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Hey guys, I have read many reviews where people complain about overheating and excessive amount of heat from the phone localized in one area. Based on the tear down provided by ifixit, there looks to be no EMI shield over the CPU/memory chip area unless it was removed before the photo was taken. But either way, I see that when assembled there is the metal backing to the LCD directly above it which would really dissipate the heat well.
Why not purchase some thin thermal pads and apply as necessary to transfer the heat to the metal frame directly above it. Even if there is an EMI shield over it, open it up (unless it's soldered making it harder) and put the thin thermal pad in there and on the outside of the shield.
Seems like a very simple solution to fix a pretty big problem. I don't have my hands on a Nexus 4 and am unsure if I will in the future but if I ever do I will definitely try this and provide results and instructions on how to do the same.
Or LG could design the phone better.
johnny13oi said:
Hey guys, I have read many reviews where people complain about overheating and excessive amount of heat from the phone localized in one area. Based on the tear down provided by ifixit, there looks to be no EMI shield over the CPU/memory chip area unless it was removed before the photo was taken. But either way, I see that when assembled there is the metal backing to the LCD directly above it which would really dissipate the heat well.
Why not purchase some thin thermal pads and apply as necessary to transfer the heat to the metal frame directly above it. Even if there is an EMI shield over it, open it up (unless it's soldered making it harder) and put the thin thermal pad in there and on the outside of the shield.
Seems like a very simple solution to fix a pretty big problem. I don't have my hands on a Nexus 4 and am unsure if I will in the future but if I ever do I will definitely try this and provide results and instructions on how to do the same.
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Is not a bad idea actually, but i'm not too sure if the display will soffer about it
If only had a n4 to test it XD (i have some thermal pad lying around)
Venekor said:
Or LG could design the phone better.
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This.
Sent from my Nexus 4 using Tapatalk 2
InvalidUsername said:
Venekor said:
Or LG could design the phone better.
Click to expand...
Click to collapse
This.
Sent from my Nexus 4 using Tapatalk 2
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We hack phones to try and make them work better on this website, did you know that?
Venekor said:
Or LG could design the phone better.
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Click to collapse
While I agree with you, thermal pads are relatively cheap and the concerns about pressure on the LCD by another poster would be fine as long as you use a thinner thermal pad that doesn't compress too much after application. I have various thickness of thermal pads so as long as you use the correct one to apply just the right amount of pressure I can only see a large benefit from something so simple.
It would require opening the device and I am unsure if there are warranty voiding stickers in the phone. Some people are really happy with the phone and this is the only problem so I am merely just trying to provide a solution to the one problem remaining.
Thermal pads are to conduct heat from one surface (CPU) to another (heatsink). I can't say I agree with using the screen as a heatsink.
johnny13oi said:
While I agree with you, thermal pads are relatively cheap and the concerns about pressure on the LCD by another poster would be fine as long as you use a thinner thermal pad that doesn't compress too much after application. I have various thickness of thermal pads so as long as you use the correct one to apply just the right amount of pressure I can only see a large benefit from something so simple.
It would require opening the device and I am unsure if there are warranty voiding stickers in the phone. Some people are really happy with the phone and this is the only problem so I am merely just trying to provide a solution to the one problem remaining.
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I wasn't talking of the pressure but the heat that the backplade dissipate, maybe can damage the screen
I doubt it will help,
someone pointed out that the only trigger for thermal throttling is the battery temperature,
http://forum.xda-developers.com/showpost.php?p=34224171&postcount=85
BakaPhoenix said:
I wasn't talking of the pressure but the heat that the backplade dissipate, maybe can damage the screen
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Yeah, i would guess the space there is to keep the heat from the screen...
If this phone runs hot it is most likely due to the glass acting as an insulator. Is there any venting anywhere? I bet much of the thermal issue could be solved with a well placed vent..
sent via xda premium with nexus 7-Xbox live-loneleppard add me
While I can see concerns about damaging the LCD due to the heat but I imagine heat spread over the entire surface of the phone is much better than localizing a much more intense heat in a smaller area. LCDs can withstand a decent amount of heat and a small arm chip spreading heat over the entire surface of the phone would be very minimal to no effect on the LCD. I can see great potential for damage allowing the heat to be confined to a small area (just the CPU and RAM sitting on each other) with no heat spreader or heat sink.
