yashsingh1/xdaforums huggingface dataset:
[G3 General] leots:
I just did this mod today with an Arctic thermal pad (1mm thick) and it was a bit of a failure... With the thermal pad, while the temps were better, when I pressed the display with my finger around the area where the CPU is, there were a lot of ripples (that I never noticed before) and some spots were turning gray for about a second before going back to normal. I assume that the thermal pad was pressing the back of the display, so when I pressed the display the glass was touching the LCD.

I experimented with loosening the screws on the back of the phone and it seemed to help a little but it was never completely gone.

Also before this, when I applied the thermal pad I was worried about it fitting in there so I pressed it with my fingers a bit to make it more flat. I don't know if it helped with the fit but I though I'd mention it here...

In the end I removed the thermal pad and now my display is back to normal again, I have to press pretty hard on it to get it to ripple, and the ripples are a lot less visible (and no gray spots at all).

Do you guys who did this with 1mm thermal pads and some even with 1mm metal shims not have this problem? You'd think it would be a lot worse with a metal shim of the same 1mm thickness because it's not flexible like a thermal pad :/
[G3 General] Eun-Hjzjined:
I've looked at my phone and I've got the shielding all around the block.

I can also say I've got far less than 1mm gap there.

It's more likely between 0.5mm and 0.7mm.

Maybe [MENTION=4594069]leots[/MENTION] should try with some slimmer pads.

I've found 100x100x0.5mm thermal conductive pads on eBay starting at a couple bucks.
[G3 General] Eun-Hjzjined:
My local computer repair shop had some "phase change" thermal pads so I decided to try them.

Not bad so far. Ran through a few runs (5) in antutu to give it a burn in.

Running a full 12°c to 15°c cooler than before and I have no noticeable screen heat up or "pressure ripples" or yellowing.

Average use (music/browsing/calls) temps
[G3 General] jbehler:
I did the hardware mod with my g3 and got good results.

CPU-Z says that my idle temperature is 35-40 °C

and temperatur under load 45-55°C.

Before the mod I had a idle temprature above 50°C, not to mention the high temperature under load.

At first I used a copper pad 0.8mm but since I had a bad gps-signal afterwards I changed it to thermal paste only.

I was able to fix the gps-signal only by bending some of the connection pins on the motherboard so they would have a connection to the antenna part again.

However great this mod works, Antutu scores were still bad (< 30000)

I fixed this issue by replacing my original battery with a battery from powercell.

Now everything works just fine.

(Antutu scores up to 44000)

Also battery live has been improved. I can now easily unplugg my phone in the evening and use it with a screen time around 3 hours for the whole day.

Pc Mark claims 5h30min on screen time.

I'm now wondering if the broken battery was the problem all along...

Anyway amazing mod! Thanks for charing!
[G3 General] zincoo:
Where did you tweak the pins?

I was able to fix the gps-signal only by bending some of the connection pins on the motherboard so they would have a connection to the antenna part again.

-----------------------

I am having trouble with the bad GPS signal after hardware mode. Can you share which pins you tweak to get it to touch the antenna again? If you can post some photos, that would help for sure. Thank you
[G3 General] dadi11:
the funny thing is my battery has 45c when I'm charning

Sent from LG G3
[G3 General] trips555:
An important note, that I'm not sure is posted here: adding copper shim had the potential to interfere with gps. I did it and it dropped my gps a ton. Removed it and just did thermal paste and the gps went back to normal. Just a consideration for those looking to try this.
[G3 General] Kigsuha:
finally applied mx-4 thermal paste to my g3 and first boot, temp dropped by 10-15°C, now after 2-3 days, temps drops only by 5-10°C...

edit: same situation sometimes 40-45, sometimes 45-50°, sometimes 50-55°C

why is it like this ?
[G3 General] as.corazon.noble:
I used a silicon pad (looks like jelly) and mx-2 paste for a D855. Idle is now 35-40°C.

There are no signal or screen issues after one day of use.
[G3 General] TheDainCalleh:
This is my first post on XDA :D

Thanks a ton for this. I'm actually getting temperatures as high as 90 degrees Celsius and i idle at around 58. I will definitely be doing this. I am also building a flip case with a fan and heatsink that goeas across the screen seeing as the screen is used as a heat sink to bleed off most of the heat.
[G3 General] theoverfiend:
Fan in case? This sounds really strange but interesting too :sly: How will it powerd? What happens when it's blockt by some stuff in the pocket?

