Database Develop

Cold weather and your phone.

Just recently moved to Chicago. I work out side quite a bit, and will be in the winter. Normally I keep my phone in my inside jacket pocket when I lived in Atlanta, No where near as cold there. Was just wondering what do you all recommend? Keep phone inside somewhere or do you think between my body warmth and the jacket, it would be fine. Not sure temp would start to damage the phone. I know when I came up here for New Years my old tour(9630) in just my pants pocket started to freak out.
Thanks for your time.
Sent from my SPH-D700 using XDA App

what u need is a hiking backpack, a generator, and a toaster to put ur phone in

Phone temp. doesn't affect much depending on how low of temperatures we are talking. anything lower than 0C (30F) I would get worried about. At lower temperatures issues with battery and LCD's happen. So I think as long as you keep it in your jacket close to your body heat it should be fine.

Yeah, in your inside pocket just body warmth will keep it safe. The only things I have noticed with cold phones is batteries discharge faster and lcds will stop responding. I have had a few phones freeze inside my truck when I leave them inside when I was hunting, but besides probably killing the batteries faster than usual I have not had any serious problems. Just warm them up before you turn them back on!

Lol @ hiking and toaster. As far as how low for temps I wouldn't think anything below 0 but then again this will bemy first winter up here working. Its not like I plan on being in the cold long. But you never know. Thanks for the quick replies. =)
Sent from my SPH-D700 using XDA App

I used my g1 in temps ranging from 110 to -10 (farenheit) with only minor issues. At warmer temps the battery seemed to discharge faster and below 20 the screen wasn't very responsive. As stated above, just keep it in an inner pocket when cold.

Welcome to Chi town. Enjoy your stay and the crappy politics. 30 degrees or below for more than an hour it goes in the inside pocket or I will stash it somewhere inside a building till I am done working outside.
good day.

Cold temperature couldn't cause serious damage to phone, only that it could sluggish, or make a fully charged one turns to low battery. You might encounter some screen problems but nothing a warm room couldn't fix. Definitely, your cellphone can surely survive a day on the slopes without worry.

[Solution] Nexus 4 overheating.

I just bought my Nexus 4 about 3 weeks ago, and noticed that it get considerably hot, and I mean, Reallyyyy hot, even when im not using.
So I've been trying out several roms and kernels and finally found the perfect solution and thought I should share it with everyone out there facing the same issue.
Just flash the latest stable version of CyanogenMod, and do not flash any extra kernels with it, leave it as it is, and notice the difference, it doesnt even heat up that much anymore, not even with extreme gaming.
Another tip, if u have touch control, or wave control installed, make sure they arnt working in the background as they keep the alot of sensors working even while the screen is off.
Just thought i'd share this.
Sent from my Nexus 4 using xda premium

problem is, threads like this keep continuing the falsity that the n4 has an overheating issue, when really it does not. its supposed to heat up with use, every similar device does, many even warmer then the n4. my question to you is, what temperatures did your nexus 4 reach that you are saying it "overheated"? cpu temp? battery temp? if it actually overheats, theres a safety mechanism in the device that will shut it down so it can cool off. plus, the n4 has that glass back, that makes it "feel" hotter than it actually is. if it had a plastic, carbon fiber, or metal back, you wouldnt really feel it.
also, very important, what is the air temperature around you?

simms22 said:
problem is, threads like this keep continuing the falsity that the n4 has an overheating issue, when really it does not. its supposed to heat up with use, every similar device does, many even warmer then the n4. my question to you is, what temperatures did your nexus 4 reach that you are saying it "overheated"? cpu temp? battery temp? if it actually overheats, theres a safety mechanism in the device that will shut it down so it can cool off. plus, the n4 has that glass back, that makes it "feel" hotter than it actually is. if it had a plastic, carbon fiber, or metal back, you wouldnt really feel it.
also, very important, what is the air temperature around you?
Click to expand...
Click to collapse
This.
Guys, just google any smartphone powered by dual+ core+overheating problem+xda and I assure you will find similar threads. The last device I didn't feel much heat on was galaxy r with tegra2 1ghz. Everything more powerful than that was noticeably warmer. But honestly I really don't think that N4 gets warmer than my old S2.
Yeah temperature around you is very important. Let's say you ride the bus on hot sunny day and check some websites. It's not browsing itself that causes overheating, but the combination of few factors. The device is actually already warmer than usual when you take it out of the pocket.

