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my g1 is too hot at the bottom...

does anybody else notice too much heat at the bottom of its g1

all of them are, ive had 2 with the sam prob, only when charging and constant non stop use (wen i first got them!) now, its only when its charging, once i plug it out, it cools down.

magicman1987's analysis is incomplete and inaccurate.
Heat is caused by three things; the friction between electrons and conductors, and infrared heat from light sources, the latter of which would be negligible and due to the screen and other LEDs. Electron friction is the primary culprit and occurs due to the following;
1) battery charging *AND* discharging -- lots of electrons are moving fast. Electron friction. MAJOR source of heat.
2) device usage - CPU, wireless radios, etc. Electron friction. Note that the CPU and cell network radios are located in the area you are complaining about getting hot. MAJOR source of heat.
This is all normal and is nothing to worry about.

thanks for the quick reply. another problem that concerns me. is that my speaker some times stops working and i was wondering if the heat have something to do with..

lbcoder said:
magicman1987's analysis is incomplete and inaccurate.
Heat is caused by three things; the friction between electrons and conductors, and infrared heat from light sources, the latter of which would be negligible and due to the screen and other LEDs. Electron friction is the primary culprit and occurs due to the following;
1) battery charging *AND* discharging -- lots of electrons are moving fast. Electron friction. MAJOR source of heat.
2) device usage - CPU, wireless radios, etc. Electron friction. Note that the CPU and cell network radios are located in the area you are complaining about getting hot. MAJOR source of heat.
This is all normal and is nothing to worry about.
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Geez, I think I earned enough credits reading that to obtain a MS EE.

jashsu said:
Geez, I think I earned enough credits reading that to obtain a MS EE.
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lmao!!! ...i have also wondered why the g1 at times got so dam hot!! thanks for the info lbcoder!!

nearxos said:
does anybody else notice too much heat at the bottom of its g1
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Probably yours dream has a hard on. It happens...
The way to fix it is to put it over an Nokia N95 or HTC Magic, Connect them both with a USB and then rub them together for about 2 minutes. Increase the speed of the motion and dont' worry if they start vibrating.
After that, let them rest for a while and you're good to go.

This thread is becoming stupid and juvenile....and closed

Device lower back getting warm?

Does the lower part of your device back get warm after using it for 5-10 minutes web browsing or navigation or just fiddling? When holding in the hand you can clearly feel this warmth, but there is no overheating or burning (at least not now during the winter

its warm most of the time , but i am using this device so i guess it would generate some heat .
and i notice it even more when i have the device set to ROUTER sharing internet , then its even wamrer , depending on how far away the laptop is from the HD2 .
but it hasnt burned up , "YET " ............
/T

Mine gets really warm, no 3g here and a fairly stable gprs, so the phone isn't constantly signal hunting.
But it gets even worse if you charge it at the same time, and in fact when in the van and running a 1 amp ciggy lighter supply, the phone sometimes even says that there is not enough current to keep the phone running the current applications, and to shut some down, not good when bluetooth is needed, and running satnav, auto data updates then seem to be too much.
I dont know what current rating the htc car adaptor is, but if you buy a cheap crappy one from the carphone warehouse, i believe they are only rated at 500ma, the same as thier mains mini usb chargers
Big screen to keep powered up..........but gorgeous to boot!!!

The antenna is located in the lower back. On extended use it'll get warmer. You can also note this when making a long phonecall with phone in hand or using the internet for long time. If you charge it at the same time also the battery gets warm.

Cant say ive noticed it much with my hd2 but my diamond used to get really hot where the antenna was.

In the first days after I bought the phone, I've kept the screen on by mistake... It was in the leather case that comes along and I didn't realize it.
After about 3 or 4 hours, I've realized that the phone was rather hot. Removing it from the case revieled that keeping the screen on for a longer time will not only waste your battery, but even turn the phone in a frying pan.
You could test this if you browse some lame HTML web page, that doesn't have any scripts running in the background...