But keep trying and let us see the results... :thumbup:
[G3 General] TheDainCalleh:
LG G3 Cooling (and Pentesting) Mod

Heres a dumb mockup that I originally posted on instagram. My focus was on the cooling. The reason for that was because I once fell asleep with the phone under my pillow, before I did any hard mods. When I got up the next morning the phone was so hot that I couldn't even hold it for longer than about half a second. It was burning me and could have even injured me.

This is a proof of concept mockup for an android pentesting rig intended for the LG G3. This is a folio style flip case for your phone. With external Wi-Fi for monitor mode with charging and cooling. This specific wifi dongle doesnt work with my phone. There is one that does work, and I will have to source it and ship it in if i want to complete this project.

I wanted to include a powered USB hub with simultaneous charging, but I guess that can only be accomplished with a Nexus device.

Now that the thermal paste hardmod is completed I havent had any temperature related problems. The folio case cooling will only work when it is closed, as it draws heat through the screen. (not the brightest of ideas, pardon the pun.)

It is incredibly bulky, but I don't really care about that at right now. I just want it to work. And to answer the question about how the fan would work inside your pocket - it won't. I actually completely forgot about that. Perhaps there's a way to mount the fan at an angle, so that it pulls air in and pushes it out throught the pocket opening, like a turbocharger in a car. It is powered by a 3 cell LiPo - the kind used in RC aircraft. This is connected to a UBEC, that converts the 11.1V output down to 5V at 3A, which I hope wont result in an exploding phone. A more powerful UBEC with a higher amperage can be used to support other peripherals on a powered USB hub. Before the conversion takes place, the fan is connected to the 11.1V output. The battery is a 1300mAh battery.

Because I am still a new user, I can't yet post outside links. But heres where my proof of concept pic is at:

i.imgur.com/p5dG3S3.jpg

The metal casing is cut from a PC tower.

The UBEC is a hexTronik UBEC with 5/6V output @ 3A

The wifi dongle is connected to an OTG cable.

The fan and heatsink is from a very old graphics card, which needs to be fastened to the metal case with some thermal paste inbetween.

The top cover, which is a piece of sheet metal has been ommitted from the picture. It has a hole in it to let the fan do its job.
[G3 General] svcr0c0:
You would be amazed at the glaring problems companies put out in their devices due to costs associated with fixing them. If the cost of replacing failed phones under warranty is less than the cost of adding the cooling to the device, nothing happens. And from what I read, very few G3's actually fail, they simply perform poorly

A few examples? Nokia's last good phone, the n900 had a USB port that would fall off the board. Nvidia put out two broken generations of cards with a known soldering defect. GM sold cars with known faulty ignitions. Etc.

That said, I just did the mod with nonconductive paste, and I can feel the phone getting less hot. Even if the chip we apply the paste is the ram, not the CPU as someone else mentioned, it can still contribute to the ambient temp inside the phone.
[G3 General] vodred:
I did it and all my benchmarks in raw are the same on cloudy 2.5 unlike before
[G3 General] gado45:
Done this mod with thermal paste and I can clearly feel the processor being more snappy (a lot more indeed), but there's still heat on the front side of the phone and it's still akward when using for calls, having that heat on your ears.

Could this be caused by my tempered glass screen protector? like glass is grabbing all the heat of the lcd ?
[G3 General] motoralbi:
No,that should be the SoC. RAM should be only a part of that,so with thermal paste you cool everything at one time(cpu,gpu,ram and everything else)

Inviato dal mio GT-S7560M con Tapatalk 2
[G3 General] FreeeMans20:
I see a lot of people worried about the paste running through their phones! Lads, it's not the case! In case you don't know, thermal pastes are not electrically conductive! So no matter how much you put in there, the phone will work just fine... It'll just be very dirty. And again, thermal paste will not drip as in time, it actually dries and gets pretty hard! I've seen lads putting to much paste between their CPU and cooler. That paste eventually ended up on top and between the capacitors on the MOBO. No problems there! So chill! I'm actually planing on doing this tomorrow when I get home! Seems like a bulletproof MOD!
[G3 General] gondia:
I did it and my volume up key stopped working

please help me

thanks
[G3 General] Dene_Bluesman:
make sure the ribbon connectors are seated properly
[G3 General] gondia:
all the connectors seated properly, I check two times

I clean the connectors with alcohol and just the up key don't working
[G3 General] AlwaysLucky:
What size was the 1mm pad cut to that you used? 15mm x 15mm?

