Database Users

device heat

I've noticed that the device is pretty hot. I'm not sure, which is why I want to verify this with you.
I've used the "Battery Indicator" app which shows that the temp is 34-37 Celsius.
Does that seem about right?
Thank you

yep that's perfectly normal : )

drm111 said:
yep that's perfectly normal : )
Click to expand...
Click to collapse
Really? Cause it always feels hot in my hand....
Could it be that I'm just hot (cause the weather here is hot as well)?
What would be too hot ( I mean what temperature ).
I've had the phone restart itself twice yesterday after getting too hot (don't know the temp it was at though)

matanc1 said:
Really? Cause it always feels hot in my hand....
Could it be that I'm just hot (cause the weather here is hot as well)?
What would be too hot ( I mean what temperature ).
I've had the phone restart itself twice yesterday after getting too hot (don't know the temp it was at though)
Click to expand...
Click to collapse
34-37c is absolutely normal. Its quite cold where I am atm, and the battery is 37c.
You've also no idea that the phone restarted due to heat. I've gone through 5 replacements now for various reasons, and they all got pretty warm under use. However one of them got stupidly hot, so hot you couldn't even hold onto it without hurting your hand. Thats why I got that one replaced.
And yes, if the ambient temperature is hot, it'll make the phone feel hotter aswell.
None of my GSII's have ever restarted on their own though. Could've been due to an app/widget though.

There has been 2-3 threads on this, one of which I created myself.
It's normal for the device to get quite hot, especially around the camera at the back and the screen near the top of the phone when gaming or watching videos over wifi. It shouldn't get so hot it can't be held though. It also doesn't help if you have a case on the phone, especially a thick gel-type one. I'm currently looking for a thin perforated cover, like the official Samsung one, but unlike that one with protection for the top and the bottom of the device. I suspect these holes will help with heat dissipation.
The phone has inbuilt safety for overheating I believe, although mine has never gotten hot enough to activate it. The phone will shut down if it thinks any more heat will lead to damage.

Pagnell said:
There has been 2-3 threads on this, one of which I created myself.
It's normal for the device to get quite hot, especially around the camera at the back and the screen near the top of the phone when gaming or watching videos over wifi. It shouldn't get so hot it can't be held though. It also doesn't help if you have a case on the phone, especially a thick gel-type one. I'm currently looking for a thin perforated cover, like the official Samsung one, but unlike that one with protection for the top and the bottom of the device. I suspect these holes will help with heat dissipation.
The phone has inbuilt safety for overheating I believe, although mine has never gotten hot enough to activate it. The phone will shut down if it thinks any more heat will lead to damage.
Click to expand...
Click to collapse
Thanks!
Was just about to ask about the case, since I bought a black gel one.
So do any of you know of a case that won't affect the heat ( a lot )?
I am honestly afraid to walk with the device without a case so that I don't break the screen (or scratch it) or break the phone in half (it looks so delicate!)

Like I said, the perforated covers look the best for preventing heat build up, although the official Samsung case doesn't protect the top or bottom corners, which perversely are the most likely parts to be damaged if the phone is dropped. I'd like to get hold of a cover that looks like that but with all round protection.

But, is it also "normal" that the phone gets incredibly hot when you play music with headphones on?
I seem to have experienced all the issues everybody went through (except for the shutdown) but nobody ever mentioned music (i am talking about 3 minutes playback not hours!)
Anybody with the same issue?

Take the back case off and smell near the top left of the phone..
When mine got hot a weird smell came from it.

It's probably worth checking with something like osmonitor that you haven't got a stuck task.
A few times mine has got really hot and it was a process using 96% cpu...
Most recently it was SocialHub which I don't even use! Had to reboot the phone to stop it as it wouldn't die.

I also had extremal heating in that area while playing angrybirds and after I move app from SDcard to internal memory - All comes OK. So I suppose it is because your apps ar data (music etc) located on SD and some of them due to speed limits heats during work. (it is in addition to WiFi and other network activity). Cause when I plug SD into comp by adapter and perform long file framsfer it also heats

So is this thing hotter than the original Galaxy S? I can live with the phone at that temp, but any higher is questionable.