If the phone was overheating, it would turn off. Yes, it gets warm, but not as warm as you think. You only notice it because it has a glass back. Mine isn't getting any hotter than my old nexus s. Under heavy use, it doesn't go above 45C, which is an OK temp.
From a Nexus 4 bathing in Jelly Beans

To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app

My nexus 4 reached up to 77C. It never shut off or anything. I called Google and they said as long as everything still works its fine. I thought it was a lame answer but we will see. Battery got up to 56C.

younix258 said:
To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
1. Throttle temps are actual very low.
2. It's glass. Glass absorbs hest from the ambient air very easily ( it is summer for many) and from the inside of the device.
3. The phone shouldn't get to hot to hold to ear. I have never felt the display to be hot. Unless it was in direct sunlight.
4. All modern smartphone phones will throttle. Yes this one is more aggressive than most but they all do it. The amount of power all the modern high end chips can draw under load is the highest it has ever been. So they get hotter than ever. Since they are passively cooled, even the best designed phone under full load will throttle.
5. The only good reason for threads like this is to inform the user there isn't a problem. There are no issues.

younix258 said:
To all three responses above me:
Fine it might not overheat to the point of melting or burning or even getting damaged but it does reach throttle temps and get uncomfortable to touch at times. Both of these are issues. Your phone should not be too hot to keep on your ear during a conversation, nor make your palm sweat excessively from holding it. It would also be ideal if your quad phone 1.5GHz phone stayed at 1.5GHz when under load. If it is forced to go below that, there is a good reason for threads like these.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
thats the thing, its not a phone. its much much more than that. you ever feel how hot a laptop could get? anyways, i do agree with you with one point, that lg, or google, chose to set the cpu throttle temperature too low as a default. having root, i choose to disable thermal throttle, so i never have an issue with with my cpu being throttled down. i sympathize there with non rooted users. but thats only a software fix(the difference is changing a Y to a N in a file), thats not an issue with the n4 overheating.
---------- Post added at 02:07 AM ---------- Previous post was at 02:03 AM ----------
albundy2010 said:
1. Throttle temps are actual very low.
2. It's glass. Glass absorbs hest from the ambient air very easily ( it is summer for many) and from the inside of the device.
3. The phone shouldn't get to hot to hold to ear. I have never felt the display to be hot. Unless it was in direct sunlight.
4. All modern smartphone phones will throttle. Yes this one is more aggressive than most but they all do it. The amount of power all the modern high end chips can draw under load is the highest it has ever been. So they get hotter than ever. Since they are passively cooled, even the best designed phone under full load will throttle.
5. The only good reason for threads like this is to inform the user there isn't a problem. There are no issues.
Click to expand...
Click to collapse
you look familiar to me, where have i seen you..

Waiting for you to post the solution on how to use the volume buttons on the side of the phone.

What do you expect with no laptop class ventilation?
Sent from my Nexus 4 using xda app-developers app

youssef.sala7 said:
I just bought my Nexus 4 about 3 weeks ago, and noticed that it get considerably hot, and I mean, Reallyyyy hot, even when im not using.
So I've been trying out several roms and kernels and finally found the perfect solution and thought I should share it with everyone out there facing the same issue.
Just flash the latest stable version of CyanogenMod, and do not flash any extra kernels with it, leave it as it is, and notice the difference, it doesnt even heat up that much anymore, not even with extreme gaming.
Another tip, if u have touch control, or wave control installed, make sure they arnt working in the background as they keep the alot of sensors working even while the screen is off.
Just thought i'd share this.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
My N4 get realy hot too, when i'm outside (38C-42C) i can't talk because it burns my years but i see MIUI and 4.3 the heatting issue is gone, i mean it's still hot sometimes but not burning.
I've got a Optimus Black when it first appeard and i got even hotter...