Also, is anyone else experiencing this issue as well? If so, how bad is the ripple effect? And what method was used? (Copper + paste OR pad)
[G3 General] leots:
I guess it was about 15x15 mm, I cut it to be a little smaller than the chip on the phone so it definitely wasn't too large or anything like that..
[G3 General] jeffyzefrench:
Did you have any app running when you took the cpuz temps? Cuz my G3, without anything running in the background, no thermal paste, doesn't exceed 42C. If you were doing the same as me, it doesn't look very impressive. Otherwise, it is I guess.
[G3 General] xilol:
Actually metalic (silver) based thermal paste is electrically conductive. So don't generalise it. To mod it, you should look at the properties of the paste you are using. You can also use an adhesive thermal pad if you can get one of the correct size, specially thickness.

Enviado do meu LG-D855 através de Tapatalk
[G3 General] Psycho_Crazy:
Done this mod today. My idle temp is higher then before...almost 7º higher!!!
[G3 General] arebokert:
I've had my copper shim for about 2 months now and I am happy with it. Still very good temps. No issues at all.
[G3 General] AlwaysLucky:
This result in in contrast to all these other positive results. Could you provide details on the failure? (method, benchmarks before/after, phone model, etc, etc)
[G3 General] Psycho_Crazy:
Man, nevermind! I was using a bad quality thermal past.

Temp is ok now...using deepcool thermal past.

Sorry guys!
[G3 General] gado45:
Hey guys sorry to report that Im having overheating after two weeks using this mod. When I play any game I get extreme temps (it feels a Lot on the back side, CPU area) and my phone ends up rebooting
[G3 General] sgrabarz16:
Awesome idea.. My phone burns up whenever I use video calling or play games. I will definitely try this soon. Thanks!
[G3 General] AlwaysLucky:
Success with Arctic thermal pad

I just wanted to report another fantastic success. I'm now at the 3 week mark. I used a 1mm thick thermal pad from ebay.

I cut it to 13x13mm and pre-compressed it lightly with two flat glass objects. The pad expanded slightly when pressed to just under the 15x15mm size of the chip.

If using a pad I recommend doing this because you do not want any of the pad touching the surrounding aluminum casing around the chip on the board; thus transferring heat back to the board. Also, pre-compressing it allows you to see what size it will expand to.

There was a 15 degree C drop during idle, and 10 degree C drop under load. Amazing! Three weeks later and I could not be happier with the results.

I recommend using a 1mm pad instead of the paste/shims method for multiple reasons:

- You can cut to fit to the exact surface area with no mess

- Avoid what some people have reported as a GPS signal drop, due to no copper or other metallic substances being present in the thermal pad (most)

- Unlike thermal paste that hardens like a rock, a pad stays gooey while hot allowing your screen to flex slightly and avoid "rainbow spots"

- The thermal conductivity (in my case, 6W/mK) of a thermal pad is way more than sufficient for a phone processor; especially since the thin metal frame in the phone has very little mass, and was not intended to be a heat sink anyways

Well, I hope this helps others. I am now going to do this on my GF's G3 due to this awesome success. Thanks to all those who posted their results as well. If anyone has any questions about what I did, feel free to ask. :)
[G3 General] daniLaLaLaLaLa:
Does heating problem only occur in some devices only or all G3 have this problem?

i'm would like to put this thermal pad on my G3 to make it always great and awesome device to use since i'll love it

but i quite confuse here since my phone doesn't get extreme hot unless i played COC for an hour straight.

btw here's the temperature for my LG G3 F400L korean variant with stock Android 5.0..

i don't even understand what it say but i see it state is in between 31 to 42 degree celcius

and is it normal for you guys? should i get thermal pad on it?
[G3 General] AlwaysLucky:
I'm not familiar with the hardware differences between the F400L and the US versions, but those look like good idle temps to me. Keep in mind, the main reason most people decide to do this is because the CPU speed is throttled down as it gets hot under load by the OS. It will also get hot to the touch on the back near the camera; or even near the top of the screen.

If you're not experiencing any slowdowns or stuttering, nor do you feel like its getting hot to the touch, I would not bother with this mod. If you're seriously interested, put the phone under heavy load for about 10 minutes and check the temps again. Optimally, You want the temps to stay in the 55-65 degree C range under load.

