Thermal dissipation - Xiaomi Mi 4C

I've noticed that on heavy usage the cpu temp raises up to 41C with core control or about 45C without offline cores. These temps are quite OK for the 808 however the touchscreen in front of the SoC is too hot even with 40C but the back cover is OK. Other devices tend to go above 50C without too much heat on hand. Have you the same problem?

The top front does get noticeably hot yes. I don't know if that's a problem. All seems within normal operating temperatures. Guess it might be slightly uncomfortable to the touch.
I think the reason you typically don't feel it on other phones is because the screen is usually indented a bit deeper and the digitizer is usually thicker glass.

Me too I'm also worried is it okay for the hardware ? Or it will it get damaged because at 41°C the phone becomes really hot

Talha7866 said:
Me too I'm also worried is it okay for the hardware ? Or it will it get damaged because at 41°C the phone becomes really hot
Click to expand...
Click to collapse
If you're worried about hardware failure, you would need about double that temperature to get into the danger zone.
The phone has temperature control built in, so you shouldn't have to worry about operating temperatures unless you're leaving it out in the Sahara or something

After watching a tear down, it seems that they designed it like this. The SoC is placed on a metal frame above the LCD so it can dissipate the heat quickly because of the glass.
Source

40 isn't that hot.
Mine goes up to 69 that is insane hot.
With Max brightness while gaming.
Thermal tweaks didn't help.

kar5ten said:
40 isn't that hot.
Mine goes up to 69 that is insane hot.
With Max brightness while gaming.
Thermal tweaks didn't help.
Click to expand...
Click to collapse
You are so lucky....mone just thermal throttling and fps in games drops to 10-15

Related

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.

[Q] Overheating Battery

I have two questions.
My Nexus' battery tends to overheat whenever I'm either playing games or charging. From what I've read, a hot battery will shorten the lifespan of the battery. What method do you use to cool down your battery?
This is a simple solution I came up with:
1. Take out an ice pack.
2. Envelop the ice pack with some sort of thin cloth (I used a microfiber cloth).
3. Take out the phone from its case and place the phone on the cloth.
I'm rather concerned about this method because it does cause condensation. However, the cloth applied over the ice pack is supposed to absorb the moisture emitted from the ice pack. Thoughts on this?
Hi,
First thing: can you provide the real temperature instead of saying "overheat" (it's like "it feels hot, warm, very hot, etc...")?
Second: are you sure you are speaking of battery temp and not CPU temp?
Phisically where your device is "overheating" (bottom, center, top right)?
what do you consider "overheat"? how it feels in hand isnt an accurate way to measure temp, as it could feel hot but still actually be cool. while charging, its normal and expected to get warmer. also while charging and using the device it can get significantly warmer. and the chances are that you will long get rid of your nexus before you see any real noticeable battery loss(2-3 years +).
Sure, sorry about that. I'll specify more in this post.
The heat is coming from where the battery is located and it feels very warm.
My phone went all the way up to 46C. (After cooling it off, it's 25C)
As for the CPU or battery temperature, the app I use only states "temperature: ". I'm assuming. it's battery temperature since the app monitors my battery statistics.
-Cobalt- said:
Sure, sorry about that. I'll specify more in this post.
The heat is coming from where the battery is located and it feels very warm.
My phone went all the way up to 46C. (After cooling it off, it's 25C)
As for the CPU or battery temperature, the app I use only states "temperature: ". I'm assuming. it's battery temperature since the app monitors my battery statistics.
Click to expand...
Click to collapse
46C is normal for battery temp, especially while charging(its not that much higher than body temp, which is 37C). if getting up around 55-56C, then its getting a bit too warm. 60C is overheating for the battery(100C for the cpu).
Nothing to add much as what simms22 said, in any case there is a thermal protection (thermal throttling) and the last protection is a shutdown (for both about CPU and battery temp)...
We have a quadcore device enclosed without any "hardware" cooling system, so under some conditions you can expect some heat, nothing to worry about since there is a thermal protection.
You are on stock kernel? What is your room temperature?
To me your solution seems too extreme and useless ("an ice pack", all day, near you, ready to use it when you reach YOUR temp , stop using your phone in this case...) , search for "heat" in this forum, nothing wrong.
While charging I have something like 39/41 °C and if I use my phone it can go at about 44/45°C for the battery temp. For the CPU temp while charging it can go to 70°C (all browsing the web in Wi-Fi and in 4G it's more, 88°C but with custom kernel and custom thermal settings).
Honestly, your use phone like you want and like you need, don't bother, in any case if you have a real overheat you will know (see above)...

