@@habibhussain1808 i have the iphone x and it's almost ALWAYS hot when i watch some 4k videos or play some games...... like holy shit it's even without a case
My hypothesis The skin makes the phone slightly hotter because vinyl has a lower thermal conductivity (about 20% lower) than air. The TPU case does not make much difference in temps because TPU has a similar thermal conductivity to air. The enclosure makes the phone slightly cooler because of the large metal contacting the table to act similarly to a heatsink. It would be interesting to see this experiment repeated on a different surface or with the phone suspended.
There might be some cpu throttling involved as well, which will prevent the phone from getting too hot. It would be quite interesting to see how a case affects cpu performance over time...
One thing there: On the full enclosure style case, you specifically tested a Love Mei. They're the most expensive for a reason, haha. It's built as a heat sink. All that external exposed aluminum is specifically designed to cool the phone. Personal experience there in the past with an LG G4 - an Otterbox case would overheat it to the point of critical cooldown mode if I tried to use it while charging, whereas the Love Mei case I replaced it with later merely got a bit warm in my hand. Now one thing specific to the LG G4 is that the back case cover is not plastic, but rather aluminum, to serve as a heat dissipation area. You even showed that on your FLIR shot, as the heat sink aluminum part was hotter, because it was doing it's job. So... I'd not rule out the fully enclosed cases from being warmer just yet, simply because you bought a really good one, rather than the more commonly purchased all-plastic-and-rubber ones, such as the very popular Otterbox cases. (Man I miss the old fully waterproof ones they made, haha.)
Great finding! I always remove the case of my phone everytime I charge it. It's the clear plastic case kind. I don't know, I'm just paranoid over phones heating up with a case during charging
Quite an interesting finding. Sometimes when using my phone while charging and felt it get warmer, I've removed the case to aide with cooling. I guess maybe it wasn't really all that necessary. Or like I've seen in lots of phones torn down by JerryRigEverything, the heatsink is facing the display instead so the rear doesn't matter all that much.
I actually really appreciate this video. I don't there's a test just like this out there. I was always wondering how cases effect my phone heating up especially now that I have a phone that runs QHD and 90hz
That Samsung Galaxy S10 is just so beautiful especially that prism white colour. Can't wait to switch to the S10 from my iphone 7 plus. This was a HOT test. 🥵🥵 Oh ok I will leave now....
The enclosure has a piece of plastic that may have a lower temp on the outside than the true screen temp, but the case feeling hot is a really GOOD sign that it's helping because that means the heat is getting out to where you can feel it. Definitely not what I expected. All case makers should be testing this and routing this benefit if it exists for their design.
Try cases with WiFi speed, since manufactures have gone from plastic backs to glass backs to improve WiFi speed and most of us decide to put a case on our phones anyway. I would love this video idea, I always thought my phone gets hotter because of the case.
For case I choose middle thick and black color. Middle thick to keep balancing heat and protection and black color to release the heat to case quicker.
Arun, air is an insulator. Almost every denser material will allow heat to spread. So an air layer will work as an insulator, not a help to get rid of. For this case, you need an air flow. The more dense and cold mass you pack next to your phone, the less your phone will heat up. In case this mass is pre heated by sun or simply wearing in in your pocket, the harder it is for the heat to "creap into" the mass.
It's likely that the battery controller is limiting the charging current to prevent overtemp. So regardless of how insulated the phone is, the temperature won't rise; the charging time will just suffer slightly. An additional test using a known insulator (eg. foamboard, wool) would establish whether or not this is the case. In general, it's good practice to validate your results with both positive and negative controls.
Great video and I was waiting for it since you did the overheating comparison. Something to note that when the phone is held in your hand this would help to dissipate the heat even more
Slim Metal cases will interfere the signal strength. Plastic, if not negligible, won't do that much of a difference. But thick plastic case with back metal plate is the literall worst, my phone signal dropped at least 2 bars
Putting a phone flat on the surface is one way to go, but i am sure the results will vary if u hold it up for example. Usually phone heats up while gaming and it matters a lot, because thermal throttling to me is a big issue.
I'm still rocking a marble dbrand skin for this summer because my phone is black and black gets pretty hot in the sun but a pretty white marble design stays cool. I miss phones like the silver/mirror Sony Xperia XZ premium.