It will shut down if it gets to hot. And I guess it takes quite a bit because a few months ago on engadget.com I saw some video of an iPhone a palm phone and I think a nexus one on a grill to see which one will either break or shut down first. And after like a minute on a grill it finally shut off. So I wouldn't worry about it unless its so hot u can't hold it. Once with my evo I was using 4g GPS Bluetooth. And charging the phone and it got up to around 115° (around 46° in celcius) and was fine. I shut it down tho when I noticed it got that high tho haha
Sent from my PC36100 using XDA Premium App

Mine (running XWKE7) went to 50 c when gaming "we rule" in game hub with charger plugged in. No external SD installed though.

Also keep in mind that fatter phones have more space to dissipate the heat. This phone is thin thin. That heat has to go somewhere! That's why I want a case that vents
Sent from my mobile phone using Tapatalk

Only charging... No more words to say...
Swyped from my overclocked GT-I9100 using XDA Premium App

I think my phone is sometimes very hot.But after I have ROM KE7 I think is better.
Sent from my GT-I9100 using XDA App

as soon as I start playing "real football 11" i can essentially cook an egg on the phone. Other games are fine though

Could it be due to the installation of overclocking apps? Didn't notice it was this hot during my first few days of usage.

In the first few days after I got my SGS II the phone went really very hot every time I charged it or when I played a game or even when I watched a movie.
Since I use Lite'ning Rom and banned some system apps the problem vanished.
So for me it seems to be a software-sided problem.

Help with overheating/throttling

I just bought the nexus 4 and it was running very smooth on stock. But the battery life was kind of bad and the back got hot very fast. I decided to flash faux kernel. Then i set the governor to intellidemand (like many suggested) and didnt touch anything else. Now the phone lags a bit and it heats just as much as stock. Anything i've missed?

NamNamNom said:
I just bought the nexus 4 and it was running very smooth on stock. But the battery life was kind of bad and the back got hot very fast. I decided to flash faux kernel. Then i set the governor to intellidemand (like many suggested) and didnt touch anything else. Now the phone lags a bit and it heats just as much as stock. Anything i've missed?
Click to expand...
Click to collapse
you have a quad core phone with a glass back, itll get hot with use and youll feel the heat escaping through the back glass. this is normal.

simms22 said:
you have a quad core phone with a glass back, itll get hot with use and youll feel the heat escaping through the back glass. this is normal.
Click to expand...
Click to collapse
I mean the actuall battery temp when playing games. What settings do you recomend, like what governor etc?

NamNamNom said:
I mean the actuall battery temp when playing games. What settings do you recomend, like what governor etc?
Click to expand...
Click to collapse
your battery will get hot too, when playing games, especially when plugged in. what temp is it reaching? how about cpu temp? hot doesnt say much, hot/cold is relative. give me a temperature. i dont use faux kernel, so i cant help you with it. i use trinity kernel at its default(1026mhz, all 4 cores enabled, ondemand/deadline. again, heat is normal. having a glass back just makes it feel like its too hot. the glass is there to cool off the phone, transfer the heat to the atmosphere. if it was plastic or metal, it wouldnt feel as hot. if your phone gets too hot, itll reach the safety shutdown and shut itself off. before that point, thermal throttle kicks in too cool off your device. all thermal throttle does is reduce your cpu speed.

I wanted to start the topic about over heating.
My N4 is very hot when i use it normaly. I instaled battery info and i have buld infos. Battery temp. Is about 37°c but it feels like 50°c. Its located around the camera.
Is that normal? Does anybody else have that overheating issue?
Sent from my Nexus 4 using xda app-developers app

krivinash said:
I wanted to start the topic about over heating.
My N4 is very hot when i use it normaly. I instaled battery info and i have buld infos. Battery temp. Is about 37°c but it feels like 50°c. Its located around the camera.
Is that normal? Does anybody else have that overheating issue?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
37C is normal. I've seen my battery go up to 46C before heavy throttling, but generally it sits around 35-42C depending on what it is I do. My thermal throttle starts when battery hits 40C.

krivinash said:
I wanted to start the topic about over heating.
My N4 is very hot when i use it normaly. I instaled battery info and i have buld infos. Battery temp. Is about 37°c but it feels like 50°c. Its located around the camera.
Is that normal? Does anybody else have that overheating issue?
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
overheating isnt an issue for the nexus 4. 37C is normal, the average human body temp is 37C. things "feel" hot on the back because the back is glass. its glass so that it can transfer heat out of the phone quicker. its safe for the battery to get near 60C and for the cpu to get to its cpu shutdown temp(95-100C).

