Database Info

Battery Temperature

I was reading up on the article about Lithium batteries on BatteryUniversity and it said that 30 celsius is the ideal temperature for the phone, especially when it is charging.
My phone is normally at 23 C during standby, and quickly goes to around 30 in light usage. If I start playing games then it hits 37 C. Rare times it goes up to 40.
I am wondering if my temperature readings are normal, compared to other XT users.
Any tips on how to lower the temperature is appreciated as well. My biggest problem is when I start getting texts just early in the day and my phone starts over heating from them. Sometimes when I get texts while it is charging it goes up to 36-37. I don't know if it has to do with my app (handcent) but I never expected MMS to be such a "battery heater".
I run music apps all the time and it always stays at 30-32, but then once I start texting, bam. 37.

I've had mine hit as high as I believe 48C, but that was really pushing it and with a 100MHz overclock.
Typically any app that requires processing power will make it heat up a lot.
It may be a good idea to use a CPU manager.

You don't really need to sweat it (pun intended). No matter what you do, the CPU will have to work, thus creating heat. The only time you really have to worry about it is when it gets around 50°c. At that point you have to really worry about frying your processor. I have gotten mine up to 54°c and nothing happened. Freaked out, yes and put the phone down to rest for about an hour. Biggest thing that causes temp to go up, believie it or not, is the display. I can listen to an entire baseball game with the screen off and temp will hover around 113°f. Screen on and it goes way up really fast. SetCPU had a profile that will throttle back CPU when temp gets too high. Cool widget is Batstat. It'll show charge, voltz and temp in f/c°.

my phone's usual starting temperature (while phone is doing nothing) is around 30-32 degrees. I believe that it's due to warm climate where I live( room temperature during day is like 30 degrees) after playing a graphics intensive game for 5-10 min, phone temp will reach 40 degrees. Is that normal?
Sent from my Milestone XT720 using XDA App

yeah, thats wat i'm wondering too. But then the post above u said as long as its not over 50 then its fine. I've read for other phones it goes up to 60/70 sometimes, so i guess i'm just over wondering.

my average temperature when i just pick up my phone is around 32degrees unless im in an air conditioned room... it usually heats up to 35-37 while im using it to do light stuff like facebook and twitter. my phone gets very hot only when i use my 3g network or when i am downloading a lot of apps from the market. i dont play games.

I am under 40°C with OC to 820mhz. I can have 40°C when I use gps on car when there is a lot of sun.
PS : I you want to stay at 40°C, you can use setcpu and underclock phone when battery temperature is higher.

On standby, my phone is at about 30 degrees. After light usage, it goes up to 37 degrees, which I guess is normal...
I once had my phone go up to 52 degrees. OC'ed to 1.2GHz and was running a game.

Running hot

I find that frequently my Q runs hot. There doesn't seem to be a pattern to when it happens, but often it's hot enough that it's a bit uncomfortable in my pocket. Anyone else?

rustydetroit said:
I find that frequently my Q runs hot. There doesn't seem to be a pattern to when it happens, but often it's hot enough that it's a bit uncomfortable in my pocket. Anyone else?
Click to expand...
Click to collapse
Before I turned off LTE the phone got extremely hot, since then it's only occasionally reached uncomfortable levels (~104F battery temp according to my widget) and each of those times was when I was in a marginal signal area without WiFi data. Bluetooth with WiFi looking for a signal also seems to get it a little hot (maybe 102F), but nothing like the Evo Shift which would hit 108F under the same configuration!

I have mine temps set to C but the other day it got up to like 64 degrees. Not sure what that is in degrees F but I know its dangerously high.

What temp are you monitoring? To me 64C could only be cpu core, which would indeed be high but not dangerous to the chip (my desktop core routinely hits 90C as does my GPU when stressed, I run a minimal fan speed passively cooled rig for noise reasons). Most components can hit 110C internal temp without damage. However batteries don't like getting above 40C much at all, nor does human flesh.
Sent from my XT897 using xda app-developers app

afidel said:
What temp are you monitoring?
Click to expand...
Click to collapse
Supposedly that's battery temp. At least according to SetCPU. I figure its off somewhat cuz it reports my processor upwards of 300 C and I know that's not right. But I have a case on my phone and when its reading high battery temps the back of my phone is hot (not just warm)

I Keep wifi off, and when in poor service areas my phone gets hot. If I put it in forceroam, then she is fine.

My wifi is rarely on. Occasionally my temps get a little warm but not too bad. Any time I use wifi tether it climbs though.
Edit: After re-reading arggghhh's kernel thread i realized the kernel i was using has the gpu overclock attempt. Flashed back to version .04 and its still getting a little warm but nothing ridiculous. Haven't used wifi tether yet so i cant report on those temps.

What are your CPU and batt temperatures?

