Develop Bugs

Overheating, random reboots.. out of warrenty

Hi, I have a HTC desire, its nice but it gets hot latley when playing games like angry birds for a bit when the battery drops to 20% or so, and I plug in in.. it starts doing reboot cycle.. I think it only happens until the phone cools down.
I know the only real fix for this is a new mainboard, but I am not under warrenty..
any suggestions on how to live with it, or work with it.. someone told me a bad sim card or sd card might do this to the phone... I have already put 2.3 on it and factory reset and such...
thanks

How old is it? In the eu the warranty is 2 years.
Sent from my Motorola Startac running Atari 2600 software!

Wow, good to see im not the only one. I have the same problems, and depending on the rom they get worse or better. im running CM7 now and i have little problems, but when i was running the ICS beta it happend a lot, both on and of the charger and in my pants pocket or out.
If its overheated and i take out the battery i can smell a sort of molten plastic / overheated electronics smell.

for me it was the same - main problem is motherboard.
in the end service center exchanged for me motherboard and now this problem is gone.
but before this exchange i did following:
* decreased max cpu speed to 576-768MHz (via SetCPU)
* in one of old kernels I was able to manipulate with CPU voltage level, so i was decreasing it for all freq. which was used by me.
* charging only via PC usb ports - when it was able to be fully charged and not overheat
but the proper way would be only to bring your device into service center...

I would also suggest decreasing the max speed

might be that sleep mode doesn't work entirely as it should in some roms, not making the CPU frequency drop enough when the screen is off.
And your device might be getting old and wear is starting to show.
If it's actually damaged, replacing parts may be the only solution

This is a known problem for the first devices. The solution is to change the motherboard, of course at the service center.

mephoneisjunk said:
Hi, I have a HTC desire, its nice but it gets hot latley when playing games like angry birds for a bit when the battery drops to 20% or so, and I plug in in.. it starts doing reboot cycle.. I think it only happens until the phone cools down.
I know the only real fix for this is a new mainboard, but I am not under warrenty..
any suggestions on how to live with it, or work with it.. someone told me a bad sim card or sd card might do this to the phone... I have already put 2.3 on it and factory reset and such...
thanks
Click to expand...
Click to collapse
You need to pick a good firmware I worth Runnymede AIO V 5.0.1 Special Edition-> Base Runnymede 1.22.461.2 Official Sensation sense 3.5 Android 2.3.5 [CM7/r2] [STOCK] [AD2SDX] [A2SD] [BEATS] [RCTWEAKS] [Aroma Touch Installer]
no problems found! the same problems arise Earlier.

How did you void your warranty? Rooting or installing custom does not void hardware warranty. At least I got my pvt1 motherboard replaced even when I had rooted and used superglue to fix some broken plastic under back cover.
Sent from my HTC Runnymede

Ya, the phone is just out of warrenty, it really is only 1 year in Canada.. no ifs ands or butts...
But the phone only seems to do the reboot loop when I play angry birds when the battery is low and or when I play angry birds when the phone is charging ..
I think it happend once in google street view...
in other words intense apps... that make the phone warm up and then the sensor tells the phone to restart to protect the processor from overheating, but when the phone reboots the thing is still hot so it keeps rebooting.. only solution is to take the phone battery out and let it cool..
I guess this problem could get worse but it doesn't happen with normal web browsing at this point. I might have to live with it until I find someone to replace the mainboard cheaper than HTC wants.. otherwise not worth it.
I guess lowering the CPU max might be great so it doesn't overheat in the 1st place, I will try that.
I don't really understand rom, I have 2.3 gingerbread, is there something else I can change to perhaps get a better radio signal on this puppy ?
THanks GUys

I have this problem, although until recently it only when trying to use it as satnav.
I'm glad to hear it's a known problem though.
I contacted my provider and they said perhaps the battery is getting tired and causing it to reboot due to lack of power. I pointed out that it was the other components near the sim & sd card slots that were getting hot, not the battery, so they sent me another one. I did buy another battery too and that has made no difference either. As soon as I rooted the replacement phone it started getting warm too. I'm also pretty sure that the "replacement" was a refurbed one, since the optical joystick doesn't always respond and when typing msgs sometimes the vibe feedback stops working mid-word.
It's very frustrating not being able to use it for navigation any more (although it works happily with My Tracks for recording routes).
However since I've rooted it, I don't think I'd get away with requesting another replacement phone. I've tried installing other rom's that might run cooler, but when I do they always lock at the HTC splashscreen and I have to restore nandroid backup.