The double stress test is just pushing the phone to the control limits. The CPU is throttled based on temperature, the charge rate is manipulated to keep temperatures under control. That's why there's not a big difference.
This was an awesome test and I really appreciate you doing the work and effort to answer this question that many of us had because I had sworn that my TPU fit case from 21 tech what's causing my phone to run a lot hotter than it would without
Don't phones throttle performance especially under heavy load like this situation. And wouldn't it then throttle down to the same upper limit temp? Seems like you should get better performance from any cooling effect provided rather than actual better temps because of the adaptive cpu voltage. Better cooling would allow the phone to up the cpu voltage and increase performance but that would bring the temp back up. Is there a chance the thickness of the cases is preventing an accurate internal thermal measurement or is that not how it works? Could there be something else at work here?
i personally am running the samsung galaxy s9 with the samsung led case, but because i am rarely doing anything taxing on my phone, i have no games installed and the most tasking thing i do to it is either charging it or updating apps. this results in the phone rarely even feeling slightly hot and my end of a normal day battery level is usually around 40% but when i'm not working and listening to musik most of the day does the end of the day battery level rise to 75% from a full charge in the morning. but when i do something taxing is it always on my computer and not on my phone so it is spared from some of the hardest tasks which i would imagine would increase the life of the phone.
Some guy over on reddit recommended this video saying 'phone cases dont cause more heating'. The problem witg this test is that phones have a set temperature for throttling. Thats why the temp is always the same here. Should have used something like cpu throttling app to show performance degradation over time.
It's the metal. As a conductor, it absorbs heat easy but it also dissipate it much faster. I bet you if you had the phone upside down the cooling effect on a metal csse is even quicker.
I know devices will also "charge throttle", which means just like an SOC's CPU & GPU, the phones charge controller will throttle down the rate of charge (current) when a given range of thermal headrooms are hit & this "charge throttleing" could be a reason why simply looking at thermals alone could be deceptive.
@@bhavanishankarhr3954 I think thats why medics existe so you don't have to search online ,as we all know, isn't the most reliable source of information.
Thanks for video. My glass on back of honor 9 is completely cracked. Some damage to front glass. Bought tamper glass and plastic casing. Also using additional rubber case.
Can you test reception difference next? I have a feeling that not only would the signal be worse, but the phone would work harder with all the dropped packets.
@@ritwikreddy5670 metal is a good heat dissipator. Plus most game will automatically limit your graphic setting, for example PUBG. So it shouldn't be a big issues. Phone with glass back IMO will get heated more. Plus phone with metal back is getting rare. Most midrange have polycarbonate back, not metal.
@@dinfinity85 when your case is a better dissipator than your back(like glass), it is obvious that it doesn't make any difference. But if your back is a great dissipator(like metal), you must be picky with your case. In budget and midrange phones, even if you have a metal back, phones heat up real quick.
@@dinfinity85 almost all samsung budget phones have metal back. They only have a glass back if the phone has wireless charging feature. And they have plastic backs if the phone is too cheap.
This IS good news Arun 😃. I have had a fairly substantial case on my Phone for 4½ years, (I actually "almost" forget what my Phone looks like, sans the case - a Nexus 6P), and although I have heard much Ado about Phones getting Hot, I have to say I've Never experienced that with mine 🙂. And Now I know "Why" 🤗. Thank You Arun, Appreciate Your Work 👍. Have a, or Continue having a Happy Sunday 🌄 🌞, JaneLee 🕊️ 6/2/19 - in Pennsylvania USA
Test with CPU load...I have seen my phone getting very hot and screen stuttering with a hard case than no case when i am running intense applications and games on my galaxy s10 with SD 855...so whatever u may say hard cases ( especially rubber ones ) trap heat and cause thermal throttling of ur CPU and GPU
If it’s too hot it will throttle the charge speed and cpu. So the temp is the same. But the phone is slower. So depending on case or not it will have always around the same temp on full load but will slow it self down sooner or later
Aaron -- I've always wondered why someone hasn't created a case that has a grid of tiny holes on the back for ventilation? I get some want water protection, but personally I just want drop protection and additional ventilation only make sense to me.