Just wanna ask around to check if I'm the only one who feels my phone is a tad bit too hot?
Usually when not charging , the batt temps are around 34-38°C, with the CPU in the range of 38-45°C
When charging the batt goes up to 38°C - 44.7°C or even overheating in the 45-50°C range( ok this would be my fault in using heavier apps)
And the CPU would stay in the range of 40°C - 55°C even without use sometimes

Those temperatures aren't out of the ordinary for this device, that's pretty normal actually. I've had my battery temperature go between 50-55°C fairly regularly, and even as high as 66°C without the phone shutting down (I did cool it down very quickly upon seeing how hot it was though).
Sent from my Evita

timmaaa said:
Those temperatures aren't out of the ordinary for this device, that's pretty normal actually. I've had my battery temperature go between 50-55°C fairly regularly, and even as high as 66°C without the phone shutting down (I did cool it down very quickly upon seeing how hot it was though).
Sent from my Evita
Click to expand...
Click to collapse
Thanks timmaaa, for a moment I thought I was the only one.

I use Battery Mix to record my temperature vs. Battery % over time (use the JB feature to disable its persistent notification): https://play.google.com/store/apps/details?id=jp.smapho.battery_mix&hl=en
One thing I've noticed is that when it hits 40C+, the space below the camera becomes extraordinarily hot! This happens at least once during a work day, especially happens when I don't touch the device.
When this happens, the drain rate just plummets (when I refer to the battery level slope vs. the phone temperature). However, a reboot fixes the heat (and as a result, the drain rate) over a lengthy amount of time.
I've heard of this, but haven't gotten around to trying it successfully:
http://forums.androidcentral.com/ht...g-red-while-charging-rapid-battery-drain.html

That shouldn't happen while you're not using the phone. Have you used an app like BetterBatteryStats to identify what's draining your battery?
Sent from my Evita

well this was previously answered by timmaa i had a similar concern cause none of my earlier phone actually felt that warm...
but when i got a green signal that these are normal temperatures, i tried gaming for almost an hour turns out the phone was hot indeed the battery was around 50+ but still the phone dint shut down itself or showed any inconsistency in its functions!
moral of the story.. it happens with everyone.. my friend has a endeavor it also suffers from heating... its so normal that if u search it in google that "why does ht one x get..... "it automatically completes it in with " get hot"(also for the new One).
if you want to cool it down get SET CPU and create a profile in which select battery temperature/cpu temperature at a certain temperature you don't want your phone to exceed and then set the cpu to a lower speed typically till 1026 or 1134...
but again if u feel its necessary cause doing so will obliviously slow down the device.:angel:

Sonone said:
moral of the story.. it happens with everyone.. my friend has a endeavor it also suffers from heating... its so normal
Click to expand...
Click to collapse
Of course its normal. All computers generate heat as power is discharged. Manufacturers are also packing more and more computing power into these small devices, and in general that means more heat (although there are other variables). And every smartphone is designed to deal with the heat differently, so those might be some reasons why your previous phones did not feel as warm.

redpoint73 said:
Of course its normal. All computers generate heat as power is discharged. Manufacturers are also packing more and more computing power into these small devices, and in general that means more heat (although there are other variables). And every smartphone is designed to deal with the heat differently, so those might be some reasons why your previous phones did not feel as warm.
Click to expand...
Click to collapse
true that!!
even i was actually worried before hearing about it being normal from u and timma as well!
its probably htc one x is build that way.
BTW sorry a little off topic since this issue has already been resolved has anyone heard a little rattling sound near the camera region only when the phone is sharked up and down (from screen to back)
this also is a build issue!

Sonone said:
BTW sorry a little off topic since this issue has already been resolved has anyone heard a little rattling sound near the camera region only when the phone is sharked up and down (from screen to back)
this also is a build issue!
Click to expand...
Click to collapse
Totally normal. Just a moving part in the camera module. Likely related to autofocus as you can sometimes hear a sound when focusing the image.
Sent from my HTC One XL using xda app-developers app

Does the device get hot?

Does it get hot under normal usage? How much degree celcius are you getting while doing basic task and watching video?

No no heat problems on mine. I believe Sony has introduced new technology for the heat problem.

ali_bobo said:
No no heat problems on mine. I believe Sony has introduced new technology for the heat problem.
Click to expand...
Click to collapse
Can you tell me what degree celcius of the CPU and battery when doing basic tasks

linkzex said:
Can you tell me what degree celcius of the CPU and battery when doing basic tasks
Click to expand...
Click to collapse
Both sitting on average 28 Degrees.

ali_bobo said:
Both sitting on average 28 Degrees.
Click to expand...
Click to collapse
Does it get warm while watching 4k content? Like in this video https://youtu.be/cjApm_Stl5Y

linkzex said:
Does it get warm while watching 4k content? Like in this video https://youtu.be/cjApm_Stl5Y
Click to expand...
Click to collapse
Nope no signs of phone getting warmer. Played perfectly fine.