Actually, the Nexus 4 is more prone to overheating than, say, the almost identical Optimus G. Something about a small space in the Nexus 4 somewhere that doesn't conduct heat as efficiently away from the SoC, unlike the Optimus G.
However, like said before, it is summer for most people and it got hot in the UK, so your phone will be warmer than usual if left in the pocket or in the sunshine, but you can't expect to use a phone that's running at 55C-60C by only browsing, can you? Have you guys noticed the drastic temperature difference between wifi usage (low temps) vs data usage (high temps)? This pattern is present in most if not all phones but not as drastic as this, no way.
Then again, sometimes Franco's app is reporting 40-45 C and the phone feels really cool to the touch, and another moment, it's reporting 38 C and the back feels hot, so there's lots of factors that play in this.
Make sure you keep the phone out of the sun, and use Wakelock Detector to see if any rogue apps are holding a dirty wakelock doing lots of syncing especially over data (recent Whatsapp versions have been producing fullsync wakelocks with me everyday).
Disclaimer: other than hot weather and normal heating of the phone, i have not experienced any abnormal overheating, but have a friend who has. My normal temps are 34 C - 38 C, even in hot weather with most of my usage on wifi. Outside in hot weather gets to 42 C - 44 C but that's understandable.

coolnow said:
Then again, sometimes Franco's app is reporting 40-45 C and the phone feels really cool to the touch, and another moment, it's reporting 38 C and the back feels hot, so there's lots of factors that play in this.
Click to expand...
Click to collapse
this thought that coolnow just had..
feel doesnt report a temperature, feel only shows that something is warmer than/cooler than whatever body part you are touching it with. its all relative to your body temperature. try this experiment.. get 3 glasses of water, one hot water, one ice water, one room temperature water. at the same time, stick one hand into the hot water and the other in the ice water. keep them in there for a minute. now pull both of your hands out and stick them both in the same glass of room temperature water at the same time. this will mess with your senses, so be warned! the hand that was in the hot water, will feel the room temperature water to be cold, the hand that was in the ice water will feel the room temperature water to be very warm, while they are both in the same glass of water. so you see, reporting how something feels is very inaccurate and unreliable.

As simms22 point out about the feel, that is a terrible way to judge it.
Also so is the actual number from franco's app. His app measures the cpu (Soc) temp. It doesn't also include the battery temp. The higher battery temp will make the phone feel hotter even if the cpu temp is basically the same. Example when changing from the wall. It's also much larger than the SoC so it warms up a gesture surface area more quickly than just the SoC.
It's also located on the middle to lower part of the phone where it is more common to have your hand. Compared to the near the top / camera location for the SoC
Another thing that is obvious but I never mentioned. Is the phone is black. A black glass phone in summer sunlight ( on a call holding the phone up to your ear) will get hot. Even if the thing was turned off.

simms22 said:
this thought that coolnow just had..
feel doesnt report a temperature, feel only shows that something is warmer than/cooler than whatever body part you are touching it with. its all relative to your body temperature. try this experiment.. get 3 glasses of water, one hot water, one ice water, one room temperature water. at the same time, stick one hand into the hot water and the other in the ice water. keep them in there for a minute. now pull both of your hands out and stick them both in the same glass of room temperature water at the same time. this will mess with your senses, so be warned! the hand that was in the hot water, will feel the room temperature water to be cold, the hand that was in the ice water will feel the room temperature water to be very warm, while they are both in the same glass of water. so you see, reporting how something feels is very inaccurate and unreliable.
Click to expand...
Click to collapse
That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference).

coolnow said:
Wow, it took you 158 words to get to my point? That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference). But thanks anyway for your useless post :good:
Click to expand...
Click to collapse
In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.

snapper.fishes said:
In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.
Click to expand...
Click to collapse
Somehow, i took his post as heavy sarcasm. I've edited my post.