---------- Post added at 10:10 PM ---------- Previous post was at 09:40 PM ----------

Those are whats known as "idle" temps. And yes that's normal. Because the OS will throttle down the CPU speed as it gets hot under load, the temps that really matter are those under heavy load (ie 100% CPU usage). Put your G3 under heavy load for about 10-15 minutes and get back to us. :D
[G3 General] JuannTwo3:
I did this mod about 1.5 weeks ago and it has been noticeable. Before, when doing intensive tasks, the phone would get considerably hot. Now at most it gets slightly warm. I haven't been keeping track of exact temps as I wanted to see if I could actually tell the difference by feel over an extended period of time
[G3 General] liamR:
You forgetting the warranty. I had to return my G3 for under warranty fix (microphone crack) and it took me less than 5 minutes to remove the thermal pad without leaving any trace :). When I got the device back it took me 10 minutes to put a new pad in. Now I get even better results than before :victory:
[G3 General] ps000000:
Oh I use Prolimatech PK1 (I am normally use with my PC CPU's waterblock.).

It work great !!!:good::good::good:
[G3 General] Ariac Konrel:
I used the Arctic thermal pad myself and it's been working wonders!
[G3 General] OoSTARTERoO:
It works like magic....thanks!!!
[G3 General] nisantm:
Has anyone tried this on F400 yet? I want to do this but someone did on their F460 and the internals are different.

And thank you for this mod
[G3 General] justyourimage:
After all I still think I'll try to go with 0.5mm Pads (sometimes less is more) .. however I'm not sure, has anyone tried yet?

Edit:

There 's also a 0.5mm variant out there of the same pad:

http://www.ebay.de/itm/Arctic-Cooli...244252?hash=item1c5ad8d5dc:g:ojsAAOSw~bFWF~w2

Edit 2:

And theres an 11W/mK Thermal Pad at 0.5mm from another manufacturer (Alphacool Eisschicht) here:

http://www.ebay.de/itm/Alphacool-0-...t-11W-mk-Sarcon-XR-e-ThermalPad-/121744127054

with a Review:

http://www.overclock.net/t/1569756/alphacool-eisschicht-thermal-pads-kraken-g10-review

(and to add to that: copper has a thermal conductivity of ~385W/mK)

Edit 3:

I've gone with 0.5mm Artic like posted above and it works like a charm for me. I'd guess 1mm would be a bit to much but both should work depending on the individual case.
[G3 General] nisantm:
Since I did not get answer from my question anywhere (if i can do this on F400), i had to find out myself.

I was able to do it but only using thermal compound. Temps went down 10 degrees whether idle or gaming. Thanks for sharing this mod.

One question though, the screen seems to get warmer than it was before. Is this bad? Anybody experienced lcd issues in the long run?
[G3 General] Abaddon:
hi, you applied the paste only?I bought a deepcool one too but haven't put it yet
[G3 General] Psycho_Crazy:
Yes, only thermal paste.
[G3 General] nuridurdu27:
Have anyone ideas how i can guide the heat that the processor produce to the bottom half of the phone because only the upper half gets hot . i use the copper shim with paste mode it works pretty well with a antutu benchmark point of 44k but the bottom half stays cool ?
[G3 General] TUiZ:
Applied some paste to my G3, temperature dropped nicely. Can only be good running cooler, haven't noticed any increase of heat anywhere else but I will wait and see.
[G3 General] Juanfra01:
Did you go with the fujipoly 1mm 17w/mk thermal pad after all? Did you use 1mm or 0.5mm? Does it stay firm even tought it doesn't have glue? I need to know if it has nice results because it is the only one i can gen in my country.
[G3 General] justyourimage:
How should the heat proceed to the bottom part if the metalframe only resides in the upper half? In addition to that - hot air rises unless there 's a customized (unoptimal) airflow (which is nearly impossible with passive cooling) and not the other way around. TLDR:

You can't (unless you're heavily modifying your phone 's internals and dont ask me how to do that for real)
[G3 General] nuridurdu27:
ok
[G3 General] 8vasa8:
Hey guys I have Cooper shim on my cpu. But I Have really long loading of data for example between edge and 4g. Is it possible that the Cooper shim do this? I must wait like 20 seconds or some. And it's really annoying...

Odesláno z mého LG-D855
[G3 General] AlwaysLucky:
I measured the gap between the SoC and the metal frame at about ~.6mm. I have read other people have had success with a .5mm thick pad, but I strongly recommend using a 1mm thick thermal pad, and pre-pressing it to about .7mm. Also, as I mentioned in a previous reply, be sure to cut the pad to about 90% of the size of the chip to prevent any part of the pad making contact with any of the the surrounding components or casing.