My XZ or XZs didn't get hot or even slightly warm, exactly the same deal with this, I would say it runs even cooler!

That link only offers me a max of 1080/60 not 4k

cliffr39 said:
That link only offers me a max of 1080/60 not 4k
Click to expand...
Click to collapse
Because video in link is recorded to 1080/60fps...

The phone is runs cool and somehow has what's turning out to be quite a long battery life
Sent from my G8141 using Tapatalk

Well, I have been testing my XZP for two now. It is getting warm - definitely. If you put it under extreme load, it´s getting warm, even that warm your palms get a little sweaty - but not uncompfy warm. My LG G4 in comparison got that hot you´d barely wanna touch it.

Look for an app on Google play called "epic citadel" and run it.
Left it going for about 30 minutes and walked around a bit. Phone got Luke warm. Used 8% of the battery.

Not so much hot to me
Sent from my G8142 using Tapatalk

Any and all computer(s) CPU's will get warm to hot depending on the load. This is the nature of the beast. But mine does not get warm at all the way I use it. My battery life is phenomenal!

Gets warm if you play games for a long period, but nowhere near hot. Also I noticed that, compared to my old phone, the warmth is pretty much the same on the entire back. It's not just hot where the chipset is. All in all, the phone is awesome regarding heath control.

The phone does get hot after a while.
It's cool most of the time, and even if it gets hot, it has great cooling so leaving it alone cools it off in minutes.
As for the temperature, i was doing a stress test the other day (3D) and the phone seems to have capped at 38-39 Celsius degrees (that is slightly higher than body temperature so you can definitely feel it). I didn't check temperature after that though.
It also gets warmer while both watching and shooting at 4K, or high speed (even 1080p though).
However trust me, if you had the Z3 Compact like I did, that phone was a freaking furnace. My battery was affected by it. If want to use my Z3C as a gps in my car, i have to shove it in front of the AC to keep it cool otherwise I'm afraid it's going to evolve into a Samsung Galaxy Note 7.
So this phone is a big big improvement. Though I'd like a phone someday that definitely doesn't get hot. But maybe that's too much to ask.
As I'm typing this, after about 30 minutes of active use, my battery is 35 celsius degrees. From normal use.

A cell phone is just too small to dissipate heat in a very efficient manner. That is why super fast, and powerful, gaming desktop PC's have several fans installed in them along with huge heat sinks sitting right on top of the CPU. The heat sinks are larger than this entire phone! I am an IT Systems Engineer and if you've ever had the opportunity to go to a large data center where servers are housed you will quickly notice the high volume of moving air in the entire area. It can even get quite cold in some data centers all for the same reason... Computers can get very hot! So the fact that OEM's can keep these things as cool as they do, with the CPU housed in such a small, airtight space, is really a marvel of engineering.

Hello , the phone doesn't get hot like my z2 is used to be , I've managed twice to get the phone (on purpose) , but with normal usage 4K video / gaming etc it won't get hot unless you spam many task at hight speed

Question about heat issue and screen dim

hey guys !
iv got real issue with the flip 4 , i like the brightness to be full and also the extra brightness
but every min that i just do simple stuff like open face book or just playing few sec with the phone my phone begin to warm in the upper side
and the screen dim much , but i only do stuff like few second so whats the point of the brightness
im at home and its not hot in my room.
maybe its defect of the screen or its like that ? cause when i hade s 22 ultra it also dim screen when get warm and the iphone also dim the screen when become hot but in the flip 4 i just do simple stuff and the screen dim then even the brigthness slider when i play with it is not function wtf? can you help me thx

Why are you burning up your retinas? Dim light isn't harmful to your eyes but bright light can be.
There absolutely no reason to use full brightness indoors all the time.
Moreover full brightness greatly reduces battery run time, lifespan as well as display lifespan.
It's best practice to not use these devices in direct sunlight... it will rag them out.
If you're hitting the thermal limits of the device and its battery or cpu core temps are too high ie the device is operating within normal parameters as opposed to a defective thermal sensor all you can do is reduce the load.
By turning down display brightness, reducing bandwidth usage and better optimizing the device to reduce power consumption. What's it's average mAh usage? SOT?
Heat is the inevitable byproduct of power consumption; reduce power consumption to reduce the heat.