Well I guess we won't be overclocking this phone anytime time soon. And you know I was really hoping I could finally fry me some bacon strips on my way to work.
johnny13oi said:
While I can see concerns about damaging the LCD due to the heat but I imagine heat spread over the entire surface of the phone is much better than localizing a much more intense heat in a smaller area. LCDs can withstand a decent amount of heat and a small arm chip spreading heat over the entire surface of the phone would be very minimal to no effect on the LCD. I can see great potential for damage allowing the heat to be confined to a small area (just the CPU and RAM sitting on each other) with no heat spreader or heat sink.
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Air is a very good thermal isolator, i read that many desktop ips lcs have a maximum teamp. of 35/40 C° so if if the cpu heats a lot it can create problems. I don't know how much is the max temp that this ips can withstand tough.
BakaPhoenix said:
Air is a very good thermal isolator, i read that many desktop ips lcs have a maximum teamp. of 35/40 C° so if if the cpu heats a lot it can create problems. I don't know how much is the max temp that this ips can withstand tough.
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I really think this whole heat thing is a kernel issue at the moment. I remember owning the one x since very 1.26 or was it an earlier one? Either way, the phone would really get VERY hot. After a few updates i barely felt the heat. Maybe when playing games or whatever, all in all the updates solved the issue. I think google will manage to sort it out, i can't imagine them being that stupid.
I guess if you are concerned with the LCD becoming damaged then you could just put the thermal pad on the other side to make the whole motherboard (minus spring contacts) contact the glass back and spread the heat outside including the battery.
And yes air is a very good thermal insulator so all the heat is just getting trapped inside the phone. Gotta use some thermal pads to conduct that heat to a panel exposed to the outside.
These are all just suggestions that I would do if I were to have one in my hands right now.
johnny13oi said:
I guess if you are concerned with the LCD becoming damaged then you could just put the thermal pad on the other side to make the whole motherboard (minus spring contacts) contact the glass back and spread the heat outside including the battery.
And yes air is a very good thermal insulator so all the heat is just getting trapped inside the phone. Gotta use some thermal pads to conduct that heat to a panel exposed to the outside.
These are all just suggestions that I would do if I were to have one in my hands right now.
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The bottom line is if the SOC or N4 design is flawed internally which created thermal throttling, then there won't be much help for inserting thermal pads. I have tried this with HD2 when it had thermal runaway. There was a huge thread figuring out how to cure it by many methods as far as putting the motherboard in the oven to melt the soldering at exact time and temperature. The thermal pads method only decreased a few Fahrenheit which wasn't enough to cure if there was a thermal problems. My HD2's SOC was made by Qualcomm. Something definitely don't add up with bad benchmarks scores, thermal problems. Could future updates cure this? Only time can tell.
I've done something similar with my OCed Samsung i9000, but instead of using thermal pads, I used thermal paste. Similar to the Nexus 4 the cpu IC is sandwiched between the PCB and the metal chassis. The metal chassis becomes a massive heatsink for the CPU which dropped my CPU temp. by 10oC (~17oF) at maximum load.
After 9 months of use there hasn't been any damage or deterioration of the display screen (AMOLED).
Details can be found in the i9000 forum.
http://forum.xda-developers.com/showthread.php?t=1605517
When I receive my Nexus 4 I plan to do something similar.
The only problem i can see with this method is warranty. I'm 100% sure that even if there is no warranty void stickers on the screws they won't accept to fix a phone that has been tinkered with
And try to wipe thermal paste without leaving any trace you will fail
Capt.PP said:
The bottom line is if the SOC or N4 design is flawed internally which created thermal throttling, then there won't be much help for inserting thermal pads.
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It is not flawed as such, it is just overdimensioned.
In essence it is a double APQ8060A + quicker (more power hungry) GPU + additional management circuitry. So it should not surprise, that under full load (benchmarks) it burns through more than double of the usual dual core Krait phone power. While having similar dimensions/power dissipation capacity.
In their marketing Qualcomm positioned this SoC for Tablets. Now you have it in the phone. Is it bad? Not really, full power quadcore tasks is not a realistic task for a phone. And for a second or two (after this it does not matter anymore since your phone "lags") the existing cooling is perfectly adequate.
One thing where Qualcomm/LG/Google could do better are the GPU drivers. Which currently seem badly tuned.