Regarding the W/MK rating of a thermal pad:

In desktop GPU & CPU applications and other very hot applications, the W/MK of a thermal pad makes a huge difference because you are dealing with a much higher output of heat that therefore needs to be transferred as quickly as possible to the heatsink. However this is not the case for our SoC (Snapdragon 801 8974-AC) in our G3; the issue is heat buildup. The SoC does not produce heat fast enough for the W/MK rating of a thermal pad to make a difference of more than a half of a degree (I did the math). With a way for the heat to escape (at any W/MK) for this SoC, that's all it needed. Think of it like a drippy faucet with a clogged drain. Opening the drain a millimeter, or opening the drain a meter, both have the same effect on allowing that drippy faucet to drain. The same applies to the thermal paste & shim method. It's simply overkill. Go with any thermal pad because they stay gooey when hot, and refer to my earlier post regarding tips on the install.

In this particular case, the ol' K.I.S.S. acronym comes into play...

Hope that helps you. :)
[G3 General] Juanfra01:
Thank you very much for your answer. So you don't think I should worry about the stickiness of the thermal pad?
[G3 General] AlwaysLucky:
No, you should not worry about the pad getting gooey. It gets gooey when it gets hot, and that's good for maintaining pad contact and screen flex at the same time. Make sure to get a pad without any metallic ingredients.

If you are worried about removal of the pad in the future, don't be. Removal is usually very easy with a knife and some alcohol.
[G3 General] ads2801:
I use The thermal paste for the LG G3 but the temperature is too hot...

[IMG="Thermal sensors, try see on top"]https://i.gyazo.com/8d6d23d4b2a92f24d14e042e0f5b259a.png[/IMG]

73ºC around. See top temperature.​

UPDATE: Now looks like the thermal paste is doing a good job. I'm charging the phone and around 50ºC upping, but not more than 60ºC

[IMG="Thermal sensors"]https://i.gyazo.com/e5a1d60b7d751380ea16fac64162f3c7.png[/IMG]​

Hopefully this goes with games and with extreme use.

Sorry for my bad english. I try to improve this.
[G3 General] ads2801:
I want post a little tutorial for do it by yourself. Due to I don't have LG G3 working -obviously- I took the photos with old smartphone: Motorola Defy+, but you could see perfectly. Sorry my bad english, I try the best :p :o

Remove all screws in the back and keep safe. When you do it, you see the motherboard, something like that

[IMG="motherboard"]https://i.imgur.com/w06Ckwf.jpg[/IMG]

Remove all connectors: camera, microphone -top- and others connectors you can see

Keep calm, be patient and with something with little tip pry the motherboard. Now, separate from plastic cover. Be carefully.

Locate the top of the motherboard and flip it.

You will see your Snapdragon 801 core in the middle. I don't take photo about, before apply thermal paste, so sorry.

[IMG="core"]https://i.imgur.com/qxu9XsT.jpg[/IMG]

Like you see in the photo, apply thermal paste.

Be patient applying thermal paste, an excesive thermal paste can be worst.

After these steps, you only need assembly again the LG G3. Put all screws in their holes.

Then, put battery and try to turn on phone

Like you are seing, the LG G3 goes perfectly.

Now, we're going to test CPU temp and other temps. I use AIDA64, Kernel Adiutor, CPU-Z and other. Now I use Aida64 for Android -obviously-

​

To prevent, try to test camera, microphone, speaker etc. if it is poorly connected.

Thanks and sorry again for my bad english.
[G3 General] ads2801:
I do best tutorial in spanish here: http://www.htcmania.com/showthread.php?p=21256197#post21256197

If you don't know spanish, use Google Translator XDDDD
[G3 General] AlwaysLucky:
After modifying two G3's and performing an abundance of research into this, I strongly recommend using a thermal pad, not thermal paste.

And while I'm sure your efforts are appreciated, tutorials for G3 disassembly are plentiful. I think your tutorial might've been more fitting as an original post, rather than a reply to an existing post. :)
[G3 General] ads2801:
Well, thanks. The reason due to I don't do a OP is because I didn't think about, it was improvised, wiht no plan. So sorry, but if you like, I cant copy and paste the same code to an OP and do it for the community. Thanks again.

---------- Post added at 06:27 PM ---------- Previous post was at 06:06 PM ----------

Your orders have been heard. I just made and individually post, not an answer, and I modified some things. Good King.
[G3 General] topet2k12001:
Hi Friends,

I see there is more than one thread about the said topic. I posted on the other thread and would like to share my experience. My post can be found here (click me!).

Original post below, hidden (for those lazy to click on links, hehehe)