I having the same problem playing ingress while plugged in and I notices the back screen protector shield i got on it has made the heat even worst but it protects it from getting scratched up. o well i guess i have to live with it or install custom kernel with uv and uc

Alicklee said:
I having the same problem playing ingress while plugged in and I notices the back screen protector shield i got on it has made the heat even worst but it protects it from getting scratched up. o well i guess i have to live with it or install custom kernel with uv and uc
Click to expand...
Click to collapse
while plugged in will get it hotter, plus the back screen protector will prevent heat from escaping..

yeah I know. i just debate if i should take the back protector off i mean i only really worried about the front of the screen. it just took some time to put it on
simms22 said:
while plugged in will get it hotter, plus the back screen protector will prevent heat from escaping..
Click to expand...
Click to collapse

Alicklee said:
yeah I know. i just debate if i should take the back protector off i mean i only really worried about the front of the screen. it just took some time to put it on
Click to expand...
Click to collapse
mines naked. the front screen is perfect, but the back glass has micro scratches. im not too worried about the back. the shimmering effect covers the scratches well

Both 37c and 50c are normal. You don't have an overheating problem and neither does anyone else on our forums. We reaaaally need a sticky about this. I'm not trying to be an ass about it, but this has been beaten to death. Just because the phone feels warm doesn't mean it's overheating.

username8611 said:
Both 37c and 50c are normal. You don't have an overheating problem and neither does anyone else on our forums. We reaaaally need a sticky about this
Click to expand...
Click to collapse
lol, yea. ive been fighting this fight for a while now, trying to educate and spread the word.

Heating problem (Not sure if I'm facing it)

My friend had told me that this one is likely to suffer from heating problem.
I've just bought one yesterday. The production information as follows; February 2013 in Korea.
Normally when it is connected to the usb cable for charging, no heat is observable. However, when I graph it and start using a little, like going through settings menu, checking the photos on album and stuff like that, its upper part gets a little warm. I mean it is not too hot to touch but you can tell the difference between the bottom and top of the phone. When playing games, the heat is much more perceivable.
The phone I was using before that one was a low level phone, so never ever faced such problem on it.
So, is this normal ? Or do I have to take the necessary actions and change it as I have the time to do so.
Or is there a certain way me to try if it is really defective or not ? Cause I can't be sure either I'm so picky or it is really defective.
Thanks in advance.

It's because of the glass. The phone doesn't produce any more heat than it should. In fact some phones run hotter. The glass conducts the heat and you feel it. There are probably 20 threads about this already. Please search next time.

estallings15 said:
It's because of the glass. The phone doesn't produce any more heat than it should. In fact some phones run hotter. The glass conducts the heat and you feel it. There are probably 20 threads about this already. Please search next time.
Click to expand...
Click to collapse
So, do you think that one I have, is not problematic ?

dango1 said:
So, do you think that one I have, is not problematic ?
Click to expand...
Click to collapse
That is what I'm saying, yes. The device will throttle the cpu to take care of the heat. Charging will produce more heat. This is all normal behavior. Stop worrying and enjoy your Nexus.

Is it normal for the N4 to run super hot?

I've had a N4 back around launch and although I recall of hearing people with problems of their N4s getting hot, I haven't noticed anything too bad.
Just got a N4 again recently, and during OS updates (I use CM), the back of the N4 gets so hot it can burn if I hold my finger at a specific spot.
I've heard of some fix a while back involving putting some kind of shim between the CPU and the piece of metal it sits near so it could use that as a heatsink basically; would this really help?

espionage724 said:
I've had a N4 back around launch and although I recall of hearing people with problems of their N4s getting hot, I haven't noticed anything too bad.
Just got a N4 again recently, and during OS updates (I use CM), the back of the N4 gets so hot it can burn if I hold my finger at a specific spot.
I've heard of some fix a while back involving putting some kind of shim between the CPU and the piece of metal it sits near so it could use that as a heatsink basically; would this really help?
Click to expand...
Click to collapse
Hi,
It will get hot when updating OS as after wiping of cache, all the apps are optimised again. During normal usage however it wont, as you'll use a custom kernel with setting a highest possible temperature. I usually leave my phone for a while to cool it down after updates and then use it.
You can put a thermal paste between body and cpu, this will spread heat better. Metal shim is a better conductor but can affect your GPS performance.
This lets your phone run cooler by a few degrees, but is it worth prying open your phone just for this?