I just bought my Nexus 4 about 3 weeks ago, and noticed that it get considerably hot, and I mean, Reallyyyy hot, even when im not using.
So I've been trying out several roms and kernels and finally found the perfect solution and thought I should share it with everyone out there facing the same issue.
Just flash the latest stable version of CyanogenMod, and do not flash any extra kernels with it, leave it as it is, and notice the difference, it doesnt even heat up that much anymore, not even with extreme gaming.
Another tip, if u have touch control, or wave control installed, make sure they arnt working in the background as they keep the alot of sensors working even while the screen is off.
Just thought i'd share this.
Sent from my Nexus 4 using xda premium
problem is, threads like this keep continuing the falsity that the n4 has an overheating issue, when really it does not. its supposed to heat up with use, every similar device does, many even warmer then the n4. my question to you is, what temperatures did your nexus 4 reach that you are saying it "overheated"? cpu temp? battery temp? if it actually overheats, theres a safety mechanism in the device that will shut it down so it can cool off. plus, the n4 has that glass back, that makes it "feel" hotter than it actually is. if it had a plastic, carbon fiber, or metal back, you wouldnt really feel it.
also, very important, what is the air temperature around you?
simms22 said:
problem is, threads like this keep continuing the falsity that the n4 has an overheating issue, when really it does not. its supposed to heat up with use, every similar device does, many even warmer then the n4. my question to you is, what temperatures did your nexus 4 reach that you are saying it "overheated"? cpu temp? battery temp? if it actually overheats, theres a safety mechanism in the device that will shut it down so it can cool off. plus, the n4 has that glass back, that makes it "feel" hotter than it actually is. if it had a plastic, carbon fiber, or metal back, you wouldnt really feel it.
also, very important, what is the air temperature around you?
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This.
Guys, just google any smartphone powered by dual+ core+overheating problem+xda and I assure you will find similar threads. The last device I didn't feel much heat on was galaxy r with tegra2 1ghz. Everything more powerful than that was noticeably warmer. But honestly I really don't think that N4 gets warmer than my old S2.
Yeah temperature around you is very important. Let's say you ride the bus on hot sunny day and check some websites. It's not browsing itself that causes overheating, but the combination of few factors. The device is actually already warmer than usual when you take it out of the pocket.
If the phone was overheating, it would turn off. Yes, it gets warm, but not as warm as you think. You only notice it because it has a glass back. Mine isn't getting any hotter than my old nexus s. Under heavy use, it doesn't go above 45C, which is an OK temp.
From a Nexus 4 bathing in Jelly Beans
To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app
My nexus 4 reached up to 77C. It never shut off or anything. I called Google and they said as long as everything still works its fine. I thought it was a lame answer but we will see. Battery got up to 56C.
younix258 said:
To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app
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1. Throttle temps are actual very low.
2. It's glass. Glass absorbs hest from the ambient air very easily ( it is summer for many) and from the inside of the device.
3. The phone shouldn't get to hot to hold to ear. I have never felt the display to be hot. Unless it was in direct sunlight.
4. All modern smartphone phones will throttle. Yes this one is more aggressive than most but they all do it. The amount of power all the modern high end chips can draw under load is the highest it has ever been. So they get hotter than ever. Since they are passively cooled, even the best designed phone under full load will throttle.
5. The only good reason for threads like this is to inform the user there isn't a problem. There are no issues.
younix258 said:
To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app
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thats the thing, its not a phone. its much much more than that. you ever feel how hot a laptop could get? anyways, i do agree with you with one point, that lg, or google, chose to set the cpu throttle temperature too low as a default. having root, i choose to disable thermal throttle, so i never have an issue with with my cpu being throttled down. i sympathize there with non rooted users. but thats only a software fix(the difference is changing a Y to a N in a file), thats not an issue with the n4 overheating.
---------- Post added at 02:07 AM ---------- Previous post was at 02:03 AM ----------
albundy2010 said:
1. Throttle temps are actual very low.
2. It's glass. Glass absorbs hest from the ambient air very easily ( it is summer for many) and from the inside of the device.
3. The phone shouldn't get to hot to hold to ear. I have never felt the display to be hot. Unless it was in direct sunlight.
4. All modern smartphone phones will throttle. Yes this one is more aggressive than most but they all do it. The amount of power all the modern high end chips can draw under load is the highest it has ever been. So they get hotter than ever. Since they are passively cooled, even the best designed phone under full load will throttle.