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.

Oneplus 8 throttles immediately it gets to 44 degree Celsius.

Help, I got a oneplus 8 but the device throttles and starts lagging profusely immediately it reaches 44 degree Celsius, I've tried everything from custom roms to magisk modules, nothing works, I got this phone to play games but it cant even do that for more than 10 mins as it starts lagging.
EbaFufu said:
Help, I got a oneplus 8 but the device throttles and starts lagging profusely immediately it reaches 44 degree Celsius, I've tried everything from custom roms to magisk modules, nothing works, I got this phone to play games but it cant even do that for more than 10 mins as it starts lagging.
Click to expand...
Click to collapse
(1) Does it overheat when only playing games?
(2) Does it overheat when not playing games?
Meh, load DevChek and see which if any sensors are running hot.
rodken said:
(1) Does it overheat when only playing games?
(2) Does it overheat when not playing games?
Click to expand...
Click to collapse
Only when playing, it's a Snapdragon 865 with 12gb of ram phone and it cant even play games at the lowest graphics for more than 5 minutes without lagging
EbaFufu said:
Only when playing, it's a Snapdragon 865 with 12gb of ram phone and it cant even play games at the lowest graphics for more than 5 minutes without lagging
Click to expand...
Click to collapse
There are modules designed specifically for gaming needs. Here are a few for testing purposes.
A phone’s internal temperature can be 36-43 degrees Celsius (96.8-109.4 degrees Fahrenheit) and still be considered normal.
Arguably, its fine, if anything that's considered "cool" considering the chips can withstand up to 90°+.
The temperature reading you're seeing is simply the "system" temperature. The CPU and GPU hit well above 90c on games like Genshin Impact, there is nothing to worry about as those chips are designed to run these high temperatures. If high temperatures on SoC's would have been as damaging as some people make them out to be all devices would have been dead by now, but they still run despite thermal throttling at almost 100c nonstop.
-- YMMV
Taking any sensor above 160F isn't a good idea as a runaway component frying temperature excusions (caused by temperature control hysterious) can and do happen. You need a buffer zone to help avoid this...
High temperatures and current drain trash Li's prematurely as well. Any constant drain of 800 mAh or greater will effect battery longevity. Some of these newer phones are drawing an average of 1Ah when not even gaming, ridiculous.
rodken said:
There are modules designed specifically for gaming needs. Here are a few for testing purposes.
A phone’s internal temperature can be 36-43 degrees Celsius (96.8-109.4 degrees Fahrenheit) and still be considered normal.
Arguably, its fine, if anything that's considered "cool" considering the chips can withstand up to 90°+.
The temperature reading you're seeing is simply the "system" temperature. The CPU and GPU hit well above 90c on games like Genshin Impact, there is nothing to worry about as those chips are designed to run these high temperatures. If high temperatures on SoC's would have been as damaging as some people make them out to be all devices would have been dead by now, but they still run despite thermal throttling at almost 100c nonstop.
-- YMMV
Click to expand...
Click to collapse
Thanks, I've tried some magisk modules in the past but none of them works and some of them bricked the phone and I couldn't boot up without formatting it, I'll need to make a back up before trying any of these so I won't loose files again.
blackhawk said:
Taking any sensor above 160F isn't a good idea as a runaway component frying temperature excusions (caused by temperature control hysterious) can and do happen. You need a buffer zone to help avoid this...
High temperatures and current drain trash Li's prematurely as well. Any constant drain of 800 mAh or greater will effect battery longevity. Some of these newer phones are drawing an average of 1Ah when not even gaming, ridiculous.
Click to expand...
Click to collapse
The phone is fairly strong for it to start throttling at 44 degree Celsius is just barbaric, I'm in Africa and 44 is just the normal temperature for any phone, because the weather's hot
EbaFufu said:
The phone is fairly strong for it to start throttling at 44 degree Celsius is just barbaric, I'm in Africa and 44 is just the normal temperature for any phone, because the weather's hot
Click to expand...
Click to collapse
If the humidity is low use a damp microfiber cloth to cradle it in. If the battery goes above 108F it may trigger throttle back even shutdown.
It likely will not charge above 104F.
Keep it out of the sun, always. Use manual brightness control and keep it under 50% whenever possible. Optimize it and take out the trashware like FB, WhatsApp and such.
I can use my phone at 100F for prolonged times with no cooling for browsing but need cooling for vids or such as well as charging at those temperatures.

Categories

Resources