coolnow said:
Wow, it took you 158 words to get to my point? That's exactly what i'm saying, reporting what you feel, especially on a glass backing that the Nexus 4 has, is inaccurate (and everyone who went through highschool biology knows our sense of temperature is just a measure of temperature difference). But thanks anyway for your useless post :good:
Click to expand...
Click to collapse
snapper.fishes said:
In case you didn't notice, Simms22 was not arguing against you but supplementing your arguments instead. In layman's term, you are both playing for the same team. So stop fighting amongst yourselves.
At this point I think we can all agree that in terms of actual temperature the Nexus 4 is not (much) hotter than other phones with similar specs. However, there is probably something about the design and/or materials used that causes people to worry (and complain) about the phone overheating. Now if you good folks want to figure out what actually causes the phone to "feel" hotter in comparison to other phones, feel free to proceed. I have no doubt that it will become an interesting topic.
Click to expand...
Click to collapse
really, i wasnt arguing with you, i was backing you up, explaining, because unfortunately most people dont know that feel is just a measure of temperature difference.
what i think the issue is, is that lg(or google) had the cpu throttle temp set too low on stock devices, giving people a noticeable reduction in performance within a normal temperature range, plus the whole glass back thing, therefore freaking out many. enjoying the freedoms of root access, i disable thermal throttle, so i dont notice any of the affects that the throttle would cause.
---------- Post added at 04:30 AM ---------- Previous post was at 04:29 AM ----------
coolnow said:
Somehow, i took his post as heavy sarcasm. I've edited my post.
Click to expand...
Click to collapse
and im out of thanks, but thanks

It is true that the Nexus 4 is heating more that other devices, it has been know even before its release. I had them too at first, when using heavy apps or games. But some roms and kernels make it heat more than normal because they are putting the cpu freq constantly at the max (1.5 GHz), that's why some users have problems constantly. I use the Paranoid Android rom, which is pretty light speaking of cpu usage, and franko kernel putting the max cpu freq at 1Ghz, also lowering the voltages. It helps a lot.

Every device I've ever had, htc desire, archos 70it, galaxy s2, galaxy s3, galaxy tab 10.1, nexus 7, nexus 4 and nexus 10 all have a new thread like this every week, just because the device "feels" hot. All our SoC are so powerful these days do have a high TDP and that's made worse by our SoC's relying on passive cooling. We won't have cool CPU's anytime soon, unless you want a fan or any other active cooling mechanism. Anything under ~80C is fairly safe for modern SoC's and isn't really anything to worry about. When you CPU get's too hot it will aid passively cooling by thermal throttling the CPU to a lower Frequency and if it carries on going up, then it will shut down before any damage is done. With all my devices I've done the same test, Undervolt, turn stress test on when SoC is at ideal temp and time how long it take to reach a certain temp. Repeat the experiment several times. I found that my nexus 10 heats up by far the fastest, thanks 32nm A15's and the nexus 4 was one of the coolest, only being beaten by my galaxy tab 10.1, 40nm dual core A9. To be fair, I do have a faster binned chip. Even my 1.4ghz exynos 4412 s3's core temp was higher than the n4's, you just couldn't feel it as much through the plastic. The nexus 4's heat dissipation even with the minor fault compared to the optimus G is reasonably good.

Please help me solve this once and for all....

I'm going to put short sentences for quickness
Bought N6 off Mobile Phones Direct. Good service. No issues.
Phone charger starts whittling.
Motorola replace charger.
Phone slowly develops symptoms of dodgy battery within 6 weeks:
Expanding battery, case pulling away, red hot charging and draining fast.
After lots of liaison with Motorola who did their best to suggest it was my apo usage they eventually take it for repair. I sent it off ' immaculate ' apart from the fault.
Despite me sending loads of documented online proof that devices like this are being replaced, the Phone comes back 'repaired' not replaced which disappointed me.
Any way I get it back a week later, and initially the phone seems better; apparently it's had a new back and battery.
However I noticed the back was not flush. About .5mm out in alignment and its slightly raised.
In addition, the phone battery gets up to 40 odd degrees when charging and at times it's not pleasant to touch, it's that hot when charging. This is how it all started in the first place!
They've offfered to take it back 'again' and do a ' sort this once and for all ' repair.
I just feel hard done by here. The phone was brand spankers in April and 3 months down the line it's in for a second repair and Motorola aren't even considering replacing this obviously dodgy handset.
If this second repair isn't perfect and working satisfactorily, surely I have some sort of legal rights here to demand a replacement under the not fit for purpose sales of goods act ?