5. The only good reason for threads like this is to inform the user there isn't a problem. There are no issues.
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you look familiar to me, where have i seen you..
Waiting for you to post the solution on how to use the volume buttons on the side of the phone.
What do you expect with no laptop class ventilation?
Sent from my Nexus 4 using xda app-developers app
youssef.sala7 said:
I just bought my Nexus 4 about 3 weeks ago, and noticed that it get considerably hot, and I mean, Reallyyyy hot, even when im not using.
So I've been trying out several roms and kernels and finally found the perfect solution and thought I should share it with everyone out there facing the same issue.
Just flash the latest stable version of CyanogenMod, and do not flash any extra kernels with it, leave it as it is, and notice the difference, it doesnt even heat up that much anymore, not even with extreme gaming.
Another tip, if u have touch control, or wave control installed, make sure they arnt working in the background as they keep the alot of sensors working even while the screen is off.
Just thought i'd share this.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
My N4 get realy hot too, when i'm outside (38C-42C) i can't talk because it burns my years but i see MIUI and 4.3 the heatting issue is gone, i mean it's still hot sometimes but not burning.
I've got a Optimus Black when it first appeard and i got even hotter...
Actually, the Nexus 4 is more prone to overheating than, say, the almost identical Optimus G. Something about a small space in the Nexus 4 somewhere that doesn't conduct heat as efficiently away from the SoC, unlike the Optimus G.
However, like said before, it is summer for most people and it got hot in the UK, so your phone will be warmer than usual if left in the pocket or in the sunshine, but you can't expect to use a phone that's running at 55C-60C by only browsing, can you? Have you guys noticed the drastic temperature difference between wifi usage (low temps) vs data usage (high temps)? This pattern is present in most if not all phones but not as drastic as this, no way.
Then again, sometimes Franco's app is reporting 40-45 C and the phone feels really cool to the touch, and another moment, it's reporting 38 C and the back feels hot, so there's lots of factors that play in this.
Make sure you keep the phone out of the sun, and use Wakelock Detector to see if any rogue apps are holding a dirty wakelock doing lots of syncing especially over data (recent Whatsapp versions have been producing fullsync wakelocks with me everyday).
Disclaimer: other than hot weather and normal heating of the phone, i have not experienced any abnormal overheating, but have a friend who has. My normal temps are 34 C - 38 C, even in hot weather with most of my usage on wifi. Outside in hot weather gets to 42 C - 44 C but that's understandable.
coolnow said:
Then again, sometimes Franco's app is reporting 40-45 C and the phone feels really cool to the touch, and another moment, it's reporting 38 C and the back feels hot, so there's lots of factors that play in this.
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this thought that coolnow just had..
feel doesnt report a temperature, feel only shows that something is warmer than/cooler than whatever body part you are touching it with. its all relative to your body temperature. try this experiment.. get 3 glasses of water, one hot water, one ice water, one room temperature water. at the same time, stick one hand into the hot water and the other in the ice water. keep them in there for a minute. now pull both of your hands out and stick them both in the same glass of room temperature water at the same time. this will mess with your senses, so be warned! the hand that was in the hot water, will feel the room temperature water to be cold, the hand that was in the ice water will feel the room temperature water to be very warm, while they are both in the same glass of water. so you see, reporting how something feels is very inaccurate and unreliable.
As simms22 point out about the feel, that is a terrible way to judge it.
Also so is the actual number from franco's app. His app measures the cpu (Soc) temp. It doesn't also include the battery temp. The higher battery temp will make the phone feel hotter even if the cpu temp is basically the same. Example when changing from the wall. It's also much larger than the SoC so it warms up a gesture surface area more quickly than just the SoC.
It's also located on the middle to lower part of the phone where it is more common to have your hand. Compared to the near the top / camera location for the SoC
Another thing that is obvious but I never mentioned. Is the phone is black. A black glass phone in summer sunlight ( on a call holding the phone up to your ear) will get hot. Even if the thing was turned off.
simms22 said:
this thought that coolnow just had..
feel doesnt report a temperature, feel only shows that something is warmer than/cooler than whatever body part you are touching it with. its all relative to your body temperature. try this experiment.. get 3 glasses of water, one hot water, one ice water, one room temperature water. at the same time, stick one hand into the hot water and the other in the ice water. keep them in there for a minute. now pull both of your hands out and stick them both in the same glass of room temperature water at the same time. this will mess with your senses, so be warned! the hand that was in the hot water, will feel the room temperature water to be cold, the hand that was in the ice water will feel the room temperature water to be very warm, while they are both in the same glass of water. so you see, reporting how something feels is very inaccurate and unreliable.