Hello,
i'm new to XDA developers. Should i buy this phone? I'm thinking about it these days but i'm not sure if it is worth. Thanks for your answers.

The same Problem on my Phone! While charging i can not use my Phone.
My solution: Don't touch while charging. :-(

I think I have same problem...my Desire in regular use get worm at 35% and at 38% burns my hand...and what is wors,for 15/20 min. regular use(not havy or gaming) temp. rise from 28% to 37% but something confuse me...last night I play 3d games for an 1 hour and at 20 min. I put it on charger and continue to play games and 40 min. later temp. is 40% and stil no reboot but butom side of phone(not battery...front side (buttons and screen) and back side) is so hot that I can burn my hand on it. I put statistic that battery indicator show(time,%,temp.). So is it like that to you guys? Is your phone have that heat thing for 15 min. of regular use?
Its pic of last night 3D gaming and its all statistic of temp./ % / time...

setCPU sorted this issue for me

mld0491 said:
setCPU sorted this issue for me
Click to expand...
Click to collapse
Ok, sounds promising. Can you elaborate on that a little bit please? What settings did you use etc?

Ahhhhh.... My gf phone having this issue.. and i think the problem is the sdcard, class 2 and use it for a2sd..
But, i tried to unroot the problems still happen, even without sdcard, the best way for me is leave this phone.. :-(
Sent from my PG86100 using xda premium

If still in warranty, call HTC.
Sent from my HTC Desire using Tapatalk

timwb said:
Ok, sounds promising. Can you elaborate on that a little bit please? What settings did you use etc?
Click to expand...
Click to collapse
simply installed it, and it had it run at lowest speed on idle so it could remain cooler
(you can check the settings on it to see what it runs on idle and modify to your needs anyway)

I have similar problem like yours. I suspect the problem is come from SIM because there is no this kind issue happened IF turn to flight mode or tool out the SIM.
Sent from my HTC Desire using xda premium

The heat Issue?

I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?

Rupar4o said:
I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?
Click to expand...
Click to collapse
I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.

Heisenberg420 said:
I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.
Click to expand...
Click to collapse
Thanks for the reply, someone with issues ?

Same here not felt it get warm even watching video.

When the phone gets hot several things happen.
1) The CPU is clocked down to help lower heat
2) Brightness is capped to help lower heat
3) If the phone continues to get too hot (usually when its already hot and you then start to play a really intense game, or benchmark the phone may shut itself down.

People complained a lot with the Korean model but I haven't seen anyone with a US model complain. Maybe the type of person that waits is less likely to be a phone gamer? They may have actually tweaked it so it doesn't activate as quickly or harshly. I do know some people disabled it on the Korean model. I haven't heard of anything bad happening but those few people may have felt dumb if it destroyed their phone and not posted that it did...

I have no heating problem with my lg g3 international D855 16gb model, even during quadrant test or playing games.
Sent from my LG-D855 using Tapatalk

Define an actual temperature for hot.

I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.

I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.

what heat issue

jutley said:
I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.
Click to expand...
Click to collapse
Do we have any official documentation from Qualcomm on how hot the cpu can safely be?

flaring afro said:
Do we have any official documentation from Qualcomm on how hot the cpu can safely be?
Click to expand...
Click to collapse
Not sure it must be out there somewhere I am sure.

[email protected] said:
I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.
Click to expand...
Click to collapse
My girlfriend picked this up yesterday and this is happening to her G3. Not playing games though, just browsing the internet/reading an article. It makes no sense to me. How can you take control over that? She doesn't want to root the phone.
But yeah, just reading something or even looking at Facebook, the phone gets way too hot.

I picked up the Verizon version yesterday. It's gotten pretty warm around the power button a few times for me also. Typically not bad or what I would consider unusual with one or two exceptions.

My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!

ShiroEd said:
My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!
Click to expand...
Click to collapse
This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.

