[LG Optimus 4X HD] ottomanhero:
So I was using my friend's Iphone 5 today.I did some heavy gaming and his phone was transfering heat to all areas of the phone equally, making the chipset get rid of heat easily.If you played some games with 4x hd you'll notice

only a part of it gets hot

, the part below LG logo at back cover.

So I thought 'why not' and tried to transfer heat equally around the back cover.Had a simple but 'can be effective' idea.Surprisingly this worked greatly and I could feel the heat even at the sides of the phone.

So here is what I did:

The image pretty much describes it.I used aluminum foil to direct the heat from hot areas to cooler areas.While it sounds too easy it works like magic.

Note that I cut off the connection between the top and bottom aluminum foil so that chipset wouldn't heat the battery up.

(işlemci sıcaklığı = CPU temp and pil sıcaklığı = battery temp.)

No matter what I've done I couldn't get the cpu temperature to go above 60 until I did an antutu stability test and it was around 65 C in the end of the testing and quickly descended to 50 in a matter of seconds.

This screenshot was taken when I had a download of 4~ gb size and phone was just plugged off from charger (all this heats up the battery) so expect battery temperature lower than 40 C in normal usage. (37 ish in my case)

FAQ

Any side effects?

GPS

Did my own tests and while it does not block the signal completly, it weakens them...

With this new method there are no side effects, gps works as perfectly as it would normally and any "possible" (no one reported it so far) cell signal problems are solved aswell.

GPS signal without foil : http://puu.sh/dvF9z/102fc62ba1.png

GPS signal with foil : http://puu.sh/dvF9c/aff68118e3.png

I have toggled gps on/off in both tests before begining the test.

Note that satellites are never stable in my city (signal quality changes per 5 - 10 seconds in both cases due this) so the foil doesn't actually boost your gps signal, screenshots are to show that they both give the same signal quality.

Won't this make my sdcard/battery/SIM card unswapable?

You can still swap battery easily if you ease off with tapes.You'll still be able to swap your battery, microSD and sim card

exactly the same way you do now

, ONLY if you clothe just the back cover and not the phone as this new method requires sim and microSD slots to be covered tightly.Guide to back cover is under 4th step

But what do I gain from it?

1_)It will increase your battery life.How much depends on how you use your phone.If you put heavy load on it regularly this'll help a lot.If you don't use it long enough to even heat the chipset up it's help won't be noticeable.But even browsing the web gets this phone hot so...

2_)You'll get better performance from your phone : Hot CPU gives less performance compared to a well cooled CPU.Mainly due to throttling*.

*This may or may not prevent throttling on stock ROM as LG has stupidly put a tablet chipset into a phone with only throttling as a temperature adjuster.But I can guarantee no throttling on custom kernels with no overclock.

3_)You will be able to play games without your battery getting drain ridiculously fast.This is mainly due to battery heating up as chipset drains power from it/chipset's heat affecting battery and this will reduce this effect by reducing heat of both.

4_)Extends your phone's life.It is known that running electrical components under high temperature reduces it's lifespans.Battery in particular gets damaged over time, reducing it's capacity and eventually dying off.

5_)You can overclock your phone further as maximum temperature your chipset gets to is reduced enough to overclock it by a bit.

6_)Your chipset will barely heat up to the point of hurting your hands.

How to do it?

You need

: 1_) A scissors 2_) An adhesive tape and 3_) A piece of aliminium foil a little longer than your phone (about 3-4 cms longer)

If you adjusted the size by comparing it with screen, you might want to cut the edges of aliminium foil by a bit since back side of the phone has a smaller area than the screen. (do this at step 2)

1_) Shut down your phone (incase battery falls off)

2_) Cut the foil you have to two pieces, one will cover the battery and the other one will cover the chipset AND you'll connect those two aluminum pieces together later on so make the bottom (battery) piece bigger than it should be.

Now you might think this would heat the battery up but our battery has environmental protection and it actually gets hot via the heat transfared through the circuits from chipset to battery.