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That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference).
coolnow said:
Wow, it took you 158 words to get to my point? That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference). But thanks anyway for your useless post :good:
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In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.
snapper.fishes said:
In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.
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Somehow, i took his post as heavy sarcasm. I've edited my post.
coolnow said:
Wow, it took you 158 words to get to my point? That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference). But thanks anyway for your useless post :good:
Click to expand...
Click to collapse
snapper.fishes said:
In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.
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really, i wasnt arguing with you, i was backing you up, explaining, because unfortunately most people dont know that feel is just a measure of temperature difference.
what i think the issue is, is that lg(or google) had the cpu throttle temp set too low on stock devices, giving people a noticeable reduction in performance within a normal temperature range, plus the whole glass back thing, therefore freaking out many. enjoying the freedoms of root access, i disable thermal throttle, so i dont notice any of the affects that the throttle would cause.
---------- Post added at 04:30 AM ---------- Previous post was at 04:29 AM ----------
coolnow said:
Somehow, i took his post as heavy sarcasm. I've edited my post.
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and im out of thanks, but thanks
It is true that the Nexus 4 is heating more that other devices, it has been know even before its release. I had them too at first, when using heavy apps or games. But some roms and kernels make it heat more than normal because they are putting the cpu freq constantly at the max (1.5 GHz), that's why some users have problems constantly. I use the Paranoid Android rom, which is pretty light speaking of cpu usage, and franko kernel putting the max cpu freq at 1Ghz, also lowering the voltages. It helps a lot.
Every device I've ever had, htc desire, archos 70it, galaxy s2, galaxy s3, galaxy tab 10.1, nexus 7, nexus 4 and nexus 10 all have a new thread like this every week, just because the device "feels" hot. All our SoC are so powerful these days do have a high TDP and that's made worse by our SoC's relying on passive cooling. We won't have cool CPU's anytime soon, unless you want a fan or any other active cooling mechanism. Anything under ~80C is fairly safe for modern SoC's and isn't really anything to worry about. When you CPU get's too hot it will aid passively cooling by thermal throttling the CPU to a lower Frequency and if it carries on going up, then it will shut down before any damage is done. With all my devices I've done the same test, Undervolt, turn stress test on when SoC is at ideal temp and time how long it take to reach a certain temp. Repeat the experiment several times. I found that my nexus 10 heats up by far the fastest, thanks 32nm A15's and the nexus 4 was one of the coolest, only being beaten by my galaxy tab 10.1, 40nm dual core A9. To be fair, I do have a faster binned chip. Even my 1.4ghz exynos 4412 s3's core temp was higher than the n4's, you just couldn't feel it as much through the plastic. The nexus 4's heat dissipation even with the minor fault compared to the optimus G is reasonably good.
Hey everyone. I'm new to the Nexus 5 community, got my phone a week ago and so far it feels like ive had it for ever. Great device and so worth my limited money.
Anyways. I have been doing these methods on all my phones and so far i haven't seen anyone else trying this.
1. Speed cool your phone
If you have a heat sink from an old pc laying around (unless its one of those huge gaming computer heat sinks) it can now have a purpose again. If your phone gets hot, simply put the heatsink copper side up and put your phone on it. about 2 minutes later your phone should be as cool as it can get without using a freezer.
2. Keep phone cool while wireless charging.
I got a wireless charger recently, and sometimes the phone doesn't get hot at all, and other times it gets VERY hot (about 115 degrees F). So instead of finding the 'perfect' position for my phone to stay cool, i found that using simple cup stands or what ever they are called, helps.
You know those things at restaurants that you put your cup on? those things. For best effect, use 2 or 3 of these, put them under your phone while your phone is on the wireless charger. I think it helps because the cardboard isn't very dense and absorbs and quickly lets off most of the heat and my phone never got over 101 degrees F yet.
3. The first method can also be used while charging your phone though a wire.
Sometimes i want to watch a movie or something while charging my phone on a wire, i simply put it ontop of the heatsink and watch the movie. Might be a bit uncomfortable, so try to found a way for it to be comfortable.