Batfink33 said:
This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.
Click to expand...
Click to collapse
Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.

mrhaley30705 said:
Define an actual temperature for hot.
Click to expand...
Click to collapse
this.
all phones get warm if you are on it for an extended period of time, surfing (using data), gaming etc etc screen on for long periods of time. those saying they can game and not have heat are lying to you. phone gets warm when screen is on for extended period of time and by phone I mean any phone

ShiroEd said:
Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.
Click to expand...
Click to collapse
Yeah, i had a flickering display which didnt go away.I returned that phone. Another poster yesterday had the same issue.Im wondering if the GPU is frying itself? Although the GPU does throttle as well as the CPU. Running Antutu I would get 60+deg C maybe playing a game for an extended period of time for example is causing damage? Just a theory.

LG G3 shutdown due to high temprature

PHP:
today I experienced a new issue and I want to share it to see if anyone have the same issue.
when I was using my device today a warning window came that says the device has detected a high temperature issue and will shutdown, and the device shutdowns.
I don't know if anyone had the same issue before so if anyone have please say.

Let me answer you through question... What does your pc do when it overheats?
Usually reboots or shutdown, right? It is same with phones.
Sent Via G3

If you're not going to help, just don't say anything
Sent from my SM-P605 using XDA Premium 4 mobile app

Let me clear this, there is no help for it. Or by other words, that you would understand as help:
Dont force your device so much in overheating.

@droidhd is a total asshole. Treating people like that is how he gets off.

Thank you dear. You all are so smart, but none of you gave any other advice or tip what could be wrong. That's why you need attention like this, to tag others with that speech... Good enough *sarcasm*
Sent Via G3

Androidfreakz said:
@droidhd is a total asshole. Treating people like that is how he gets off.
Click to expand...
Click to collapse
No need for name calling. Let's all calm down guys [emoji2]
Sent From My OnePlus One Using Tapatalk

salahhuss said:
PHP:
today I experienced a new issue and I want to share it to see if anyone have the same issue.
when I was using my device today a warning window came that says the device has detected a high temperature issue and will shutdown, and the device shutdowns.
I don't know if anyone had the same issue before so if anyone have please say.
Click to expand...
Click to collapse
it is normal..i left my phone in my car and it shut down due to the heat of the sun..i live in florida so it gets really hot but it is not normal for the phone to shut down if it detects a high temperate when there is not

Overheating, random reboots or shutdowns?
Yeah .
I picked up 4rd LG G3 32GB phone yesterday. All older have overheating defect (and I guess this one will made no different). Its big beast with a lot of power and there seems to be some bugs to deal with. Im sad too, I want to keep this phone and not change to another one.
Just quick test from rest of you: run Antutu benchmark like 3 times (you can restart it after 30% after CPU tests). Sometimes Im unable to make one single run of benchmark and phone shutdown itselfs. Great.
(oh, EUR edition, metal black, 1st wave)

Took my g3 on holiday with me, phone was in my pocket not used for a while. Took phone out pocket to get some holiday snaps, after taking 3 pictures with the stock camera phone over heated and shutdown. Great photo opportunity missed. Took phone back off and battery out so could cool quicker,and left to one side for 45 mins to an hour. Was an overcast day and not very warm. Put phone back together turned on, and fired up the camera. 4 pics later, warning phone over heating, will power off. What good is the camera if u can't use it, missed some good pic opportunitys. Not happy.
Sent from my LG-D855 using Tapatalk

Overheating has been addressed in builds 10G and later - what firmware you running?
Also did you disable Thermal protection in the hidden menu (it is billed as a way to reduce lag by some numpties on xda) - doing this will cause your phone to get hotter quicker and stay hotter for longer thus increasing the chances that it will shutdown for overheating.

Lennyuk said:
Overheating has been addressed in builds 10G and later - what firmware you running?
Also did you disable Thermal protection in the hidden menu (it is billed as a way to reduce lag by some numpties on xda) - doing this will cause your phone to get hotter quicker and stay hotter for longer thus increasing the chances that it will shutdown for overheating.
Click to expand...
Click to collapse
I'm on 10j and still getting shutdowns.Not rooted and not disabled thermal protection.

