Sony Xperia Z5: overheating Snapdragon 810 still an issue?

Call it the modern age blue screen of death. Despite numerous reports about Qualcomm fixing overheating issues in the second version of its Snapdragon 810 system chip, we still find some evidence that the issue persists on the Sony Xperia Z5 at IFA 2015.

One disclaimers is due first, though: the Sony Xperia Z5 units that we tested on the showroom floor are non-final prototypes and those issues might be resolved in the final version of the handset.

With this in mind, we were still not very pleasantly surprised to see the 'overheating, shutting app down' message while checking out the camera interface on the Xperia Z5. And no, we were not even recording the demanding 4K video that is known to cause phones to get hot - it was just looking through the various camera options available, right after checking out the overall interface. Put simply, the camera app shut down with no apparent reason, and that's what's bothersome.

We should also note that the phone itself is getting pretty warm, while maybe not as scorching hot as some earlier Xperias. Still, this is a troubling issue that we hope Sony and Qualcomm will find a way to resolve in the final units of the Xperia Z5.

Related phones

Xperia Z5
  • Display 5.2" 1080 x 1920 pixels
  • Camera 23 MP / 5 MP front
  • Processor Qualcomm Snapdragon 810, Octa-core, 2000 MHz
  • Storage 32 GB + microSDXC
  • Battery 2900 mAh(17h 3G talk time)



1. ThePython

Posts: 902; Member since: May 08, 2013

Considering they were demo units and were under intensive use while (possibly) being charged, I'd be surprised if they didn't overheat.


Posts: 322; Member since: Feb 28, 2014

I love Sony, but for a 700+ dollars device and even if it using the SD810 simply shutting down the app is not acceptable no matter what excuse you guys give. What a disappointment!, i would rather pay for a phone that has lower specifications but gives me a consistent performance especially when i am paying that much.

25. Kruze

Posts: 1285; Member since: Dec 30, 2014

Still can't change the fact that they were demo units and they were under intensive use by the people. Fact is not an excuse.


Posts: 322; Member since: Feb 28, 2014

The fact is no matter whether it's a demo or not, it will still shut down even after release of the final version. what i am trying to say whether it is Sony or any company for that matter there should be no heat issue in the beginning. Sure you can blame the SD810 but who forced Sony to put it in, they could have used another processor which doesn't cause the issue and highlight the fact that no matter how long you use your phone the heat issue is not a problem. We shouldn't defend any brand if they are not meeting the consumer expectations and at the same time charging them big time.

67. RangoX

Posts: 77; Member since: Feb 20, 2015

They can't even tweak and trick the demo unit to avoid overheating... That's bad.

81. ilani

Posts: 90; Member since: Dec 23, 2011

woah woah, easy there volkswagen!!!

29. marorun

Posts: 5029; Member since: Mar 30, 2015

Then dont get a S6 its can only do 5 min of 4k ( limited to prevent overheating ) After 2-3 time 5 min its do the same thing and shut down the camera lol. At least the Z5 can do 10 min for 2-3 time before overheating. See how some ppl can be moronic to the point of beleiving all propaganda?

44. GTNavy

Posts: 55; Member since: Oct 13, 2014

The S6 can only do limited 4k because of its limited storage. If you did more than 10 min. you would run out of memory. It's the reason I will never buy a phone without expandable storage.

56. alex3run

Posts: 715; Member since: May 18, 2014

Yu must have GS6's screenshots? People are waiting.

33. DoggyDangerous

Posts: 1028; Member since: Aug 28, 2015

Sony fans are getting furious that why PA has shown Z5 over heating? they dont want to hear anything against sony. Relax sony boys, its 810 which is over heating not the sony. SD810 is culprit, Sony is a great company and great phones. Nothing is against sony. PA is making you aware about one possible issue before buying. PA is doing good to you, plz just dont go nutts out of fan boyism.

61. techbuttcheex

Posts: 204; Member since: Jul 25, 2015

This is the pitfall of relying on a third party chip vendor. Apple and Samsung have inhouse ARM chips, so they can eschew Qualcomm's offerings. I wish Sony could go with one of the awesome Nvidia chips, or perhaps even a Atom.

73. BaffledTruffle

Posts: 523; Member since: Dec 07, 2013

Nah. I tested a demo Galaxy S6 Edge unit on a Carrier Store before. It was on the "a little too warm" level to "this is kinda hot" level. Phones will heat up under really extensive use by lots of people that don't even "kill" the apps after they test the device.