I'm not gonna answer the poll, purely because it doesn't have an appropriate answer for me.
The back of my HD2 gets warm when I use it intensively, like browsing the internet for 1/2 an hour via wifi, but doesn't get even slightly warm when I'm using it as a phone.
Anyway, it tells you in the manual that the phone will get warm when in use, so it's not as if no-one didn't know about it. We've all read the manual right?

Have you guys never used a smartphone before? It's perfectly normal that they get warm when you use them, especially with WiFi.

freyberry said:
Have you guys never used a smartphone before? It's perfectly normal that they get warm when you use them, especially with WiFi.
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My point exactly.
However, it's more like a HD2 property to get very warm, almost hot when the huge screen is on for a longer period: this doesn't happen on other smartphone.
Then again, this could be taken as normal, given the screen size...
In conclusion, there's no need to warry!
P.S.: in case the phone is charging and the battery is way too hot, there is a feature that will automatically stop the charging process in order to prevent the battery from damaging (according to the manual johncmolyneux mentioned): good thing!

amang2205 said:
it's more like a HD2 property to get very warm, almost hot when the huge screen is on for a longer period: this doesn't happen on other smartphone.
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My Touch HD used to get a LOT hotter than the HD2. This is warm at best.

The Touch HD gets a lot hotter. The iPhone as well. Again, smartphones do get warm, that's perfectly normal.

haha.. it's an extra accessory for cooking.... There's even a secret setting to setup the temperature... To get serious, i think this is perfectly normal. I don't think it gets more than 35 degrees Celcius. I noticed it after hard use. Don't forget 10 years ago, 1Ghz processors with 10 times less power needed passive heatsinks 10 times the size of HD2..

For the iPhone, there's even an app to make it a hand warmer!
But I guess it drains the battery quite fast... and surfing or playing games certainly gives the same effect.

Problem is that it gets warm when charging too... there doesn't seem to be any thermal cutoff or battery full cutoff. I believe the excess heat when leaving the HD2 plugged in over one night is what killed my HD2.

The heat in mine stopped the touchscreen working until the phone cooled down so I've sent it back for replacement. A bit annoying as I was using the phone all the time so it got warm often. In some cases, I'd say it got hot, especially as it's summer here in Australia.

[Q] Overheating on large videos?

From what I have been able to find out so far, its not so uncommon for high-powered smartphones to get warm when doing cpu-intensive activities.
Does that mean mine is operating normally when it force-restarts 15-20 minutes into an 800mb video file in Rock Player? Seems kind of strange considering this is a media tablet...
Is anybody able to get through large video files okay, or am I going to have to start investing in gel-ice packs?

gilrad said:
From what I have been able to find out so far, its not so uncommon for high-powered smartphones to get warm when doing cpu-intensive activities.
Does that mean mine is operating normally when it force-restarts 15-20 minutes into an 800mb video file in Rock Player? Seems kind of strange considering this is a media tablet...
Is anybody able to get through large video files okay, or am I going to have to start investing in gel-ice packs?
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could be you got a dodgy unit there mate. ive not had that problem at all. i can watch .avi/.mkv pretty much all day without much heat problems.

Well that's a real bummer, considering mine doesn't have a warranty (second hand beta device).
But now I'm curious about ways to fix or mitigate the issue. Do smartphone processors/ram (could be either that's causing trouble, considering they're both in the same region) generally give off large amounts of heat, managed by cleverly placed heat sinks to spread it out? Or could you cover it in insulation and still have it run cold in high-demand activities?
My line of thought goes something like this: Considering the ifixit guide looks only slightly scary, perhaps I could tear my phone apart and either repair any bad connections with heat sinks if they exist, or create a makeshift heat sink out of aluminium foil and processor paste that could hopefully spread the heat out to the cooler regions of the phone.
Too crazy?
-edit - Looks like I was on the right track on bad contact with the heat sinks! After folding up a sheet of aluminium foil and wedging it between the Streak and the battery cover over the proc/ram area, the extra pressure seems to be effective in pressing the heat sink against the affected chip. I am getting much more external temperature, and a (relatively cool) 34 degrees (31 with my room's AC on) after a 45-minute video that normally would quit at around 16 minutes.
'Course, now its tougher than snot to insert/remove the battery case, and I have this unsexy bulge where the battery cover bends around the extra junk, but I'm just pleased as punch that I can watch documentaries on my hour-long train ride to work every day. And if this method ever loses effectiveness, I can always live on the dangerous side and try injecting some processor paste into the heat sinks.
I feel so relieved now! This is almost as good as the time I fixed my broken graphics card with duct tape