Lennyuk said:
Overheating has been addressed in builds 10G and later - what firmware you running?
Also did you disable Thermal protection in the hidden menu (it is billed as a way to reduce lag by some numpties on xda) - doing this will cause your phone to get hotter quicker and stay hotter for longer thus increasing the chances that it will shutdown for overheating.
Click to expand...
Click to collapse
I'm running 10g non rooted, did do the thermal trick at the time, so maybe it was that, have since disabled as noticed battery drain was a lot higher. Haven't tested camera yet though.
Sent from my LG-D855 using Tapatalk

Androidfreakz said:
@droidhd is a total asshole. Treating people like that is how he gets off.
Click to expand...
Click to collapse
guys we are trying to help each other here there is no reason for these words

droidhd said:
Let me answer you through question... What does your pc do when it overheats?
Usually reboots or shutdown, right? It is same with phones.
Sent Via G3
Click to expand...
Click to collapse
I know that this can happen in laptops but In phones this is the first time to happen to me... especially the warning message
I just wanted to check if there is anyone else had the same message...
another thing is that there are times when my lg g3 is hotter that when the message came (especially when using the phone while charging) but the message didn't came... so I don't know how is this heat shutdown thing works.

androiduser991 said:
I'm on 10j and still getting shutdowns.Not rooted and not disabled thermal protection.
Click to expand...
Click to collapse
i'm in 10G version and i'm rooted and having the thermal detection off.
ohh I remembered another thing... when the phone shutdowns I was not in the visible sun so it is not something related to sun exposure... it must be something with the software

Salahhuss, can you tell us what you did with the phone that you got that message? If nothing, get yourself betterbatterystats (search on xda) and check what makes you wakelocks...
Sent Via G3

droidhd said:
Salahhuss, can you tell us what you did with the phone that you got that message? If nothing, get yourself betterbatterystats (search on xda) and check what makes you wakelocks...
Sent Via G3
Click to expand...
Click to collapse
I'm using the phone right now as this issue happened only one for me so i'll wait and see it happen again then i'll contact the supplier to check it.
In the meanwhile i'll try the program you mensioned and see the results.
Thanks for ur help ?

Seems to me that the heat sensor on the batteries often malfunctions and you get this issue. If you wrap some tape around it to keep the top plastic pushed down against the battery pack the issue might go away.

bhojo1 said:
Seems to me that the heat sensor on the batteries often malfunctions and you get this issue. If you wrap some tape around it to keep the top plastic pushed down against the battery pack the issue might go away.
Click to expand...
Click to collapse
I think I am having this issue on a G3s, the phone used to work normally but lately I can't even run it long enough to get my photos off of it because within 1 or 2 minutes after turning it on it gives the temp warning and shuts down, the phone doesn't feel warm and I wasn't using any apps. I don't understand where to wrap the tape, where is the heat sensor located? I'm trying to push the battery against which side exactly?
Update:
Just having the info that it could be the heat sensor of the battery was helpful, I tried swapping the battery from another phone and the problem seems to have gone away at least for now. I was able to connect to a computer and copy over my files. Will be keeping my fingers crossed....

Serious over heating issue

So ive had my Tmobile G4 for about 3 weeks now. Ive been using the G series since it started. I love the G4 but wow ive never had a phone with this type of heating issue.
There is not a time when the phone js not at least warm to touch. Few times a day it gets to the point where its too hot to touch at all. Forget about making a phone call way to hot to lut against face.
Im not doing muxh of anything either. Web browse etc... But its hot at idle screen off just sitting there.
Anyone have issues with heating? Multiple times its given me the over heating message and shuts off phone.
Last night for example it got to 80c.... Thats fricken hot!
Could factory reset help it? I dont know what to do at this point? Am i just having to get a replacement? As i type this from my g4 sensors showing high 60 to low 70C.
The heat is generating from the top half of the phone btw. Like at the camera it feels like.
Any suggestions or help? Thanks

Syntax323 said:
So ive had my Tmobile G4 for about 3 weeks now. Ive been using the G series since it started. I love the G4 but wow ive never had a phone with this type of heating issue.
There is not a time when the phone js not at least warm to touch. Few times a day it gets to the point where its too hot to touch at all. Forget about making a phone call way to hot to lut against face.
Im not doing muxh of anything either. Web browse etc... But its hot at idle screen off just sitting there.
Anyone have issues with heating? Multiple times its given me the over heating message and shuts off phone.
Last night for example it got to 80c.... Thats fricken hot!
Could factory reset help it? I dont know what to do at this point? Am i just having to get a replacement? As i type this from my g4 sensors showing high 60 to low 70C.
The heat is generating from the top half of the phone btw. Like at the camera it feels like.
Any suggestions or help? Thanks
Click to expand...
Click to collapse
Is the battery draining abnormally fast? Check the usage for play service, could need that fix