In the last case you are measuring the temperature of the protective screen that comes with the case and not the phone, it would be slightly better if you took the screen part off and then measured the phone temperature but maybe it's lower still because the battery temp remains low.
Watching too much mrwhosetheboss videos is heating my phone up😂
Relax
My phone is literally hot watching this
Its his voice making your phone blush....lol
Ur phone is lit man
@@habibhussain1808 i have the iphone x and it's almost ALWAYS hot when i watch some 4k videos or play some games...... like holy shit it's even without a case
My hypothesis
The skin makes the phone slightly hotter because vinyl has a lower thermal conductivity (about 20% lower) than air.
The TPU case does not make much difference in temps because TPU has a similar thermal conductivity to air.
The enclosure makes the phone slightly cooler because of the large metal contacting the table to act similarly to a heatsink. It would be interesting to see this experiment repeated on a different surface or with the phone suspended.
nya
I love your scientific explanation. It does clarifies everything. 👍
Can you help me with eva case (ethylene vinyl acetate) will it also makes my phone hotter?
@@reallife5958 expect similar results to the vinyl test :)
@@pizzapita7735 the vinyl skin should not affect it much in your case (pun intended) :)
Your Video quality makes my Phone too hot.
Thats funny
MKBHD : Am I a joke to you * no hate *
😂😂
You must have a potatoe
Wow! I didnt really think about that! Thanks for getting rid of my anxiety for my phone in a double layered case!
Well phones don't usually use active cooling.
Does Your Phone cause your case to heat?
Even this is true...lol
@@hades.6602 yeah?
@@mrwhotheheck5092 by mistake sorry
@@hades.6602 alright
There might be some cpu throttling involved as well, which will prevent the phone from getting too hot. It would be quite interesting to see how a case affects cpu performance over time...
this is my thinking, the phone will keep the TEMP at a 45 so the difference might be not in the temp but in Performance.
@@syarifairlangga4608Linus has that kind of video. I just watched it before this one.
One thing there: On the full enclosure style case, you specifically tested a Love Mei. They're the most expensive for a reason, haha. It's built as a heat sink. All that external exposed aluminum is specifically designed to cool the phone. Personal experience there in the past with an LG G4 - an Otterbox case would overheat it to the point of critical cooldown mode if I tried to use it while charging, whereas the Love Mei case I replaced it with later merely got a bit warm in my hand. Now one thing specific to the LG G4 is that the back case cover is not plastic, but rather aluminum, to serve as a heat dissipation area. You even showed that on your FLIR shot, as the heat sink aluminum part was hotter, because it was doing it's job. So... I'd not rule out the fully enclosed cases from being warmer just yet, simply because you bought a really good one, rather than the more commonly purchased all-plastic-and-rubber ones, such as the very popular Otterbox cases. (Man I miss the old fully waterproof ones they made, haha.)
After a lot of consideration, I chose a metal bumper case,but it only protects the sides of my phone. I learned that any case is perfect.
Diogo Alfaia why not rubber?
@@Hamabeach Metal is a better heat conductor, so it dissipates heat better(I live in a very hot country).
Diogo Alfaia I didn’t realize this before. Thank you.
@@Hamabeach It's great to help!
Metal will affect radio signals. But it looks cooler compared to rubber.
Arun not getting sponsored by Dbrand and he is finally getting revenge, lol
Lol
I've been waiting for this heat test involving case for years. Thank God Mr Whosetheboss made this video. Thank you so much man. Your channel rocks!
Why is there so many sarcastic idiots like yourself on this video
No one:
Absolutely no one:
Americans: fAHreNhEiT
They suck lol
Fuck off, I know we are the odd ones but it wasn't our choice
Virus The Gamer stfu with your ThIs ItEm Is TwO HuNdReD PoUnDs ££€
'sOcCeR'
@@applecider7213 lol, that's so fucking true
Great finding! I always remove the case of my phone everytime I charge it. It's the clear plastic case kind. I don't know, I'm just paranoid over phones heating up with a case during charging
NO WAY, you actually considered my comment on your overheating video to keep the phone plugged in from 0%!?!!😍😍 AWESOME !