espionage724 said:
I've had a N4 back around[......]
Click to expand...
Click to collapse
Yes, it is normal. Its CPU gets hot with medium-high usage, and the dissipation of the phone is not so good.
And Yes, applying a shim of copper with thermal paste as described here improves the situation! I did it some months ago, and I can assure you it still works. Moreover, if you manage to undervolt a bit, you'll notice that you'll not feel the back turning hot ever again! Since I did this, using my phone in 3g while I'm around is not a problem in terms of temperature anymore.

{Possible Fix} Overheat, bootloop issues? this may fix it forever!...

so..
i bought a G4 H812 canadian off Kijiji (our local buy and sell like craigs list kinda thing) $50 no battery stuck in HS-USB 9008.
invested another $22 in a battery from a friend. now total invested into a possible bricked device... $72.. not to bad, a risk yes... but i had luck and confidence!
excellent screen scratch wise but had delamination all around the screen (see pic 1)
so with a half charged new battery, a possible bricked g4, and some previous knowledge and repair skills, i went to work.
tried QPST... nadda. tried LGUP... nadda. tried lg flashtool... guess what.. yup.. nothing... felt like friends repair shop was last left option...
but im a scrooge, and determined
so i took to youtube and google, found out it may have been one of a possible recall phones that had the thermal bootloop issue or emmc failure..
grabbed my custom heatgun and blasted it at 275 for 3min.. 3" away in circle patterns, just like most unbrick guides.. and left it cool for 30min.
put it back together and powered on to find it boot just fine not needing no relfash, had a pattern lock, contacted original owner the seller, got lock off,
wiped personals and internal storage, and found it was on 6.0.1... DAMN... no root possible.
go to downgrade and it doesnt, error's out before can even do anything, i forget, com41 change required...
so go to reboot and it stops booting again, but really warm... overheat issue again...
repeat the process many times trying to get to usable home screen as it would just keep freezing.. so i really examined all the phones parts and noticed... pic2 this really crappy black thermal tape, right where the main emmc and cpu is... kinda silly for such a heat hog i thinks.. so looking at the rf shield on phone where cpu is they also have this really ****ty goldish shield tape that on the reverse side is plasticy feeling.. not good for thermals i think.. so i tore it off, and removed that black thermal tape, cleaned top of cpu, heatgunned again this time at 300 for 2 1/2min. 2.5" away circulars, twice, 30 min cooldowns between.
took a light blue 1mm thick heatpad i found from a ddr3 ram stick heatshield, cut it to shape of cpu, and placed on top, also placed a piece on the slightly smaller black chip to the upper left of cpu, and also on the what i believe to be the power control ic on the opposite side of board, so that all possible sources of higher heat had thermal pads and better conductivity.
placed phone all back together, screwed all screws finger tight, placed sim card and sd and battery, back cover.. and hoped to god.. press power..
boots up nice and quick, hot at first after a factory wipe in recovery, like kinda scary hot at first then slowly cools...
its been running for almost 2 days now.. no slowdowns, no sluggish, does get warm when charging as expected.
but so far, ive been able to use sixaxis controller app, my ps3 controller, moonlight for root, and stream wildlands from my pc for almost 2 hrs,
charge up a bit, play Bully and run 3dmark for a while, and while it does get warm, its not near as bad as it used to be, i think something went right this time
its almost upon its 3rd full day of use without bootloop or overheat, mind u i am also using v4 CTT cpu mod
have xposed installed and root on 5.1 and am happy its still running so far.
so yeah, if this continues to run ill keep updating post when and if something happens to the device..
if it keeps running every two days ill update, and then this may just be a way to self fix the overheat bootloop cpu issues most of us have face i bet!
if you try this, let me know if it works for you.. id be happy to know im not the only one

I'm glad you got it working! Yeah this has been brought up here before on getting it working or putting in the oven etc lol. But it will eventually fail again there's no complete fix sadly. But hope it lasts you long I loved the G4 but the boot loop issues really gave it a bad rap.
Sent from my iPhone using Tapatalk

Will follow this, keep us updated !!