If you live in a hot area like me, such as LA, then you probably experienced phone shutting down while using phone as a GPS due to the overheat.
I've never Had that problems with all of my previous phones but I'd give few software updates for optimization.
Sent from my LG-H811 using XDA Free mobile app

Yeah battery is draibing very fasy. I use a battery monitor and nothing is sucking it up.
Also, i live in Arizona where it has been 110 degrees daily. Though it hasnt shut down from heat outside or when using gps yet.
It shut down with over heat warning last night in my apartment where its 67 degrees in here while i was on google.com just browsing. So im clueless right now.
I just cleared cache partition and booted to safe mode to see if it runs any better.
I can leave my phone on my table for an hour and pick it up and itll still be scorching hot doing nothing. Its literally never not hot to touch.

Yeah. That's the mytmobile app... Unchecked all the boxes in the settings. Helped me
Sent from my LG-H811 using Tapatalk

My 1st Tmobile G4 Online Preorder had some problems mostly screen. I sent it back. I went to the store and bought one. That one was always hot as well. It was always throwing warnings at me. I had Gmaps on in my car with the AC on and only 70F out the time and it shut down on me. I called Tmobile and did some master reset etc and still was the same. I finally just went back to the store and told them to exchange it after they seen how hot it got in store. Tired to tell me I was at 15days when I went back in but I called in a few days before and asked what day was the 14th Monday or Tuesday I guess they count Purchase day as day 1 and that's what I thought but the person I talked to said no but they called Manager and they honored it. This phone finally seems to be good a few little issue's but they should get worked out soon with software we all hope. The 1st 2 phone's I had the Update Pushed to my phone the 3rd one was already on the phone so might be newer batch ? I was not happy spending over $600 on the phone with the issue's I had on those til this 3rd one which is good so far.

Syntax323 said:
I can leave my phone on my table for an hour and pick it up and itll still be scorching hot doing nothing. Its literally never not hot to touch.
Click to expand...
Click to collapse
Then I'd say that even when it's doing nothing, it's still actually doing something, maybe just something it shouldn't be doing.
My Verizon G4 ran warm, and I was disappointed with the battery life. Different monitoring tools were unable to point me to what app (?) was causing the problem. Sometimes it would stay cooler after a reboot. Mine was never just constantly hot, however. Mine would be cool sometimes when sitting around, and then sometimes warm. Like taking it off the charger in the mornings, some days it would be cool, others it would be warm (~95F or so), when it had been just sitting there with the screen off.

Just now for example. After i replied here i out my phone on my table. I just now picked it up and it was 74 C. Scorching. Like its just gonna melt ibro a pile of G4 goo lol.
I guess ill call my store on Monday. Safe mode and clearing cache partition didnt help at all.

Syntax323 said:
Just now for example. After i replied here i out my phone on my table. I just now picked it up and it was 74 C. Scorching. Like its just gonna melt ibro a pile of G4 goo lol.
I guess ill call my store on Monday. Safe mode and clearing cache partition didnt help at all.
Click to expand...
Click to collapse
Are you using a case with it? I recently had overheating issues and figured out that the leather wallet case I was using was causing my G4 leather to overheat. It went as high as 112°5F But as soon as removed it it went back to normal.
Sent from my LG-H811 using XDA Free mobile app

jjdevega said:
Are you using a case with it? I recently had overheating issues and figured out that the leather wallet case I was using was causing my G4 leather to overheat. It went as high as 112°5F But as soon as removed it it went back to normal.
Sent from my LG-H811 using XDA Free mobile app
Click to expand...
Click to collapse
Nah I have the black version normal backing not the leather version. I have the thin Tech21 case but i took it off a week ago to see if this helps.
As im typing this my phone is at 75C which is 167 degrees F! So hot!
Possible a Facorty reset could help? I really dont have many apps installed right now either. Since its relatively new ive been slowly installing apps. I started blank, didnt install anything from backups etc. The apps i do have installed are pretty basic. Nothing syncing or running. Ive been clear the recents aswell just to try. Frustrating

Have you tried turning off WiFi? I've noticed occasionally that my phone will constantly drop WiFi on my home router and reconnect a few seconds later, repeating this until I restart the router. All of that constant disconnecting and reconnecting makes it pretty hot...
Sent from my LG-H811 using Tapatalk

All latest smartphones heat up
Sent from my SM-G920T

Supersanborn said:
Have you tried turning off WiFi? I've noticed occasionally that my phone will constantly drop WiFi on my home router and reconnect a few seconds later, repeating this until I restart the router. All of that constant disconnecting and reconnecting makes it pretty hot...
Sent from my LG-H811 using Tapatalk
Click to expand...
Click to collapse
Yeah its happening regardless. I turn data off when im on wifi and my wifi never loses connection, it stays constant. Though i did try a few days ago using no data or wifi and same dral, just hot.

