Overall S6 looks still best probably due to brighter lens than Z5, S6 uses F1.9 while Z5 still old F2.0, there were rumors to use F1.8 but in fact finished with the same one.

    No matter what the trees behind the building looks much better on Z5 than S6. At least you can recognize it is a tree :) see it? On the left to the red banner.

  • Shaktimaan

    Take that haters!

  • Kabuto Kouji

    Could someone please tell me “where is the notification led” on this handset_?????? has anyone seen it???

  • Abhi

    Wow, new chip revision or just improved cooling solution or both I wonder.

  • Vjekoslav Andric

    Well dxomark are in my book still the most respective camera mainstream comparers, they do not take mpx into account tho
    The magic is not in OIS but sensor quality, and people just cant comprehend that…
    Well, Z5 finally proved the ignorant I guess

  • Shubham Mutreja

    so sony has officially nailed it even with preproduction software!
    BTW presence of noise is good as it tells us sony is not using their crappy noise reduction codes

  • kido

    maybe its pre production software?

  • apolloa

    Agreed, and as the LG uses the Sony sensor, I wonder if the S6 used has the Samsung Isocell in it?

  • haxona

    Overall I think Z5 has the edge but dont dismiss the G4 just like that because it looks good. However that Stop sign(like someone mentioned before) definitely lost some details on the G4 :/

  • Srijan Chawla

    I think it’s safe to say that Sony kicked ass with the Z5 Family :P

  • kido

    not yet lol, i wonder if it actually has any lol

  • Akand

    before Z5, I thought Sony isn’t serious at mobile division at all. They just keep it going.
    But seeing Z5, I must rethink. Sony is back on the track. Of course Samsung must increase its payment to media from now…lol
    there is no way to deny that Sony has done quite good and serious job with Z5.

  • Musadiqkhan
  • Akand

    your best S6 photo wasn’t taken at the same time. Look at the umbrellas. On s6 umbrellas are closed, but on other photos are open. so these photo comparison is invalid to me.

  • Akand

    Look at the umbrellas. On s6 umbrellas are closed, but on other photos are open. so these photo comparison is invalid to me. sorry…

  • spwx

    Z3+ got fixed via firmware month after launch, but that wasnt good enough news to be published :-)… there are videos comparing videos on S6 and Z3+ and S6 overheated earlier but nobody reports that.

  • Anukul

    too much sharpness in z5 photos, rest its great.

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  • haxona

    I am well aware of that, I even sent a mail to Xperiablog last week about the new more improved FW but I guess they wanted exaggerated Titles like this “Z5 finally cracks the heat problem that has been plaguing Android 4K”.

    The update last week is personally one of the best updates a Xperia phone has gotten and I have had every main Z phone. The optimization on 8-cores from the engineers is really showing in this .251 FW and I can’t wait how they knock it out of the park with the Z5

    I specifically like how the guys say “keep us posted of your findings” in my their email reply, I mean why should I even do that if your next blog posts talk in the fashion of this:
    “It’s not clear whether this is a hardware or software optimization in the Xperia Z5. Either way, we hope Sony can bring as much of its experience to optimize the performance of the Xperia Z3+ too.” Surprise surprise they already did…

    I don’t want to bash Xperiablog but not a single comment or blog post was posted about the new optimization in the new FW to the Z3+

  • ramuk

    I think he is joking (or being sarcastic) about how media overreacted over Z3+ so called overheating issue.

  • some tests? you mean like sony’s BS PR ;)

  • fried_egg

    agreed, the sun could have moved enough to be a big factor

  • nfs2010

    I know. Me too :P

  • nfs2010

    Can you also see how funny this world is? Talk about dropouts & sheep

  • nfs2010

    Z3+ got 3 updates (including that limited .31 fw) in two months beside the 0.2x day 1 update that sorted out most of the issues . Sony seriously deserves some credit for doing that. XB should definitely highlight this. They’re also worried about their neutral image (which is a great thing). But when the whole media is posting sh*t based on the very first fw (which was a mess, but again there was a day 1 update), XB should jump in & do some tests themselves. I posted this earlier, Come on, XB – you simply can’t rely these paid goofs to do objective reviews. It’d be really helpful for us if you run some basic objective tests on Xperia phones beside citing those retarded reviewers! Please think about it.