I have done this already and I can assure you it's won't last. Nice work but you are being too optimistic. Without going into too much detail, the problem with the soc will slowly get worse the more you use the phone and putting heatsinks only slows down the rate at which it gets worse and does't stop it altogether. You haven't fixed the underlying issue. That's why it will fail again eventually.

My lg g4 had bootlooped issue too. Everything I did didn't solved the problem . From freezer to oven , and disabling two big core to remaining in only one core the device bootlooped everytime. Now what I did was : First I opened a device , remove the upper golden colour cover enclosing the processor, put some thin paper covering both processor and ram. Then put everything on their respective place. Then I turned a device it booted up. Downgraded to lollipop , disabled the big core using .tot method , rooted my LG G4 and enabled four core using free app by stojshic (Kudos to him: https://forum.xda-developers.com/g4/themes-apps/root-4-cores-activator-t3538175) . The device is working fine since week . I've restarted the device many times to check whether I will get bootloop again, played games like clash of royale for 2 hours etc. The device is working fine with less heating. The main culprit is I guess golden cover shield which is worsening overheating issue . The CPU generates heat and the cover shield is increasing thermal cycle . If by any means a thin better insulator is kept between the CPU and covering shield, this may solve the bootloop problem

georgemb said:
My lg g4 had bootlooped issue too. Everything I did didn't solved the problem . From freezer to oven , and disabling two big core to remaining in only one core the device bootlooped everytime. Now what I did was : First I opened a device , remove the upper golden colour cover enclosing the processor, put some thin paper covering both processor and ram. Then put everything on their respective place. Then I turned a device it booted up. Downgraded to lollipop , disabled the big core using .tot method , rooted my LG G4 and enabled four core using free app by stojshic (Kudos to him: https://forum.xda-developers.com/g4/themes-apps/root-4-cores-activator-t3538175) . The device is working fine since week . I've restarted the device many times to check whether I will get bootloop again, played games like clash of royale for 2 hours etc. The device is working fine with less heating. The main culprit is I guess golden cover shield which is worsening overheating issue . The CPU generates heat and the cover shield is increasing thermal cycle . If by any means a thin better insulator is kept between the CPU and covering shield, this may solve the bootloop problem
Click to expand...
Click to collapse
Yes but the the heat of the phone when your playing games and booting up will still effect the soc to get worse over time, just at a slower rate. Its not a case of "if it does't reach a certain temp it will be fine". It's a case of "the more heat the quicker it will bootloop, the less heat the slower it will take to bootloop" but either way it will get there eventually as the problem gets worse over time.

Any recommendations?
Can anyone recommend a copper heat tape (or something better) that would work to get my phone running again? It's overheating and therefore bootlooping, so I am curious if there is any specific things to look for or stay away from when buying something to fix this, however temporary it may be.

Copper is better conductor of heat .. So it will work as heat sink ..U can put thermal paste in between CPU and copper tape..
Check it out
youtu.be/G3dQdS1b0aw
Try it and report back