blackhawk said:
Why are you burning up your retinas? Dim light isn't harmful to your eyes but bright light can be.
There absolutely no reason to use full brightness indoors all the time.
Moreover full brightness greatly reduces battery run time, lifespan as well as display lifespan.
It's best practice to not use these devices in direct sunlight... it will rag them out.
If you're hitting the thermal limits of the device and its battery or cpu core temps are too high ie the device is operating within normal parameters as opposed to a defective thermal sensor all you can do is reduce the load.
By turning down display brightness, reducing bandwidth usage and better optimizing the device to reduce power consumption. What's it's average mAh usage? SOT?
Heat is the inevitable byproduct of power consumption; reduce power consumption to reduce the heat.
Click to expand...
Click to collapse
man loll i just say i play with facebook whatsapp for just around 2 min and the screen dim all you sayed got nothing to do with it , i see better with max brightness thats why they made it so??? its not possible that after 2 min the screen will dim the phone is new from today and i dont have nothing on it so this strange

nosferatu123 said:
man loll i just say i play with facebook whatsapp for just around 2 min and the screen dim all you sayed got nothing to do with it , i see better with max brightness thats why they made it so??? its not possible that after 2 min the screen will dim the phone is new from today and i dont have nothing on it so this strange
Click to expand...
Click to collapse
Is it just those 2 social media apps doing this?
I don't allow any social media or shopping apps on my phones. Trashware at best, spyware and/or malware at worst.

Just general use outside/car mine gets pretty warm and screen dims. Compared to my S22 Ultra it rarely dimmed but also a bigger phone

You likely know this but it bears repeating:
The processor and other circuits are mostly on the upper-half of the phone, near the camera. These chips do get warm, even hot, when applications are in use.
A lithium ion batter, when being charged or discharged, gets warm, even hot, depending the current flow needed to operate the applications, chips, and screen.
An OLED display can get warm, even hot, when lit brightly.
An OLED screen in sunlight will get warm, even hot, even if powered off, because it appears black.
Outside, if the OLED is bright white, it still gets hot because turning on all the pixels takes power, which is expressed as photos (light) and heat.
A very compact phone, like the Flip, has little surface area to expel heat. It doesn't have a fan, so the only way the phone cools is by convection (passing heat to the surrounding air) or transferring heat to your hand or (don't try this) water.
A folded Flip has about one-half the area to dispel heat because the screen cannot effectively radiate heat to the air or your hand.
Some applications use a lot of processing power even if you think you're using them. This is why so many people on this site discuss removing and/or disabling applications.
You can check in Settings --> Battery and Device Care --> tap on Battery --> tap on the graph, and the phone will display which applications are using the batter.
It's my understanding that the processor, battery and screen all have "checks" to ensure they don't get too hot, and Android can throttle these components to prevent wearing them out, burning them out, or causing a fire.
Hopefully others will better understand some of the challenges Samsung has in creating such a unique phone.

wpscully said:
You likely know this but it bears repeating:
The processor and other circuits are mostly on the upper-half of the phone, near the camera. These chips do get warm, even hot, when applications are in use.
A lithium ion batter, when being charged or discharged, gets warm, even hot, depending the current flow needed to operate the applications, chips, and screen.
An OLED display can get warm, even hot, when lit brightly.
An OLED screen in sunlight will get warm, even hot, even if powered off, because it appears black.
Outside, if the OLED is bright white, it still gets hot because turning on all the pixels takes power, which is expressed as photos (light) and heat.
A very compact phone, like the Flip, has little surface area to expel heat. It doesn't have a fan, so the only way the phone cools is by convection (passing heat to the surrounding air) or transferring heat to your hand or (don't try this) water.
A folded Flip has about one-half the area to dispel heat because the screen cannot effectively radiate heat to the air or your hand.
Some applications use a lot of processing power even if you think you're using them. This is why so many people on this site discuss removing and/or disabling applications.
You can check in Settings --> Battery and Device Care --> tap on Battery --> tap on the graph, and the phone will display which applications are using the batter.
It's my understanding that the processor, battery and screen all have "checks" to ensure they don't get too hot, and Android can throttle these components to prevent wearing them out, burning them out, or causing a fire.
Hopefully others will better understand some of the challenges Samsung has in creating such a unique phone.
Click to expand...
Click to collapse
thx for your great reply

hyelton said:
Just general use outside/car mine gets pretty warm and screen dims. Compared to my S22 Ultra it rarely dimmed but also a bigger phone
Click to expand...
Click to collapse
My flip4 is up and running and no negatives so far. Just slightly warm while I was downloading over wi-fi some 15GB of my music. The overall quality of this phone is pretty good, just like my S22, but it folds to 1/2 of S22 in size. Spent several hrs setting it up and debloating, I always do these things manually. This phone is very responsive and operates smoothly.
On the side note: picking up the delivery from Bestbuy, rather than getting it to my door by Fedex, wasn't a good idea - now I have to look somewhere for an mt box for packing up and shipping my trade-in, Bestbuy just handed to me two small retail packages w/ the phone and silicone cover. They don't handle trade ins.