This is probably the most straight-to-the-point video on youtube.! Love it!!
love your vids do some best android/ios upcoming games..😁
Android*
I think u should do the test with a glass or metal body phones as they react differently to heat (also not many people have a ceramic back phone).
Bring more videos using S10 5g bro!
Some sort the customization videos that you were doing earlier!
Please I'm tired of saying this all-time
Your voice should be an option for Google assistant Arun.
so stop saying it
Then just send an email to Google and stop saying it here 😁
Stolen comment
@@lifelessjelly_3868 can't send email to Google cuz Google not even using thier own system
So your saying the bigger case acts like heat sink. Thats a pretty cool test! Great video man I love tech lessons like this.
Quite an interesting finding. Sometimes when using my phone while charging and felt it get warmer, I've removed the case to aide with cooling. I guess maybe it wasn't really all that necessary. Or like I've seen in lots of phones torn down by JerryRigEverything, the heatsink is facing the display instead so the rear doesn't matter all that much.
I actually really appreciate this video. I don't there's a test just like this out there. I was always wondering how cases effect my phone heating up especially now that I have a phone that runs QHD and 90hz
Appreciating your hardwork you open the mystery that the case don't heat much the phone.
Definitely not what I would have expected. I'll keep my case on when charging from now on 👍😀
You should have included a flip cover or a leather case as well. They are pretty common.
Agreed completely
You really worked hard on that, good job aran 👍🏻
So finally someone made a video about this. Glad it was you who did it!! Thanks!!
No case: Phone Temp: 45ºC / Battery Temp: 41ºC
Skin: Phone Temp: 46,7ºC / Battery Temp: 42ºC
TPU: Phone Temp: 44,6ºC / Battery Temp: 41ºC
Bulky Case: Phone Temp: 44,6ºC / Battery Temp: 41ºC
Was not expecting those results. Very interesting. Thank you for doing these tests
That Samsung Galaxy S10 is just so beautiful especially that prism white colour. Can't wait to switch to the S10 from my iphone 7 plus.
This was a HOT test. 🥵🥵
Oh ok I will leave now....
don't come back
@@unseenunknown6836 Oh sorry I just did! 😊
just loving these kinda videos lately. you have been smashing it. i have never been any more excited to watch a video...
The enclosure has a piece of plastic that may have a lower temp on the outside than the true screen temp, but the case feeling hot is a really GOOD sign that it's helping because that means the heat is getting out to where you can feel it.
Definitely not what I expected. All case makers should be testing this and routing this benefit if it exists for their design.
Try cases with WiFi speed, since manufactures have gone from plastic backs to glass backs to improve WiFi speed and most of us decide to put a case on our phones anyway. I would love this video idea, I always thought my phone gets hotter because of the case.
Phone heating is a common issue and it's good to see you cover this area. Appreciate it.
I've had this question in mind for a while. Thank you boss❤
You should measure throttling as the phone could be cutting back performance to keep the temprature down
One of the best phone videos I've seen. Very informative. Certainly answered my questions about cases.
I have been waiting so long for your vedios😍😍
Videos not vedio
For case I choose middle thick and black color. Middle thick to keep balancing heat and protection and black color to release the heat to case quicker.
Arun, air is an insulator. Almost every denser material will allow heat to spread. So an air layer will work as an insulator, not a help to get rid of. For this case, you need an air flow. The more dense and cold mass you pack next to your phone, the less your phone will heat up. In case this mass is pre heated by sun or simply wearing in in your pocket, the harder it is for the heat to "creap into" the mass.
It's likely that the battery controller is limiting the charging current to prevent overtemp. So regardless of how insulated the phone is, the temperature won't rise; the charging time will just suffer slightly. An additional test using a known insulator (eg. foamboard, wool) would establish whether or not this is the case. In general, it's good practice to validate your results with both positive and negative controls.
You mean overheating
There is no such word as overtemp
Arun:
Dbrand: ...
Arun: "stickers mak..."
Dbrand: "no more sponsor"
Great video and I was waiting for it since you did the overheating comparison. Something to note that when the phone is held in your hand this would help to dissipate the heat even more
Fantastic vid I love how you do things that are outside the box yet what people really want thank you 100 thumbs up great job.