  • fluxx

    The umbrellas are one thing. Have a closer look at the tree left of them. LOL

  • Great Dude
    They aren’t from a comparison between these phones but from reviews.

    He take each picture from the review of each phone (except for Xperia Z5 which he takes it from the Hands On) .

  • Great Dude

    He take it from each review of these phones from

  • Great Dude

    Yes Samsung did use its Isocell in SGS 6

  • Great Dude

    They are actually taken from different times since each picture is taken from the review (or hands on) of that specific phone and they aren’t taken for comparison yet.
    I hope we see a much proper comparison in the near future.

  • gamer324

    Z5 to be honest blows them away, just look at the texture detail and colour of the leaves in the z5, every other phone mushed up the leaves , and all of those 3 other devices are GREAT camera phones. Impressive indeed. :-)

  • Great Dude

    Source ?

  • haxona

    Yee its been one of the issues of this site that they rely to heavily on other sites opinions. I am sure Sony if they got the question from XB on press devices that they would surely just send them one seeing as this is the biggest xperiablog out there. I just don’t know why XB don’t do it

  • LiterofCola

    did you even look at the pictures?

  • LiterofCola

    dafuq you say?

  • omar

    Thanks, but remember the z5 is pre-production.

  • Great Dude

    Yeah True and that is why I stated above that it was from Hands on
    And here is the link for the Xperia Z5 camera

  • Svnjay

    Sony has tamed the dragon!

  • Svnjay

    The G4’s lens is known for softening images.

  • Svnjay

    Can you post the test?

  • Svnjay

    Seeing how awesome the Z5 is, especially against it’s competitors…..does it make you regret getting the Z3+ rather than waiting a few more months?

    I don’t regret waiting :]

  • hcm.

    good trolling

  • haxona

    I dobt regret buying the Z3+ because everything I ever wanted from a phone is in it except for that damn Fingerprint Sensor(:D)

    But honestly the aesthetics, the HW, the SW(especially the latest FW) is just superb on my Z3+ right now. The camera is excellent too, as many know the algorithm in the Z3+ was a bit improved and it gives out some stunning results as long as you know what you are doing with the settings.

    Had the Z5 Premium essentially been the upgrade for the Z3+ then I would have been a bit more angry but right now as long as Sony delivers with the same SW as they have on the Z5 then I am all for having my Z3+ for at least 12months more.

    Dont be fooled by the amount of shitty preview reviews that ran on preview fw because the phone is miles better now ND is just as hot as any flagship phone out there or previous Z phones.

  • Eddy Edd

    @TechRadar Hands on Review marks Premium design as boxy a con.. funny how not long ago Samsung received tons of praise for moving towards “premium build materials for its smartphones” even though it was an absolute plagiarism but today when Sony stick true to their great design ethos; its considered con. sigh.

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  • kido

    It doesn’t matter how good the auto shorts are if the z5 doesn’t have full manual controls like the g4

  • mountain
  • adecvat

    They using both: Sony IMX240 and isocell.

  • daniel kudo

    Unsprising, Techradar is known samsung and apple fanboy

  • daniel kudo

    Most of them using Exmor’RS IMX240

  • iia3ezu

    It’s amazing how throttling could be given a spin job as ‘heat issues conquered’. LOL.

    I still think the SD 820 next year is a much better SoC, and one that is a match made in heaven for the 4K screen.

  • betatesterz

    The railings on the 2nd picture…. Too much sharpening T_T
    Also, the G4’s camera Quality is surprisingly good o.O

    Image Quality in the First picture
    Z5 > G4 > S6 > 930

    Image Quality in the Second picture
    G4 > S6 > Z5 > 930

  • Alex Norris

    These examples were taken on different days and therefore they can not be compared and discussed. And once it is clear that, in these examples from Sony as always inflated sharpness, any photographer will notice that. The best result Lg G4 picture has good balance, not oversharpened like Sony, with soft details, good DR, than S6, Z5, and the last place 930
    And this full size sample from GSMArena looks certainly depressing, like the light a lot of and the picture must be of high quality, but on the sky i see artefacts all white noise on left side picture smeared sign of poor, low-cost optical sistem, and blurred trees look pathetic.. Quality like 2 years old flagships, Z1-Z2 level

  • Shubham Mutreja

    its on top left

  • ????

    well i hope you can factor in the fact that z5 can capture a much bigger space. on those comparisons, they look the same but z5’s field of view is bigger.