Xperia23 said:
In addition, the phone battery gets up to 40 odd degrees when charging and at times it's not pleasant to touch, it's that hot when charging. This is how it all started in the first place!
Click to expand...
Click to collapse
40C, you do realize that a human body on average is at 37C?? 40C isnt even close to being considered hot. when charging, 40C can be considered cool, not hot. lol.

Yeh I realise this I'm just saying that the CPU temp app suggests that temp, but to touch the phone is red hot. Like a cup of tea after its been sat for 10 mins Max.
Thanks for the condescending tone though.

Red Hot suggests burning your skin off. Red Hot would melt the device.
The device is going to get somewhat hot. Not red hot as you suggest.
If that were the case, you would easily be able to separate the glass from the LCD and also pull the LCD from the frame.

Xperia23 said:
Yeh I realise this I'm just saying that the CPU temp app suggests that temp, but to touch the phone is red hot. Like a cup of tea after its been sat for 10 mins Max.
Thanks for the condescending tone though.
Click to expand...
Click to collapse
unfortunately, feel isnt an accurate way to discuss temperature. all feel does is show you whats warmer or cooler than what you are feeling with. and that has nothing to do with my tone towards your issie, it just is what it is. i read people complaining constantly that their phone reaches 40C(lol). well, guess what, it can get much hotter normally, up to 100C, thats 212F, or the boiling point of water.
i feel bad for you about your issue, but that happens. but 40C when charging has nothing to do with it.

I'd send it back for the second look-see, since you feel that the back is out of alignment (picture, please?)
I'd offer that the heat issue doesn't seem extreme for a phone, depending upon how it's being charged (e.g., fast charge). Also, do you keep this in any sort of case, perhaps?
I've actually never used the Motorola charger, instead I use a USB 99% of the time. I do recall reading about battery issues with a minority of folks who used the fast charger, so perhaps that's what you initially hit?
- ooofest

For starters the app might be inaccurate but all I know is the phone to touch is considerably hot. Heat kills battery life or increases degradation so therefore it won't be long at this rate, before I need another new battery. My point is this is how it all started and its starting again. Motorola seem quite happy to keep repairing. My simple question was where you feel I stand before claiming unfit for purpose. In a 2 year contract I expect the phone to be reliable but i have no trust in this device. I'll send it back see what they do. Probably another case and send it back.

Xperia23 said:
For starters the app might be inaccurate but all I know is the phone to touch is considerably hot. Heat kills battery life or increases degradation so therefore it won't be long at this rate, before I need another new battery. My point is this is how it all started and its starting again. Motorola seem quite happy to keep repairing. My simple question was where you feel I stand before claiming unfit for purpose. In a 2 year contract I expect the phone to be reliable but i have no trust in this device. I'll send it back see what they do. Probably another case and send it back.
Click to expand...
Click to collapse
and unfortunately, touch does not give you a temperature reading. ok, try this experiment, itll show you about touch and temperature. get 3 glasses of water, one cold, one hot, and one room temperature. put your left hand in tbe cold water and your right hnd in the hot water. keep them there for about 3 minutes. then take out both hands and put both hands into the room temp water. your left hand, which was in cold water, will now feel warm. and your right hand, which was in hot water, will now feel cool. yet they both are in the same temp water.
anyways, send it back, and a hope for a better future from me to you

Right.....Thanks for that. However I know the difference from a phone thats warm to touch and overheating. I expect warm, but I know the phone should be getting this hot, end of. I'm not the only one as well with this issue... Just do a google search. See for yourself. Clearly im pissin in the wind here.

Xperia23 said:
Right.....Thanks for that. However I know the difference from a phone thats warm to touch and overheating. I expect warm, but I know the phone should be getting this hot, end of. I'm not the only one as well with this issue... Just do a google search. See for yourself. Clearly im pissin in the wind here.
Click to expand...
Click to collapse
battery bloating, no you weren't the only one. with a heat issue, you are. sure, you can google and find people that think they have heat issues with the device, but in reality, the issue is in their heads.