Have you tried a factory reset? I leave my wifi on and stream music and everything. The only time it gets warm is when I Fast Charge. But I mostly wirelessly charge so its still cool.
Maybe you should exchange it.

I'm second on that doing factory reset. Seems like you have a corrupted profile or rogue app, or both.
Sent from my LG-H811 using XDA Free mobile app

What sensors are you referring to? With wich app? That's fundamental

I were having over heating problems on my G4. It were so hot at one point that my 6 year old daughter picked it up to play a game on it. The phone was that hot my daughter actually started crying cause the phone burnt her hand. This is not good. I have an awful lot of applications on my handset, over 300 so before I contacted LG I did a LG backup and reset. I restored probably half the apps what I had and a week after I haven't had a problem and the phone seems to be running as it should. The phone isn't even warm.
My theory is the G4 has 64bit processors. The snapdragon 810 processors were known for over heating and the G4 uses the snapdragon 808 processors for this reason. The 64bit processors deal with twice the data at the same time to the old 32bit processors and this contributes to them getting too hot. I feel that a few tweaks by developers and updates from LG is what's needed to combat the over heating. Time is our friend here and a bit of common sense. When you install a new app and overheating occurs then just remove the problem app. I always see how the app affects the handset now for over heating problems.
The 64bit processors in the G4 are new and need to have some updates to combat the overheating I feel. I recommend a system restore, debloating and only using the apps what you need.
I remember when pc's went from 32bit to 64bit processors. There were processors burning out, melting, water cooling became popular and bigger fans to combat the over heating. In time it sorted itself out so I feel this is the case for the G4 and other new handsets running 64bit processors.
Hope this helps.

Did anyone try unchecking the boxes in the my T-Mobile app? My phone went from 50% to %5 in less than 30 mins running crazy hot. You could also try uninstalling the app updates, or using the debloater tool on xda to disable it.
Sent from my LG-H811 using Tapatalk

Same here, although not so hot that it "burns". iPhone 6 got warm but never so hot - software improvements should help combat this over time. +1 on the debloat tool.
One may argue the dead air via removable back cover can act as an insulator vs a compact design. Maybe just get an Otterbox/Thick case so you can't notice the heat as much? Could possibly lower battery lifespan though.

I've had my AT&T G4 for a little over a week. The first couple days the battery life was horrendous so I did a factory reset. The battery life improved greatly however that's when I noticed the top half of my screen getting unbearably hot. Another factory reset didn't solve the issue. So I talked with an AT&T Rep and am taking mine in for a replacement now. Hopefully will resolve this issue. Will update.

I HAVE FOUND A SOLUTION FOR THE LG G4 BOOTLOOP ISSUE *Story & Tutorial*

Basically what happened, was on Friday, my phone got stuck in a boot loop. It would get to the "Optimizing Apps" screen and shut off again. Other people may just get to the Verizon screen, or even just the LG screen. I looked it up and found that it was a major issue affecting many people, so I just filed for a warranty and received my new phone today. Well, on Saturday night LinusTechTips, a popular tech YouTube channel(You should really check them out, they are great), released a video on how they fixed a dead Graphics Card and PCI-E SSD by heating them up past the melting point of solder and then testing them. For them, it only worked on the GPU. As I was packing up my seemingly dead phone to ship back to LG TODAY, i decided to give it one more shot. I disassembled the device to the point where I could take out the logic board. I took the logic board and wrapped it in one layer of parchment paper and two layers of tinfoil, shiny side facing in(FYI tinfoil has two sides, shiny and matte). I then placed this package into a barbecue. I turned on the left and middle burners and left the package with my logic board inside on the right side to the grill so it wasn't receiving direct heat. After 10 minutes, I took it out, re-assembled my phone and it booted. I was able to get all of my pictures off of it. This has only been confirmed to work on my phone, but seeing as this SAME issue is affecting thousands of people, It's definitely worth a shot. If you are going to use an oven, PLEASE, make sure it's above 385 degrees Fahrenheit and that you don't plan on using that oven for food ever again, this may release some toxic chemicals etc. I plan on using my grill again, so I just made sure to leave the grill open for 24 hours and I'm going to clean it before I use it next. If you have any questions let me know!
P.S. My LG G4 was the Verizon model.