Beware!!! Daydream vr

Hey everyone so I decided to try the daydream VR since my friend has It. I spend about 45 minutes immerse in the experience and all of my sudden my phone shut off. I took it it out and the phone was extremely hot!! I thought maybe it was dead. So I plugged it in. And it dint do anything at all.. at this point I thought of the worse and thought my phone might have overheated and fried the internal. My friend suggested putting the phone next to the AC to cool down. And about 10 minutes of cooling the phone actually turned on..
All I can say is beware of long periods of time in the VR. I for sure will not be using this..

I posted on this as well the Daydream vr Pixel combo, is dangerous to say the least.
Mine heated up so bad in 5 minutes. i could feel the heat radiate to my face through the unit.
I had to pay for my Daydream a few days ago returning it may be my best option.

egren58 said:
Hey everyone so I decided to try the daydream VR since my friend has It. I spend about 45 minutes immerse in the experience and all of my sudden my phone shut off. I took it it out and the phone was extremely hot!! I thought maybe it was dead. So I plugged it in. And it dint do anything at all.. at this point I thought of the worse and thought my phone might have overheated and fried the internal. My friend suggested putting the phone next to the AC to cool down. And about 10 minutes of cooling the phone actually turned on..
All I can say is beware of long periods of time in the VR. I for sure will not be using this..
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Were you using a case with your phone at the time, also out of interest as you mentioned AC, what is the climate like where you live?

Mdizzle1 said:
Were you using a case with your phone at the time, also out of interest as you mentioned AC, what is the climate like where you live?
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I live In NY temp today was high 40s. And yea I did have a case. But I still don't think this is safe for your phone.

humdrum2009 said:
I posted on this as well the Daydream vr Pixel combo, is dangerous to say the least.
Mine heated up so bad in 5 minutes. i could feel the heat radiate to my face through the unit.
I had to pay for my Daydream a few days ago returning it may be my best option.
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Yeah I'm definitely not ordering one for myseld

egren58 said:
I live In NY temp today was high 40s. And yea I did have a case. But I still don't think this is safe for your phone.
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I agree it doesn't sound great, i doubt it will blow up on your face as the phone will self-power down long before then.
What case are you using out of interest? A thick silicon/rubber case will have a massive impact on the thermal performance on the phone. It will have the same effect as placing something over your computer fan outlet, eventually the system will shut down as the temp builds up.
On the bright side, I haven't seen any mention of any extreme thermal issues (phones will get warm when pushing VR content) so hopefully it is an isolated issue or is a software issue that can be patched.
Other than melting your face, how is the daydream experience?

Lol it is pretty nice,i found an app on the play store.
That had me in some girls bedroom while she was getting dressed.lol I was looking all around the bedroom.
Skydiving,bowling,etc.
Warning you will get dizzy.

That's a shame that it heats up that bad considering the phone has good thermals on its own. But it makes sense with the fabric insulating the phone keeping the heat from leaving efficiently.

tiny4579 said:
That's a shame that it heats up that bad considering the phone has good thermals on its own. But it makes sense with the fabric insulating the phone keeping the heat from leaving efficiently.
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There is no fabric that insulates the phone. The phone sits in plastic with rubber stand offs that space out the phone so it has a gap all around the phone.
I take my OtterBox commuter car off my phone when I use daydream and while the phone does get very hot I have not had a overheat message yet out has the phone shut down.
Sent from my Pixel XL using Tapatalk

Ugh. Was hoping their would not be heat issues in the case...was so annoying taking my note 7 out of the case every time i wanted to VR...
Someone needs to come up with a case with a passive heatsink pf some sort on it.
Sent from my Pixel XL using Tapatalk