Hope this helps anyone, im still working on a way to make a home made (thin) heat sink for wireless charging.
heat sink testing
So far ive built the heatsink, its about 6 - 7 mm thick using those cardboard cup stand things mentioned above, coper wire, and silicone, and some superglue. i thought tape (specifically the adhesive) would melt under heat.
So far, i have charged my phone all the way up from 20%, temeprature hit 118 degrees F (note this is wireless charging).
Currently testing the heat sink. Charging it up from 85 %. So far at 92% and max temperature is 97F but has gone down to 96F. The heat sink is pretty warm compared to the phone (the phone is actually quite cool).
If you would like to mess around with the design this is how i built it.
Took one cardboard cup plate and put a copper coil on it. I just took about 10 inches of copper wire (thin kind) and made it into a wide coil (ill post pictures later), and then hammered it to be more or less flat. Put small amounts of superglue to hold it in place. Took the second cardboard plate, and put it on top. Used silicone to seal the edge to hold. Also add some super glue to the top of the coil to glue it to the top cardboard piece.
Simply put the heatsink under the phone while wireless charging.
Pictures of heatsink
Here are the pictures.
Ill post screenshots later of the test.
I do the same thing for wireless charging. Instead of making one, I bought a set of ceramic/porcelain/granite (I don't really know) coasters. I used one coaster for wireless charging, and four more under my laptop for when it is on the counter or table (keeps it cool and above any drinks that may spill).
upndwn4par said:
I do the same thing for wireless charging. Instead of making one, I bought a set of ceramic/porcelain/granite (I don't really know) coasters. I used one coaster for wireless charging, and four more under my laptop for when it is on the counter or table (keeps it cool and above any drinks that may spill).
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link to the materials? Sounds like good idea.
I have this huge granite/porcelain slab my mom uses to beak bread. i wish it wasn't a 2 foot x 2 foot size, maybe i could have used that instead.
ALSO
so far the temperatures would go up to about 99F and then go back down to around 96...i think what happens is the phone heats up, then the heatsink takes the heat, and cools down while the phone heats up again...cycle
russian392 said:
link to the materials? Sounds like good idea.
I have this huge granite/porcelain slab my mom uses to beak bread. i wish it wasn't a 2 foot x 2 foot size, maybe i could have used that instead.
ALSO
so far the temperatures would go up to about 99F and then go back down to around 96...i think what happens is the phone heats up, then the heatsink takes the heat, and cools down while the phone heats up again...cycle
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As I mentioned, I am not exactly sure what the material is. My guess is ceramic. I had the idea when I saw them in a store.
You can find them just about anywhere, and decorated any way you like (mine are plain). Link to Amazon
The granite slab you mentioned should work just fine. I never precisely monitored the temperature, but I know its a lot cooler.
upndwn4par said:
As I mentioned, I am not exactly sure what the material is. My guess is ceramic. I had the idea when I saw them in a store.
You can find them just about anywhere, and decorated any way you like (mine are plain). Link to Amazon
The granite slab you mentioned should work just fine. I never precisely monitored the temperature, but I know its a lot cooler.
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Haha like I said that slab is huge for an oven made to bake on. So if I had something to cut me a slice I would.
I was just sitting at my PC and I saw the little cardboard things and though why not try it. I tried with two and it seemed to work okay-ish so like I used my copper heat sink I thought of putting copper in between. Took me 5 minutes to make.
But I'll definitely give the porcelain a try.
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I don't recommend putting anything between the phone and the wireless charger, increased distance means less power into the phone and more wasted into the air. Also I don't think the plastic case of the phone will interface well with a metal heatsink but I admire your tenacity.
Maybe log your temps with and without and compare, though you would have to adjust values for ambient room temps otherwise a warmer day could throw off all your results.
bblzd said:
I don't recommend putting anything between the phone and the wireless charger, increased distance means less power into the phone and more wasted into the air. Also I don't think the plastic case of the phone will interface well with a metal heatsink but I admire your tenacity.
Maybe log your temps with and without and compare, though you would have to adjust values for ambient room temps otherwise a warmer day could throw off all your results.
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Yeah I noticed it takes a bit longer to charge but wireless charging is never actually fast as cord charging. I get about 1% ever minute with screen off and 1% every 2 minutes with screen on.