tnap1979 said:
so..
i bought a G4 H812 canadian off Kijiji (our local buy and sell like craigs list kinda thing) $50 no battery stuck in HS-USB 9008.
invested another $22 in a battery from a friend. now total invested into a possible bricked device... $72.. not to bad, a risk yes... but i had luck and confidence!
excellent screen scratch wise but had delamination all around the screen (see pic 1)
so with a half charged new battery, a possible bricked g4, and some previous knowledge and repair skills, i went to work.
tried QPST... nadda. tried LGUP... nadda. tried lg flashtool... guess what.. yup.. nothing... felt like friends repair shop was last left option...
but im a scrooge, and determined
so i took to youtube and google, found out it may have been one of a possible recall phones that had the thermal bootloop issue or emmc failure..
grabbed my custom heatgun and blasted it at 275 for 3min.. 3" away in circle patterns, just like most unbrick guides.. and left it cool for 30min.
put it back together and powered on to find it boot just fine not needing no relfash, had a pattern lock, contacted original owner the seller, got lock off,
wiped personals and internal storage, and found it was on 6.0.1... DAMN... no root possible.
go to downgrade and it doesnt, error's out before can even do anything, i forget, com41 change required...
so go to reboot and it stops booting again, but really warm... overheat issue again...
repeat the process many times trying to get to usable home screen as it would just keep freezing.. so i really examined all the phones parts and noticed... pic2 this really crappy black thermal tape, right where the main emmc and cpu is... kinda silly for such a heat hog i thinks.. so looking at the rf shield on phone where cpu is they also have this really ****ty goldish shield tape that on the reverse side is plasticy feeling.. not good for thermals i think.. so i tore it off, and removed that black thermal tape, cleaned top of cpu, heatgunned again this time at 300 for 2 1/2min. 2.5" away circulars, twice, 30 min cooldowns between.
took a light blue 1mm thick heatpad i found from a ddr3 ram stick heatshield, cut it to shape of cpu, and placed on top, also placed a piece on the slightly smaller black chip to the upper left of cpu, and also on the what i believe to be the power control ic on the opposite side of board, so that all possible sources of higher heat had thermal pads and better conductivity.
placed phone all back together, screwed all screws finger tight, placed sim card and sd and battery, back cover.. and hoped to god.. press power..
boots up nice and quick, hot at first after a factory wipe in recovery, like kinda scary hot at first then slowly cools...
its been running for almost 2 days now.. no slowdowns, no sluggish, does get warm when charging as expected.
but so far, ive been able to use sixaxis controller app, my ps3 controller, moonlight for root, and stream wildlands from my pc for almost 2 hrs,
charge up a bit, play Bully and run 3dmark for a while, and while it does get warm, its not near as bad as it used to be, i think something went right this time
its almost upon its 3rd full day of use without bootloop or overheat, mind u i am also using v4 CTT cpu mod
have xposed installed and root on 5.1 and am happy its still running so far.
so yeah, if this continues to run ill keep updating post when and if something happens to the device..
if it keeps running every two days ill update, and then this may just be a way to self fix the overheat bootloop cpu issues most of us have face i bet!
if you try this, let me know if it works for you.. id be happy to know im not the only one
Click to expand...
Click to collapse
Can anyone recommend a copper heat tape (or something better) that would work to get my phone running again? It's overheating and therefore bootlooping, so I am curious if there is any specific things to look for or stay away from when buying something to fix this, however temporary it may be.

@ezzony was right, mine finally took a permanent dump last week after 3 more reheat attempts since last post, but it atleast lasted this long..
now im on a heavily modified Huawei Nova Plus converted from a MLA-L03 to a CAN-L11 software wise, so i could get perfect rooted Lineage OS 13 on it and xposed
i miss the camera of the g4 so much...
i still have my dead board Note 4, note 4 edge also dead board, and lg g4 dead board, all cause of same problems SOC overheats
seems like it was a common problem amongst tons of models too.... sad that we the paying customer get shoddy manufactured devices that we end up paying so much for...

georgemb said:
Copper is better conductor of heat .. So it will work as heat sink ..U can put thermal paste in between CPU and copper tape..
Check it out
youtu.be/G3dQdS1b0aw
Try it and report back
Click to expand...
Click to collapse
Thanks a bunch! That's the exact video I've been watching and the most helpful too. I am just not sure if there are different sizes in thickness that are more conducive or not. Also, are there different strengths of copper to resist higher temperatures? I'm learning all of this through google, so I'm sure I sound as savvy as I am with technology.