I highly recommend doing this ONLY if you have no other option. Remember that heating a logic board to high temperatures can release toxic fumes. Don't use an oven you use for food preparation! Toxic fumes can leave residue in the oven and will be re-released upon reheating over many cycles!
Assuming LG's press release regarding the issue is correct and it is really a loose contact, this "fix" could actually work. Of course, only if the loose connection is a soldered connection. Though, it's controversial. You have to remember that the melting point for SMD solder is around ~350°C, or 662°F. So 358°F, or 181°C, is not nearly enough to actually re-solder a loose connection. My guess is that the loose solder point is only expanding due to the heat. There is no real reconnect. It might only be a matter of time until it also breaks. If you could locate the actual loose connection you could really re-solder it and have it fixed permanently.
I've done this on many many devices, including graphics cards, smartphone logic boards, PC mainboards etc. It only works if a soldered connection has a crack small enough that heat expansion is enough to gain reconnection. If there is a loose contact on the PCB or the "crack" in the solder is too big, it does not work. Also, if you really have a dead chip, this trick also won't (always) work.

I read a similar story on reddit. The guy put his main board in the oven, reassembled it, and the phone started working. The last update I read was 3 days later, still working.

I fixed mine temporarily by heating up the emmc chip using solder hot air gun. It seems to be just the emmc chips connection.
Failed again after a fortnight when the phone got too hot. The connection seems to break when the g4 gets hot.
One option to try is to boot the phone inside a freezer. I found that worked too.
Pretty poor quality control on lg's part.
I'm going to try again and see if I can fix permanently.

Worked for me too
I have a LG G4 H815 with serial number starting with 507. It died yesterday night. The bootloop escalated quickly to full death. Even the freezer trick did not work.
I followed the OP instructions. I heated up the grill to ~250 degrees Celsius and cooked the motherboard for 10 minutes.
Magically the phone has been working for a couple of hours since and I have been able to backup files to the external SC card.
I wonder how much more will it work.
Thank you for help OP!!!
Word of advice to other LG G4 users. Backup your phone regularly. Use an external SD card. Set the camera to save images and videos to the SD card. At least at doom day you will have them saved.
Cheers

Silverdace said:
I'm going to try again and see if I can fix permanently.
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any more info on this? Looks like my phone bit it the other day, no boot...just dead...
I'm going to take her apart to see if I can find a bad solder, luckily I still had my G2 lying around.

NFN, I sent mine back to LG US in Texas for a full warranty repair. 10 days RT, no cost at all, shipping included.

No unfortunately. I managed to overcook it and it stopped booting altogether

Do you have the address and info Re your communication w/ lg
metropical said:
NFN, I sent mine back to LG US in Texas for a full warranty repair. 10 days RT, no cost at all, shipping included.
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Do you have the address and info Re your communication w/ lg, I'd like to send mine back for repair due to this same issue.

http://www.lg.com/us/support/repair-service/schedule-repair-us
they did a **** job. touch screen peeling and failing. Phone slowing down again after about 6mos. Looking for a new phone, but the choices are so limited.

My phone is 2 years 4 months old....never bootlooped
Feel bad for u guys

deltadiesel said:
My phone is 2 years 4 months old....never bootlooped
Feel bad for u guys
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Mine made it just about the same but died from other causes.

deltadiesel said:
My phone is 2 years 4 months old....never bootlooped
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Click to collapse
What is the beginning of your phone's serial number?

Hi bro kindly tell is it worth to install custom rom kernal with root to prevent the cpu to clock high speed so it will not go into bootloop? My is also 2 years old thanks

250 degrees F for 6 minutes and brought the phone back to life. We'll see how long it lasts.
Actually it worked on BOTH G4s I have. I first just went dead and I bought a used one for $100 on eBay and it worked fine until the bootloop showed up.