Like you said pissing in the wind. Good luck getting help just ridiculed

Mobile Phone Direct in the end replaced - as I was told it fell to the retailer regardless of 28 days or not, if its within 6 months in the UK it falls to the retailer in cases like mine with faulty products. In the end, after sending the phone off to the retailer, they replaced it with a new one one, no issues - took long to get there, but I did in the end.
The new one was perfect throughout my contract. Not a single overheating issue - although it did get warm when charging (nothing like before) and the battery and back cover remain fine.

A little worried about my device...

Hey there, i just recently bought an lg g6, and ive been rlly enjoying it. Recently i had to leave my phone in the glovebox of my car ( it was turned off) and the weather outside was 64c outside, and im guessing even hotter in my glovebox (my car was parked in the sun), so should i be worried about any damage to my phone, and can i keep putting it there because its the only place i can put it cus of where i work..

I don't think you have to worry. The internals of the phone itself can withstand high temperatures, with processor temperatures/battery creating a lot of extra heat, so that is factored in. As long as the screen, etc is not in direct sunlight, you shouldn't worry.
Ideally though you'd not want it to get too hot to preserve the life of the battery... but with it being "off", that may not effect anything.
An easy enough solution though would be to get to a sun visor and point the reflective side out. This will reduce cabin temperature and protect not only your electronics, but will keep your interior in good condition as well (especially if the rest of your car is tinted). Just buy a decently thick one. I use one with a nice matte on the other side. Once you get used to using one, it takes only a few seconds to remove/replace.
You can reverse it in winter to keep your car cabin from getting too cold as it will allow some extra heat in.

maruichan said:
I don't think you have to worry. The internals of the phone itself can withstand high temperatures, with processor temperatures/battery creating a lot of extra heat, so that is factored in. As long as the screen, etc is not in direct sunlight, you shouldn't worry.
Ideally though you'd not want it to get too hot to preserve the life of the battery... but with it being "off", that may not effect anything.
An easy enough solution though would be to get to a sun visor and point the reflective side out. This will reduce cabin temperature and protect not only your electronics, but will keep your interior in good condition as well (especially if the rest of your car is tinted). Just buy a decently thick one. I use one with a nice matte on the other side. Once you get used to using one, it takes only a few seconds to remove/replace.
You can reverse it in winter to keep your car cabin from getting too cold as it will allow some extra heat in.
Click to expand...
Click to collapse
Yeah thank you i will definitely do that, i was a little worried about the battery and screen but it seems like i shouldnt be worried, thanks alot i appreciate it!

I would also be careful because people have reported with change of temperature the camera glass have cracked. Example is going from air conditioning into the heat or vice versa.

Low temperature shutdown issues

Hi
I am into hill walking and mountaineering. I am finding that my note 8 will shutdown if the temperature is below about -5C and I start the camera to take some pics. Once it's shutdown, it will refuse to start until warmed up, and needs a soft reset. It also comes back with 5% showing in the battery but had 80% at the time of shutdown.
It's rather a pain in the neck. My old Xperia Z5, Z3C and Z1 would do -20C without ever having issues.
I am assuming this is just an annoying 'feature' of Samsung devices rather than a fault.
I am thinking of running a background number crunching app to prevent deep sleep! Samsung is not interested, wondered if others had the same issue. If I stick my old Z5 and the Note 8 in my freezer at -15 for an hour the note 8 shuts down, but the Z5 carries on as normal. Prob down to cheap/nasty battery tech in the note 8.
Nigel

That is interesting. I'm going to northern Japan this Sunday for 3 weeks. It will be snow and freezing cold. I'll report back how my Note 8 works there. I really hope mine won't shutdown when i really need to use it.