3_) Make sure you make gaps in the foil for ;

a_)Camera & LED : See how I covered all around them with foil? I just added 2 pieces to cover the top right edges.Don't trouble yourself trying to make gaps for them on the whole foil, use shortcuts.

b_)NFC

c_) GPS ANTENNA

: See how in the picture there is a red highlighted spot, half covered with foil and the other half naked? This makes your GPS work.Also the naked part next to it lets your GPS work, so do this part exactly the same as in the picture, if you didn't then don't complain your GPS is not working.Keep the top piece of the square as naked as you can, otherwise the foil may block the signal (in the picture I cut it off like a triangle)

Note :

The foil must cover that square even if by a bit since chipset is right below it.Having the foil not touching it would mean this would make a very little difference in temperatures, making your effort go to waste.

d_)WIFI & Bluetooth : This antenna is located to the left of the camera.So avoid foiling the top & left sides of camera.THESE SPOTS ARE FOILED IN THE PICTURE BUT YOU MUST NOT FOIL THEM.

d_)Speaker : Below the battery there is your phone's speaker.Don't cover it with foil (reason is obvious)

4_) Use tapes to stick the foils to the phone.The blue colored marks on the picture are the spots where I used tape on.

Enjoy!

And If you want to still be able to swap your microSD and sim card

, do these steps on back cover of your phone (inside of it).This might prove difficult and probably less effective.But if you want even better cooling you can do both.Make sure the foil on your chipset and the foil inside of your back cover are identical and don't block the GPS signal ( http://puu.sh/dzJZ6/d234d3b347.PNG see how I left the bottom left naked? It's because of gps antenna)

And say good bye to your frying pan!

[Thanks to:

[MENTION=4149511]Sipi1302[/MENTION] for the great feedback and making me notice GPS issues.

[MENTION=3506654]Flying_Bear[/MENTION] for helping me find where GPS antenna is located at.

Mourta for the idea of clothing insides of the back cover.He is a great developer and I highly recommend you to try out his work.]

Old method : (breaks GPS, possibly lower cell signal, here for informational purposes)

So I was using my friend's Iphone 5 today.I did some heavy gaming and his phone was transfering heat to all areas of the phone equally, making the chipset get rid of heat easily.If you played some games with 4x hd you'll notice

only a part of it gets hot

, the part below LG logo at back cover.

So I thought 'why not' and tried to transfer heat equally around the back cover.Had a simple but 'can be effective' idea.Surprisingly this worked greatly and I could feel the heat even at the sides of the phone.

So here is what I did:

[IMG="Red areas are cut-off to prevent NFC from short circuiting or anything else and speaker to work properly."]http://puu.sh/drYR5/c0c3b3b44c.jpg[/IMG]

The image pretty much describes it.I used aluminum foil to direct the heat from hot areas to cooler areas.While it sounds ridiculous it works like magic.

Note that I cut off the connection between the top and bottom aluminum foil so that chipset wouldn't heat the battery up.

[IMG="And the results"]http://puu.sh/drZhK/d96e33d384.png[/IMG]

(işlemci sıcaklığı = CPU temp and pil sıcaklığı = battery temp.)

No matter what I've done I couldn't get the cpu temperature to go above 60 until I did an antutu stability test and it was around 65 C in the end of the testing and quickly descended to 50 in a matter of seconds.

This screenshot was taken when I had a download of 4~ gb size and phone was just plugged off from charger (all this heats up the battery) so expect battery temperature lower than 40 C in normal usage. (37 ish in my case)

FAQ

Any side effects?

GPS

Did my own tests and while it does not block the signal completly, it weakens them and my phone failed to get a lock without or with foils.

Doing some research, it completly blocks off only if it's wrapped up in foil in multiple layers but test it for yourself.

From my testings it doesn't effect wifi or cell signal so if you don't use GPS (most apps use wifi or data to determine your location) it shouldn't be a problem for you.

Won't this make my sdcard/battery/SIM card unswapable?

You'll still be able to swap your battery, microSD and sim card

exactly the same way you do now

, if you follow only the optional steps.

Or you can follow the main and optional steps both and ease off with tapes on back side of the phone but optional steps only should be more practical if you swap them daily.