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Also I think its worth a try, maybe someone can come up with something more effective.
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just out of curiosity, completely. whats the point of this? heat is normal, especially while charging, and does not hurt the device. for the fun of it, i reach cpu temp shutdown purposefully all the time(105C), on all my devices, for years. heat has never ever caused any kind of damage to any of my devices. as the safety temps for battery and cpu shutdown are actually below the temps that our devices can handle before it can cause any damage.
simms22 said:
just out of curiosity, completely. whats the point of this? heat is normal, especially while charging, and does not hurt the device. for the fun of it, i reach cpu temp shutdown purposefully all the time(105C), on all my devices, for years. heat has never ever caused any kind of damage to any of my devices. as the safety temps for battery and cpu shutdown are actually below the temps that our devices can handle before it can cause any damage.
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Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
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russian392 said:
Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
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Battery degradation occurs on all Li-ion batteries. Heat has very little effect on the overall lifespan of the battery. You can expect about a 30% loss in capacity every year no matter your usage patterns.
russian392 said:
Well looks like I have the exact opposite experience than you. All the phones I've had eventually had degraded battery's because of over heating. I had phones that would last 4 hours on an old battery and 12 on a new one. And that's just from gaming and such. Now charging is pretty much directly heating a battery. Also some people don't like picking up a piece if lava.
If you think its pointless then don't do it.
Sent from my Nexus 5 using XDA Premium 4 mobile app
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im not planning on it. as i said the very first thing, out of curiosity.
now degraded batteries that early can happen, but its mostly because of manufacturing defects. the chances of that happening more than once in a row is fairly low. but you said multiple times. which leads me to believe that theres either something wrong with your phone physically, or maybe you are doing something wrong. as i said, on my g1(s), ion, og droid, nexus one, nexus s, galaxy nexus, nexus 4, nexus 7, and nexus 7, ive never had any issues because of heat or because of battery. i do all the testing for trinity kernel, while testing i try to "break" the kernel. part of that testing is keeping the temps right under the thermal shutdown temp for long periods of time. i have yet to see any kind of damage because of this(except for me "breaking" any test kernels).
raptir said:
Battery degradation occurs on all Li-ion batteries. Heat has very little effect on the overall lifespan of the battery. You can expect about a 30% loss in capacity every year no matter your usage patterns.
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True that too. But there is enough research to support that heat does slowly degrade the battery.
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simms22 said:
im not planning on it. as i said the very first thing, out of curiosity.
now degraded batteries that early can happen, but its mostly because of manufacturing defects. the chances of that happening more than once in a row is fairly low. but you said multiple times. which leads me to believe that theres either something wrong with your phone physically, or maybe you are doing something wrong. as i said, on my g1(s), ion, og droid, nexus one, nexus s, galaxy nexus, nexus 4, nexus 7, and nexus 7, ive never had any issues because of heat or because of battery. i do all the testing for trinity kernel, while testing i try to "break" the kernel. part of that testing is keeping the temps right under the thermal shutdown temp for long periods of time. i have yet to see any kind of damage because of this(except for me "breaking" any test kernels).
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Interesting. But I'll stay on the safe side.
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russian392 said:
Interesting. But I'll stay on the safe side.
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cool.
as everything is different depending on everyone else's experiences in life.. most important is that you are satisfied by doing it
simms22 said:
cool.
as everything is different depending on everyone else's experiences in life.. most important is that you are satisfied by doing it
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You can say that again ?
Also...I notice that charging the phone bellow 80% (like even if I start charging at 75%) temps get to about 103° with my heat sink. But when it goes over 80% it starts to cool down. Still doing lots of testing and logging though.
Edit:
Here is something to read
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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russian392 said:
You can say that again ?
Also...I notice that charging the phone bellow 80% (like even if I start charging at 75%) temps get to about 103° with my heat sink. But when it goes over 80% it starts to cool down. Still doing lots of testing and logging though.
Edit:
Here is something to read
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my Nexus 5 using XDA Premium 4 mobile app
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yea, it charges "faster" before 80%, then slows down. then slows down again around 92%. oh, and that article is outdated. our batteries are a newer tech than when that article was written(2010).
Using a Wireless charger doesn't generate that much heat lol.
I don't use my device while charging it either.