veletron said:
Hi
I am into hill walking and mountaineering. I am finding that my note 8 will shutdown if the temperature is below about -5C and I start the camera to take some pics. Once it's shutdown, it will refuse to start until warmed up, and needs a soft reset. It also comes back with 5% showing in the battery but had 80% at the time of shutdown.
It's rather a pain in the neck. My old Xperia Z5, Z3C and Z1 would do -20C without ever having issues.
I am assuming this is just an annoying 'feature' of Samsung devices rather than a fault.
I am thinking of running a background number crunching app to prevent deep sleep! Samsung is not interested, wondered if others had the same issue. If I stick my old Z5 and the Note 8 in my freezer at -15 for an hour the note 8 shuts down, but the Z5 carries on as normal. Prob down to cheap/nasty battery tech in the note 8.
Nigel
Click to expand...
Click to collapse
That's a lil concerning -5C = +23F. Last week it was negative -10F here. I was shoveling snow for about an hour, big driveway/sidewalk path aka snowblower needs fixed. I took a few pics and took some calls/text. No shutdowns here. Now at the same time shoveling snow takes a lot of work so maybe my body heat was keeping it warm in pocket.
But at the same time the same could be said about what your doing and body heat idk. We need more people to chime in.
Oh bonus people in hot climates don't be afraid to chime in. Curious how this phone handles the heat. Gets cold here in winter, but really hot and mushy in the summer.

Hi
Mine is not in a pocket, but rather mounted to a chest strap on rucksack so it gets full force of cold and wind - exactly the same as my old Z5 - reason: it is also my GPS for walking and ski-touring. Maybe you can leave yours out in the cold exposed for an hour, then try taking a photo and see if it shuts down?
Nigel

veletron said:
Hi
Mine is not in a pocket, but rather mounted to a chest strap on rucksack so it gets full force of cold and wind - exactly the same as my old Z5 - reason: it is also my GPS for walking and ski-touring. Maybe you can leave yours out in the cold exposed for an hour, then try taking a photo and see if it shuts down?
Nigel
Click to expand...
Click to collapse
You could put it in a crown royal bag with a handwarmer. Would probably keep it warm enough. I live just 80 miles south of Canada in the PNW. It was 7 degrees last week. I left my phone in my car for a while and it was fine. It was really cold, but still working.

it's a glass phone. there is nothing under the glass but the components. that's the difference between it and your sony phone. glass is not a great insulator

Aye, might offer a work-around but not a particularly convenient one. I'll be back with Xperia end 2018 when I am due an upgrade. The phone only appears to actually shutdown when the camera is started while its cold. Must be high current draw, causing a voltage drop that gets detected and the device gets shutdown. Love the screen and pen, and camera, moved from Xperia after three separate devices as they looked old fashioned with their HUGE bezels, and refusal to adopt wireless charging.

It was 2 degrees F here in Nashville TN last week, but I stayed indoors and didn't go outside for any length of time to see how my phone would have been affected. Had some friends who went to the Jacksonville/Tennessee football game a couple of weeks ago.........16 degrees; they left early because they couldn't feel their limbs even with multiple hand/foot warmers...............I wonder how they kept their phones warm.

WaxysDargle said:
it's a glass phone. there is nothing under the glass but the components. that's the difference between it and your sony phone. glass is not a great insulator
Click to expand...
Click to collapse
Its a glass phone in a heavy duty rubber case that I stuck it in! Both phones have a glass front! The wee bit of alu on the rear of the Z5 vs the glass on the Note 8 should not equate to a 15C difference in the temperature the device can withstand while continuing to function. I suspect the real reason is inferior battery tech vs Sony, and over-zealous low voltage detection and device shutdown.
I note that my Samsung 360cam also shutdown due to the cold this weekend gone, but my GoPro kept working.
Nigel

veletron said:
Its a glass phone in a heavy duty rubber case that I stuck it in! Both phones have a glass front! The wee bit of alu on the rear of the Z5 vs the glass on the Note 8 should not equate to a 15C difference in the temperature the device can withstand while continuing to function. I suspect the real reason is inferior battery tech vs Sony, and over-zealous low voltage detection and device shutdown.
I note that my Samsung 360cam also shutdown due to the cold this weekend gone, but my GoPro kept working.
Nigel
Click to expand...
Click to collapse
this could be a result of sammy overcompensating for their note7 debacle last year. the fact that root limits my battery at 80% says a lot.