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  • ????

    stop this preproduction software BS. we all know it’s not going to change in the final version.

  • a.mubher

    Too much drama. No compromises.

  • Geese Howard

    “Xperia Z5 4K video test shows Snapdragon 810 heat issues conquered”

    Nice touch using the word ‘conquered’ Xperia Blog and the Z5 has just conquered my wallet :)

  • Geese Howard

    They say that leaves die away fast on a tree and those photos confirm it! But it was TOO fast IMO lol

  • gamer324

    Go into manual then, SA is supposed to give a processed look, that’s the sole reason for its existence.

    Also to all the people saying that the second picture is better on the g4, open the full-res version and look at those AC Outer units, on the g4 the grills are a blurry mess, but on the z5 you can still discern the shape. It’s the little things that decide who’s better nowadays.

  • Shubham Mutreja

    this guy has time machine too!

  • Gabriel Voica
  • RoberMC

    it is called “detail”, and “good focus”

  • Great Dude

    Ok thanks,although what they said is

    “but also record the phone 38 minutes before the jump Tips temperature, compared with the previous flagship performance improved a lot.”

    I am not sure if that means force closed but probably in your own language it means that while Google couldn’t translate it as jump tips.
    I hope that the final product is even better than this.

  • jag

    I hope that too, xperiablog!

  • ga_pechorin

    i hope under the speakers, like z1

  • Svnjay

    Okay that sounds good, the Z3+ is still a good phone :)

  • Mark Finney

    Agree. The Z5 has slightly higher resolution than the S6 (compare the legibility of the Stop sign at the bottom of the frame) but the oversharpening gives an uneasy look to the building details in the background. If only it offered raw files so you could process it yourself and get the balance right.

  • Vasilis K.

    Throttling at its best!

  • jonyah

    Qualcomm actually tackled the heat issues with a “v2” version of the 810. Sony is obviously using the new revised chip.

  • ZeRo+

    About details…

  • Battal

    Even with Z5 doing good job here but the images between them looks vary in long period of time,
    if you look at the tree on the left you’ll notice that, even the shadows on the building it shows different positions for each image which’s mean each phone capture the same place in a long period of time in a different time of the day, Even though I’m Surprised with the sharpness of the Z5 it’s something was lost in all previous Z series .

  • sevgili


  • Vjekoslav Andric

    Exif data?
    That proposed Z5 shot( if it actually is indeed) is so obviously shot in lower 8mpx resolution (you can see pixels double the size of S6 and G4 on crop), that it just cries out: “troll!”
    Good try though, Keep entertaining us ;-)

  • ZeRo+
  • ZeRo+

    Hey Abdul, liked this)


    Who is troll, me…. or you? :D

  • Abdul Ghani
  • Malcolm Clement

    Dang, that’s really nice. If real this is awesome.

  • Vjekoslav Andric

    That alleged Z5 is the sharpest and best contrast looking, G4 is better in lowlight ( its f1.8 afterall), S6 is the worst.

  • vivio

    it got more Mp but it got wider lens(not that its bad, its great), but for now there is still noise and low light without ois is bad(and manual settings are wonder). BUT, lgG4 is great overall but got totally bad time on battery, then S6+/note5 are “best” with superb screen brightness(even if not the best)+colors,no-noise+manual camera, payment, note-pen, then it all wrecks with max 64GB (not 150/232GB with sd like others). Then add Z5P superfast focus, no-wobbling video with high iso, and long 4K without problems,4k display,IPXX, great battery -using calls/gps/shooting etc. not using 4K upscaling, screen use FHD – means great battery performance. Its hotcake. note5 coming with 256GB,4100mAh, it would be my choice, but no they are in their own (apple-copy) world now about 1year already, I wont support such company even if it was better in something.

  • vivio

    They havent mentioned audio recording quality, S6,G4,Z3 got low quality in comparison to 930,1520,1020.

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  • Shaun Randika

    ur right XD

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