So glad you made this video. I’m using a chunky spigen case on my note 9 and this has been playing on my mind a lot.
The thumbnail is Absolutely Amazing!!!
*What about phone signal* 🤔
Is it compromised with thinker cases?
Slim Metal cases will interfere the signal strength. Plastic, if not negligible, won't do that much of a difference. But thick plastic case with back metal plate is the literall worst, my phone signal dropped at least 2 bars
wow. really puts me back to Heat Transfer course... surface area and materials... good one!
Rather a useful video. I've always been confused about whether to charge my phone with the case on or not. Cheers mate!
Putting a phone flat on the surface is one way to go, but i am sure the results will vary if u hold it up for example. Usually phone heats up while gaming and it matters a lot, because thermal throttling to me is a big issue.
I'm still rocking a marble dbrand skin for this summer because my phone is black and black gets pretty hot in the sun but a pretty white marble design stays cool. I miss phones like the silver/mirror Sony Xperia XZ premium.
thank you! this is really informative! props for all your hardwork and quality content
Amazing bro..what app is use for phone side pressure gestures..
I've been wondering about the same thing. Thanks for clearing things up. You the best ✌️
you are the only tech youtuber that makes videos that subscribers want, nice vid
Hi Arun, how about your personal preference? Do you use a case, skin, or none at all? And why?
The double stress test is just pushing the phone to the control limits. The CPU is throttled based on temperature, the charge rate is manipulated to keep temperatures under control. That's why there's not a big difference.
Mate, truly innovating with these video ideas
Was waiting for you to upload
What about a hard case? (If it is possible, use one made by Nillkin) It doesn't seem to let the heat out of the back, but sides aren't covered
This was an awesome test and I really appreciate you doing the work and effort to answer this question that many of us had because I had sworn that my TPU fit case from 21 tech what's causing my phone to run a lot hotter than it would without
Don't phones throttle performance especially under heavy load like this situation. And wouldn't it then throttle down to the same upper limit temp? Seems like you should get better performance from any cooling effect provided rather than actual better temps because of the adaptive cpu voltage. Better cooling would allow the phone to up the cpu voltage and increase performance but that would bring the temp back up. Is there a chance the thickness of the cases is preventing an accurate internal thermal measurement or is that not how it works? Could there be something else at work here?
Definitely not what I expected. Very interesting.
Awesome!!!!! Please keep making more of these heat map vids!
You have many new ideas! You are doing a very good work.
This was a huge huge huge problem to me. Thank you for solving this.
I assume this is also okay with tablet rugger cases. 😇❤️
You are a very creative person when it comes to making UA-cam video, well done Arun.
Wow, now that was a surprise, great video, awesome channel 👍🏼👍🏼👍🏼👍🏼🇦🇺🇦🇺🇦🇺🇦🇺🦘🦘🦘🦘Cheers from Melbourne Australia
What about cooling cases? There is only one called "Nanocase" for the iPhone. Would you mind reviewing that?
Quite possible that the phone is thermal throttling to keep it at a comfortable holding temperature.
This test is only valid when paired with benchmark scores.
i personally am running the samsung galaxy s9 with the samsung led case, but because i am rarely doing anything taxing on my phone, i have no games installed and the most tasking thing i do to it is either charging it or updating apps. this results in the phone rarely even feeling slightly hot and my end of a normal day battery level is usually around 40% but when i'm not working and listening to musik most of the day does the end of the day battery level rise to 75% from a full charge in the morning.
but when i do something taxing is it always on my computer and not on my phone so it is spared from some of the hardest tasks which i would imagine would increase the life of the phone.
Some guy over on reddit recommended this video saying 'phone cases dont cause more heating'.
The problem witg this test is that phones have a set temperature for throttling. Thats why the temp is always the same here. Should have used something like cpu throttling app to show performance degradation over time.
Case is the way to go
It's the metal. As a conductor, it absorbs heat easy but it also dissipate it much faster. I bet you if you had the phone upside down the cooling effect on a metal csse is even quicker.
I've always wondered about this, nice video!