From my experience following both main and optional steps gives the best results.My battery's temperature is around 3 - 4 C lower now (37ish to 33ish) and CPU is sitting around 42 C during charging with wifi on.

But what do I gain from it?

1_)It will increase your battery life.How much depends on how you use your phone.If you put heavy load on it regularly this'll help a lot.If you don't use it long enough to even heat the chipset up it's help won't be noticeable.But even browsing the web gets this phone hot so...

2_)You'll get better performance from your phone : Hot CPU gives less performance compared to a well cooled CPU.Mainly due to throttling*.

*This may or may not prevent throttling on stock ROM as LG has stupidly put a tablet chipset into a phone with only throttling as a temperature adjuster.But I can guarantee no throttling on custom kernels with no overclock.

3_)You will be able to play games without your battery getting drain ridiculously fast.This is mainly due to battery heating up as chipset drains power from it/chipset's heat affecting battery and this will reduce this effect by reducing heat of both.

4_)Extends your phone's life.It is known that running electrical components under high temperature reduces it's lifespans.Battery in particular gets damaged over time, reducing it's capacity and eventually dying off.

5_)You can overclock your phone further as maximum temperature your chipset gets to is reduced enough to overclock it by a bit.

6_)Your chipset will barely heat up to the point of hurting your hands.

How to do it?

You need

: 1_) A scissors 2_) An adhesive tape and 3_) A piece of aliminium foil equal to the size of your phone. (you need an additional piece equal to half the size of your phone if you are to follow optional steps [clothing insides of the back cover with aluminum enhances reduction of tempreature greatly])

If you adjusted the size by comparing it with screen, you might want to cut the edges of aliminium foil by a bit since back side of the phone has a smaller area than the screen. (do this at step 2)

1_) Shut down your phone (incase battery falls off)

2_) Take the back cover off, put the foil on top of your phone's back to compare sizes

3_) Now cut the aliminium foil to 2 pieces through the middle:

a_) The bottom piece as seen in picture will cover the battery

b_) The top piece will cover the chipset so make sure you adjust the size accordingly.

4_) *As seen by the picture above, the areas marked with red should be cut off to keep phone features functional (rear speaker, camera/LED and nfc areas)

5_) Now use tapes to stick the foil to your phone.I've marked the spots where I used tapes with blue on the picture but feel free to choose your own.Try your best to not get the tapes/aliminium foil stick out of your phone.

6_) Put the back cover back on, if anything is sticking out try to get rid of it.Mine has perfectly fit in so no one can notice it without opening the back cover.

*If you want to still be able to swap your microSD,battery and sim card, go easy on tapes and stick them only to two edges of each piece of aliminium foil.While it won't be as tight it will still work and you will have no trouble swapping them.You might want to follow the steps below instead if you swap SD/battery/SIM too frequently.

OPTIONAL STEPS (clothing insides of the back cover with aluminum foil)

This makes it more practical for those who swap sd card/battery daily only if you didn't follow the steps above.And if you have followed them, you can still do this to enhance the 'heat sink' further.

1_) Go to substep "b" of step 3 in the steps above and also do step 4.After you are done with them you should now have a piece of aluminum foil identical to the piece of foil we've used for the top (can be seen in the picture).

2_) Place it to insides of your back cover, it should look like this

3_) Use the tapes and stick the foil to back of your cover.

a_) OPTIONAL : See the small piece of foil on top of the camera gap? http://puu.sh/du9EB/5e4e9ff7ef.JPG

You can put the small piece of foil there, the one you have cut from the top piece earlier to make space for NFC connection.This should extend the area where heat is disposed.BUT don't repeat this with the back of the phone and make sure that the piece isn't too thick otherwise there will be a small gap between the back cover and the phone when you put the back cover back on which causes dust to fill in.

[Thanks to Mourta for the idea of clothing insides of the back cover.He is a great developer and I highly recommend you to try out his work.]

Alternative pictures for those who can't see puush pictures :

"Here is what I did"

Temperatures in trickstermod (pil sıcaklığı=battery temperature, işlemci sıcaklığı:CPU temperature)

And say good bye to your frying pan!