46. rms.max

Posts: 95; Member since: Sep 26, 2012

So you are saying Z5 is the only phone which " has a demo unit and were under intensive use while (possibly) being charged " . The truth is SD810 already brought down htc lg pssibly sony & ms too.What a shame for Qualcomm.basically SD fu##ing 810 did a great favour to samsung and apple.Either qualcomm is a disgraceful dumb-ass or it's a inside job to bringing down those flagships .

72. majidfa

Posts: 5; Member since: Sep 05, 2015

Friends one question , why are three software keys in horizontal situation ? but phone is portrait situation. In my opinion this photo is fake.

2. carlemillward unregistered

Considering people were recording 4K for 10 minutes, it is to be expected.

3. ander204

Posts: 21; Member since: Feb 27, 2015

youtubedotcom/watch?v=1BfBakhs8To There is 2 kind of Z5 at IFA 2015? Why is PA's unit is so bad comparing to the one in video? The Btekt video shows a wooping 10 minutes of 4K video!

9. manojmcn

Posts: 634; Member since: Jul 16, 2015

I think it depends on how much stress has been put on the processor. It may be that after the Btekt video, every other guy rushed to test 4K one after the other and managed to get it overheated.

10. itsjustJOH

Posts: 232; Member since: Oct 18, 2012

PA is using a demo unit in the demo area that was probably used a lot of times by other people and is also probably being repeatedly charged when not in use, while Btekt was given a device and he was the only one who has used it.

12. ferretsama

Posts: 32; Member since: Nov 27, 2014

this. with so many tech journalists trying out the same device in the demo area, it's not surprising that the phone overheats. PA is making a big deal out of this one.

16. marorun

Posts: 5029; Member since: Mar 30, 2015

PA is sold to Apple and Samsung what you expect?

57. alex3run

Posts: 715; Member since: May 18, 2014

"Samsung or Apple fails - don't buy this trash" "Sony or HTC fails - PA is sold blah blah"

40. Xperia14

Posts: 1208; Member since: Sep 01, 2015

I've heard that some demo units were still running on older software from june. It should be completely ok with the newer software.

50. thunderc8

Posts: 98; Member since: Dec 15, 2014

I bet the Z5 is the first demo unit that has been used by many people while charging at IFA,. The other devices are used every 2 hours so they can cool down... What lame excuse by Sony fun boy's, the truth is Sony makes great devices but they got screwed by Qualcomm like every other OEM, it's the snap dragon that causes the hear so stop saying stupid excuses. Why they use it? How about a deal with Qualcomm that if they use it and keep Qualcomm in game with the 810 they will get great discount for the 820 simple as that.

62. techbuttcheex

Posts: 204; Member since: Jul 25, 2015

Z5 Premium likely has better heat sinks due to larger body.

4. senseiJ

Posts: 172; Member since: May 02, 2015

This is surprising. A video from Btekt wherein he recorded 4k video for 10 minutes, as he said, didn't overheat. Sony is still probably smoothing things out -hopefully.

18. marorun

Posts: 5029; Member since: Mar 30, 2015

10 min of 4k video ok. 10 min of 4k video 20 time in a row not ok. see my point here? I can take any phone thats do 4k video and put it on charge and keep on doing video its will do this same error. We tested it in store here on note 5 and S6 edge both eventually overheated as well. Anyway PA love to push this propaganda overheat s**t.

51. hamboza

Posts: 25; Member since: Oct 17, 2012

You're totally right. The Z5 in that btekt video on YouTube did better than my Z3. I just retested my Z3, it wasn't on charge, and brightness at 65%, I got the message about closing the app if the device heats too much at 2minutes45seconds, and the app closed at 7 minutes.

5. Vihangel1306

Posts: 8; Member since: Sep 02, 2015

Im a sony lover had a de xperia z3 and for no reason it would still get hot right now im using the g2 and is warm i think all androids run warm

6. manojmcn

Posts: 634; Member since: Jul 16, 2015

The phones on display during a big event is not the proper place to test heating issues. Especially every other journalist doing the tests one after another. Blame it on the initial failure of SD 810, but reputed magazines should do some scientific tests before rushing with such news. Why I say 810 specifically because if it was a Samsung event no one would bother to run tests purposefully to check the heat. By the way, I do agree Exynos 7420 is far superior to SD 810 and perform well under stress.

31. marorun

Posts: 5029; Member since: Mar 30, 2015

Now for 4k. 3 5 min loop and its overheat and close camera app too.

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