tnap1979 said:
@ezzony was right, mine finally took a permanent dump last week after 3 more reheat attempts since last post, but it atleast lasted this long..
now im on a heavily modified Huawei Nova Plus converted from a MLA-L03 to a CAN-L11 software wise, so i could get perfect rooted Lineage OS 13 on it and xposed
i miss the camera of the g4 so much...
i still have my dead board Note 4, note 4 edge also dead board, and lg g4 dead board, all cause of same problems SOC overheats
seems like it was a common problem amongst tons of models too.... sad that we the paying customer get shoddy manufactured devices that we end up paying so much for...
Click to expand...
Click to collapse
Sorry to hear that, but yes I feel every G4 will suffer the same fate as in your case. Once it starts it won't keep running forever.
Yes the camera is awesome. The no.1 reason I love the G4 and no.2 reason is the textured leather curved back cover which makes holding the G4 very easy in the hand to manage, as it is a big phone. I was going to go with the G5 when my G4 died as it has the same camera but I really don't think it's as special as the G4. I picked up a new secondhand G4 with a serial number of 701 so I'm hoping the fault has been resolved in the newer version.
I'm not totally optimistic it wont suffer from the same problem in time though as I do feel it gets very hot that one can feel on the back cover . And the heatsink over the soc is virtually non existent in comparison to a Galaxy S6 I owned briefly which had a much more capable heat sink on it. I'm hoping the heatsink is not the problem and it was purely the chip itself, but I don't know for sure. I stuck a copper shim on the soc with some thermal paste anyway just in case, couldn't hurt.
I'd suggest to anyone who like me loves the G4 then picking up a newer version with a serial number of 701 or above might not be a bad idea instead of messing around with a clearly faulty one that will fail on you possibly at a highly inconvenient moment.

tnap1979 said:
so..
i bought a G4 H812 canadian off Kijiji (our local buy and sell like craigs list kinda thing) $50 no battery stuck in HS-USB 9008.
invested another $22 in a battery from a friend. now total invested into a possible bricked device... $72.. not to bad, a risk yes... but i had luck and confidence!
excellent screen scratch wise but had delamination all around the screen (see pic 1)
so with a half charged new battery, a possible bricked g4, and some previous knowledge and repair skills, i went to work.
tried QPST... nadda. tried LGUP... nadda. tried lg flashtool... guess what.. yup.. nothing... felt like friends repair shop was last left option...
but im a scrooge, and determined
so i took to youtube and google, found out it may have been one of a possible recall phones that had the thermal bootloop issue or emmc failure..
grabbed my custom heatgun and blasted it at 275 for 3min.. 3" away in circle patterns, just like most unbrick guides.. and left it cool for 30min.
put it back together and powered on to find it boot just fine not needing no relfash, had a pattern lock, contacted original owner the seller, got lock off,
wiped personals and internal storage, and found it was on 6.0.1... DAMN... no root possible.
go to downgrade and it doesnt, error's out before can even do anything, i forget, com41 change required...
so go to reboot and it stops booting again, but really warm... overheat issue again...
repeat the process many times trying to get to usable home screen as it would just keep freezing.. so i really examined all the phones parts and noticed... pic2 this really crappy black thermal tape, right where the main emmc and cpu is... kinda silly for such a heat hog i thinks.. so looking at the rf shield on phone where cpu is they also have this really ****ty goldish shield tape that on the reverse side is plasticy feeling.. not good for thermals i think.. so i tore it off, and removed that black thermal tape, cleaned top of cpu, heatgunned again this time at 300 for 2 1/2min. 2.5" away circulars, twice, 30 min cooldowns between.
took a light blue 1mm thick heatpad i found from a ddr3 ram stick heatshield, cut it to shape of cpu, and placed on top, also placed a piece on the slightly smaller black chip to the upper left of cpu, and also on the what i believe to be the power control ic on the opposite side of board, so that all possible sources of higher heat had thermal pads and better conductivity.
placed phone all back together, screwed all screws finger tight, placed sim card and sd and battery, back cover.. and hoped to god.. press power..
boots up nice and quick, hot at first after a factory wipe in recovery, like kinda scary hot at first then slowly cools...
its been running for almost 2 days now.. no slowdowns, no sluggish, does get warm when charging as expected.
but so far, ive been able to use sixaxis controller app, my ps3 controller, moonlight for root, and stream wildlands from my pc for almost 2 hrs,
charge up a bit, play Bully and run 3dmark for a while, and while it does get warm, its not near as bad as it used to be, i think something went right this time
its almost upon its 3rd full day of use without bootloop or overheat, mind u i am also using v4 CTT cpu mod
have xposed installed and root on 5.1 and am happy its still running so far.
so yeah, if this continues to run ill keep updating post when and if something happens to the device..
if it keeps running every two days ill update, and then this may just be a way to self fix the overheat bootloop cpu issues most of us have face i bet!
if you try this, let me know if it works for you.. id be happy to know im not the only one
Click to expand...
Click to collapse
It has been six months, does your lg g4 still working?