WaxysDargle said:
this could be a result of sammy overcompensating for their note7 debacle last year. the fact that root limits my battery at 80% says a lot.
Click to expand...
Click to collapse
Isn't that 80% thing due to locked bootloader on Snapdragon? Root on Exynos doesn't have 80% issue, so not sure it's related to those Note 7 problems. The camera issue itself might still be though.

sefrcoko said:
Isn't that 80% thing due to locked bootloader on Snapdragon? Root on Exynos doesn't have 80% issue, so not sure it's related to those Note 7 problems. The camera issue itself might still be though.
Click to expand...
Click to collapse
you're right, it is due to locked bootloader and the detection of root. it is no mistake that 80% is the cap when rooted. samsung did that on purpose. it started on models released after the note7, which is why i suspect they are weary of battery troubles, and if you root and begin to alter the system, the chances of an incident go up.
what camera issue are you referring to?

veletron said:
Hi
Mine is not in a pocket, but rather mounted to a chest strap on rucksack so it gets full force of cold and wind - exactly the same as my old Z5 - reason: it is also my GPS for walking and ski-touring. Maybe you can leave yours out in the cold exposed for an hour, then try taking a photo and see if it shuts down?
Nigel
Click to expand...
Click to collapse
I will do that for you. I have a porch on my 2nd floor room. We're supposed to get 6-9 inches again this weekend with below temps close to 0 F maybe below. I will leave it out for an hour then try to use it. Probably will have same problem as you I am guessing.
Especially when phone is exposed like you pointed out and no body heat to keep it warm. Like others pointed out which forgot glass sucks for insulation. But at the same time I thought the note had a few layers of glass? The best house windows are double and tripled layers sumtimes more. They offer good insulation.

WaxysDargle said:
you're right, it is due to locked bootloader and the detection of root. it is no mistake that 80% is the cap when rooted. samsung did that on purpose. it started on models released after the note7, which is why i suspect they are weary of battery troubles, and if you root and begin to alter the system, the chances of an incident go up.
what camera issue are you referring to?
Click to expand...
Click to collapse
Great, thank you for confirming. The camera issue was the one mentioned by OP regarding trouble in colder temperatures. I just meant that while the 80% battery limit wasn't related to battery concerns or safety measures, I can't say with the same certainty that the camera issue described by OP isn't somehow related to that.
Nick216ohio said:
I will do that for you. I have a porch on my 2nd floor room. We're supposed to get 6-9 inches again this weekend with below temps close to 0 F maybe below. I will leave it out for an hour then try to use it. Probably will have same problem as you I am guessing.
Especially when phone is exposed like you pointed out and no body heat to keep it warm. Like others pointed out which forgot glass sucks for installation. But at the same time I thought the note had a few layers of glass? The best house windows are double and tripled layers sumtimes more. They offer good installation.
Click to expand...
Click to collapse
Maybe triple pane windows are made from a special type of glass? Or perhaps the spacing between those layers provides insulation not present on our phones? Not sure, just speculating here...

sefrcoko said:
Great, thank you for confirming. The camera issue was the one mentioned by OP regarding trouble in colder temperatures. I just meant that while the 80% battery limit wasn't related to battery concerns or safety measures, I can't say with the same certainty that the camera issue described by OP isn't somehow related to that.Maybe triple pane windows are made from a special type of glass? Or perhaps the spacing between those layers provides insulation not present on our phones? Not sure, just speculating here...
Click to expand...
Click to collapse
Yeah idk crap a bout house windows lol. You're right they're made out of special glass I believe and spacing exists. Would think even few layers of glass would make some difference in phone? But I am no expert on glass and insulation. So I will just shut up lol.

glass,plastic,metal or whatever material wont do any difference in cold weather with prolonged exposer.( case or no case)
if it takes 10 minutes to get to minus 5 or if it take 30 minutes, you still will get there. the question at hand is at what temp does the phone stop( if it acctualy does).
i think this is the data we are looking for.

Little more insight
https://www.google.com/amp/s/amp.usatoday.com/amp/860460001

It happed recently two times with my S9 Plus at around 0C temperature both time battery was above 50% and after restart it was at 2 percent. i don't know why the this happened at this "happy to work" temprature.