I think Spotify is a good battery wasting application standalone 😂
I know devices will also "charge throttle", which means just like an SOC's CPU & GPU, the phones charge controller will throttle down the rate of charge (current) when a given range of thermal headrooms are hit & this "charge throttleing" could be a reason why simply looking at thermals alone could be deceptive.
Thank you, milllions of videos and no-one addresses this issue. Most phones get cooked in the summer.
ohh.. i just saw your finger, you have zinc defficiency.
work on it,,
keep up your health
Okay dr. House
Great observation
Its not zinc its calcium deficiency
@@withstyle7816 white patches on nails indicate zinc deficiency..
Please check online if you are not sure, b efore you comment.
Try not to confuse 😉😉
@@bhavanishankarhr3954 I think thats why medics existe so you don't have to search online ,as we all know, isn't the most reliable source of information.
Thanks for video. My glass on back of honor 9 is completely cracked. Some damage to front glass. Bought tamper glass and plastic casing. Also using additional rubber case.
Can you test reception difference next? I have a feeling that not only would the signal be worse, but the phone would work harder with all the dropped packets.
THE S10 HAS A GLASS BACK.
TEST IT WITH A PHONE WITH A METAL BACK.
Almost every phone on the market right now (especially flagship phones) have glass back.
@@dinfinity85 but the phones for which we have to worry about overheating are midrange and budget phones, and most of them have metal backs.
@@ritwikreddy5670 metal is a good heat dissipator. Plus most game will automatically limit your graphic setting, for example PUBG. So it shouldn't be a big issues. Phone with glass back IMO will get heated more. Plus phone with metal back is getting rare. Most midrange have polycarbonate back, not metal.
@@dinfinity85 when your case is a better dissipator than your back(like glass), it is obvious that it doesn't make any difference. But if your back is a great dissipator(like metal), you must be picky with your case.
In budget and midrange phones, even if you have a metal back, phones heat up real quick.
@@dinfinity85 almost all samsung budget phones have metal back. They only have a glass back if the phone has wireless charging feature. And they have plastic backs if the phone is too cheap.
This IS good news Arun 😃.
I have had a fairly substantial case on my Phone for 4½ years,
(I actually "almost" forget what my Phone looks like, sans the case - a Nexus 6P), and although I have heard much Ado about Phones getting Hot, I have to say I've Never experienced that with mine 🙂.
And Now I know "Why" 🤗.
Thank You Arun, Appreciate Your Work 👍.
Have a, or Continue having a Happy Sunday 🌄 🌞,
JaneLee 🕊️
6/2/19 - in Pennsylvania USA
Thanks. This was what i was looking for
Very interesting and helpful video Aaron! Thank you!
Quality content mate!
Always wondered about this... *THANKS* 👊😊
Damn. As a new S10 owner, needed videos like these. Thanks.
Using sticker rise the temp
DBrand Skin : Left
Plz make a video on how phone coolers change the temperature of your phone, do they help at all ???
Hi ! Arun 👋
Great content as always. From here since 200k keep it up the great work. 😇😃
Test with CPU load...I have seen my phone getting very hot and screen stuttering with a hard case than no case when i am running intense applications and games on my galaxy s10 with SD 855...so whatever u may say hard cases ( especially rubber ones ) trap heat and cause thermal throttling of ur CPU and GPU
Thanks for this video Arun. Big Help 👌
If it’s too hot it will throttle the charge speed and cpu. So the temp is the same. But the phone is slower. So depending on case or not it will have always around the same temp on full load but will slow it self down sooner or later
Aaron -- I've always wondered why someone hasn't created a case that has a grid of tiny holes on the back for ventilation? I get some want water protection, but personally I just want drop protection and additional ventilation only make sense to me.
In the last case you are measuring the temperature of the protective screen that comes with the case and not the phone, it would be slightly better if you took the screen part off and then measured the phone temperature but maybe it's lower still because the battery temp remains low.
I love these kinds of videos Arun!
Dbrand has just left the chat and will never sponsor this channel 😂
This is the only comment that was funny and sarcastic like every other idiot
this vid breaks the one major myth about case keep doing great vid
Awesome vid!! I always wondered this exact scenario
put Fahrenheit in the corner . i dont want to have to go to ecosia to findout what the temp is. btw love your vids