Remember guys, any and all devices you leave the "light" on will get hot. Feel your TVs, even the LED get warm - hot.
While you're using the VR you've got the screen on and are taxing the Pixel in an enclosed visor. Plus your head is probably hot, esp if you're watching the prawn stars

clockcycle said:
Remember guys, any and all devices you leave the "light" on will get hot. Feel your TVs, even the LED get warm - hot.
While you're using the VR you've got the screen on and are taxing the Pixel in an enclosed visor. Plus your head is probably hot, esp if you're watching the prawn stars
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Lol

yeah I tried my Note in the Gear VR (came free with it) was an ok experience but my god did the phone get hot, they are pushing the performance of these devices to the limits so it should be expected they get warm, but then there is a point where you should be asking if it was actually thought through, if the phone is overheating then that is a problem and something that should have been seen before now, but if the phone is just generally running hot I would see it as something normal when you are taxing the CPU and GPU to the limits. but if it is running hot to the point of shutting down something is wrong there.

Since this is the phone they used to build Daydream VR (only certified phone) I am sure they tested extensively. This maybe the reason for the low power version of the 821 instead of the higher performance version. The phone actually shutting off I beleive means a defective phone. Unless you just missed all the heat warning I would call Google and get a RMA before your battery goes bad permanently.

Even gear VR overheats it's just the compromise of the mobile versions for now.
Sent from my Pixel XL using Tapatalk

What if you didn't use a case, and maybe put a spacer behind the phone so when you close it there is a space behind the phone for it to breathe....and stay cooler? Can't wait to try the headset out when it comes.
Sent from my Pixel XL using XDA-Developers mobile app

I had read that Daydream on the Pixels has an exception to the thermal throttle normally enforced in order to achieve the required 60FPS for the scene, therefore enabling it to push a little harder than most other 3D applications and inevitably getting hotter. As mentioned earlier it was probably all subject to extensive testing by Google and aids in the explanation to the lower clock speeds they have chosen.
I'm fairly confident that Google was confident the heat is acceptable and considering it's the latest and greatest from Qualcomm the only alternative would be some heat pipes and heatsinks sticking out of the phone.

Same deal with the Samsung vr

Got mine, got through the tutorial and it was already very warm.
It is nothing I can picture me using it too much anyway.
I have the Pixel XL with me almost always but I am not bringing the viewer with me all that often.

I've tried just holding the Pixel XL against the VR Headset and leaving the flap down. Seems to keep temperature down a bit.
I was testing it out that way but ended up on a phone call after about 30 minutes of use. (watched about 5 or 6 movie trailers in 4k and 360).
Phone was only warm to the touch. Temperature in house usually kept around 75 degrees.
Anyone else tried this.?

LG G6 LS 993 gets hot!

I know these phones are supposed to be waterproof so I would assume airtight also. So why does my G6 get extremely hot just by putting it between armrest and car seat? Not charging, screen turned off and out of direct sunlight.
Sent from my LG-LS993 using Tapatalk

Putting my phone as described, it would disappear below the seat.
Probably you have butt-heaters in your seats.
Or your phone just heats up to body/rump temp, which is higher than that of your hands and can feel near hot when touched.

Waterproof does NOT mean airtight by any means, also doesn't mean there's a vacuum inside.
That aside, the heat still has to radiate away from the phone. You stick it between stuff, you take away its ability to radiate the heat and it ends up warming up more and more.

-Phone coulf crash and reboot without notice. Under such conditions sometimes part or all of the Dalvik/Art binaries get re-compiled on boot. This will generate heat for a short period.
-Huge amount of junk like cache files will cause almost permanent higher load, more heat and less battery time.
-On another phone i once had a bug on a custom rom causing that the cpu governor was reluctant to downclock or switch off cpu cores. It did happen, but much less frequent, most time all cores were running at highest clock, but with near zero cpu load. I noticed the excessive heat in my pocket outside in winter, before within about 4hrs the battery was drained in standby. Never saw such thing again anytime/anywhere after flashing a different version of the rom.