I was able to get crazy good benchmarks with the phone over the AC vent. So we obviously have a physical thermal issue. I have replaced the battery 3 times twice on my wife's mi mix. So I am wondering if anyone has tried to do anything.
I had planned to use slim copper shims with some premium thermal paste but never got around to it. The thermal pad/rubber on the sd821 looks like crap.
I don't get any perfomance improvement using copper shim, also complicated to install it correctly. At some point i got ghosting image on the lcd. Because it's little bit to thick.
Different height between cpu and pmic.
I'm planning to change it with some premium thermal pads. I'm sure it will be enough, because we don't talk about a 100W processor.
What kind of temps are you getting?
kevin168 said:
I don't get any perfomance improvement using copper shim, also complicated to install it correctly. At some point i got ghosting image on the lcd. Because it's little bit to thick.
Different height between cpu and pmic.
I'm planning to change it with some premium thermal pads. I'm sure it will be enough, because we don't talk about a 100W processor.
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Thank you for sharing! So we can skip the copper shim. What about a copper back replacement? Like make an AutoCAD of the back plate and have it CnC'd online?
I know it sound like I'm putting too much effort but I love to tinker with things.
reID.entify said:
What kind of temps are you getting?
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Using miui nougat version + psychedelic kernel 0.7
Downclocked maximum cpu and gpu core.
Around 72-80c, while playing games like pubg.
I removed thermal control files also.
When normal use like browsing,chat,youtube.
It's just around 38-45c, phone is cooling down faster in my experience.
I'm living in a tropical country, my room temperature is ussually more than 30c.
This phone is a giant oven. If i install MIUI Stock just can B used to griddle Girl's Hair. So, a good 1 is adding thermal paste to the CPU CHIP directly, a good one. When i change the Battery i'll do it.
How much american dollars will cost?
My phone happens to stay around 37-43 degrees even if i am not doing anything. This makes it uncomfortable to hold in my hand. I am using the default case between.
Does anyone else have this issue?
Note: It´s currently 25 degrees here in germany and my phone is not cooling down at all, staying at 39 degrees while all apps are closed and I am not charging.
Pretty normal. Mine is between 31 and 40 degrees - depends what is the room temp of course and what im doing. Snap 888 is a hot processor .
Currently it has 32 degrees - phone is cool.
Btw. The temps improved a lot on A.19 and A.20 version. On A.15 and A.16 my phone was getting hot easily.
I live in the desert... I know a lot about heat and fried electronics
It's running hot because of services running in the background. It's in the 90's (°F) here and my 10+ is running at 97F; a couple degrees F above ambient. If it was running like the OP's I would need to turn it off or cool it! Not acceptable.
Google Backup Transport, Framework, Firebase, Google play Services and all cloud apps are prime suspects.
Trashware like FB, WhatsApp etc.
Hunt down the perpetrators and deal with them directly.
Power management can also cause excessive battery usage by interfering with needed dependencies. Turn off all power management and go from there.
Clear system cache.
Try a network reset.
Disable wifi unless you need it.
Cool or stop using phone once it reaches 100°F*.
*37.7778°C
The Fahrenheit scale is geared much better to real life usage than the Celsius system. It's range is scaled better for the temperature you live in.
43°C or 109.4°F is too hot. Max is 103°F for me and then I shut it down.
Don't expect auto thermal shutdown to save your device! The temp can rise faster than the sensors can detect it in critical areas like the AMOLED display with it's millions of temperature sensitive semiconductor junctions... and little heat sinking capacity. It's also helping to sink heat from the mobo and battery. Worse, glass is an effective insulator but you can feel how warm the display gets as it helps to sink the heat.
A case can also contribute to the problem. Some cases sink the rear cover heat better. I'm not advocating running the phone bare though as one drop is all it takes. Just be aware of this.
Using a damp microfiber cloth to cool it works well. I wrap one around the whole phone when charging.
Even now it will keep it way below 100F when fast charging.
Airflow should also be used... got a fan on me and the phone this minute.
How do you guys measure the temperature? Built-in menu or an app?
Mostly the temperature should be around the range of 40 to 45 degrees.
latino147 said:
How do you guys measure the temperature? Built-in menu or an app?
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In the weather section (just kidding)
latino147 said:
How do you guys measure the temperature? Built-in menu or an app?
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I watch the battery temp in Accubattery.
At 103F it's turn off time, regardless.