Database Users

brightness dimmed suddenly due to overheating and thermal throttling?

Just got my one plus 2 yesterday, really like it, but every time i use it for like 3 mins, the brightness will suddenly drop, it seems due to phone is getting warm, so I checked the CPU temperature is about 39-42C.. I had max brightness and turned adaptive brightness off.
Any suggestion? Is this normal? I tried different kernel but no luck literally I just keep using this phone for 3 mins and suddenly screen brightness dims...
Thanks

I also have this problem
tried everything
-setting
-change on thermal setting w/ root
-change Kernel
-change ROM
-OOS 3.0 Beta official
Nothing helps

That's normal. Limiting maximum brightness is one measure Oneplus control thermal throttling.

Anyone running Android Auto ?

Hi,
I'm experiencing some problems when using Android Auto. I think that my device is overheating.
Maps becomes very slow after about 30 minutes driving. Sometimes the phone is going very hot and is unresponsive during few minutes. I checked the cpu temp after a drive today and got values close to 60c. I'm running LOS 14.1 right now. I was using CM 13 previously and the heating issue wasn't so huge.
So I wonder if anyone else is running Android Auto successfully on this device ?
update : I disabled thermal throttling using Kernel Aduitor. Android Auto is running perfectly fine now. Phone is heating a lot (80c for CPU but 25c for battery) What is the thermal throttling ? Is it a kernel feature ? Is it the same as thermald ? Is it tunable ?

marcjero said:
Hi,
I'm experiencing some problems when using Android Auto. I think that my device is overheating.
Maps becomes very slow after about 30 minutes driving. Sometimes the phone is going very hot and is unresponsive during few minutes. I checked the cpu temp after a drive today and got values close to 60c. I'm running LOS 14.1 right now. I was using CM 13 previously and the heating issue wasn't so huge.
So I wonder if anyone else is running Android Auto successfully on this device ?
update : I disabled thermal throttling using Kernel Aduitor. Android Auto is running perfectly fine now. Phone is heating a lot (80c for CPU but 25c for battery) What is the thermal throttling ? Is it a kernel feature ? Is it the same as thermald ? Is it tunable ?
Click to expand...
Click to collapse
I would be careful with turning that off. Thermal throttling basically checks how hot your phone's internal components get, and when they reach a dangerous level it forces the device to slow down.
Turning it off means that your device WILL work at hotter temps, but you risk damaging the CPU, screen, battery, etc.
The reason the phone was getting slow is due to 1. the screen being on all the time, 2. the GPS constantly updating.
The N4 wasnt meant for such tasks, so it overheats.
One solution: get a mount that sits on top of the airvents, so that cool air blows over it.

HubrisRev5 said:
I would be careful with turning that off. Thermal throttling basically checks how hot your phone's internal components get, and when they reach a dangerous level it forces the device to slow down.
Turning it off means that your device WILL work at hotter temps, but you risk damaging the CPU, screen, battery, etc.
The reason the phone was getting slow is due to 1. the screen being on all the time, 2. the GPS constantly updating.
The N4 wasnt meant for such tasks, so it overheats.
One solution: get a mount that sits on top of the airvents, so that cool air blows over it.
Click to expand...
Click to collapse
Well the screen is off with Android Auto. But of course the GPS is working. The battery temp stays low at about 25c. The screen is not hot. Only the back of the phone (the upper part close the camera) is getting hot. Thermald is still active and there is still a protection against battery overheating.
I really think that the Lineage kernel is too much aggressive regarding thermal throttling. I tried other kernels but unfortunately they slow down clocks too much when the screen goes off.

marcjero said:
Well the screen is off with Android Auto. But of course the GPS is working. The battery temp stays low at about 25c. The screen is not hot. Only the back of the phone (the upper part close the camera) is getting hot. Thermald is still active and there is still a protection against battery overheating.
I really think that the Lineage kernel is too much aggressive regarding thermal throttling. I tried other kernels but unfortunately they slow down clocks too much when the screen goes off.
Click to expand...
Click to collapse
Btw, there are some stupid gadgets you can buy on aliexpress to help with this issue. Like this weird phone stand with a fan behind it, https://www.aliexpress.com/item/Portable-3-in-1-Holder-Stand-Radiator-Mobile-Phone-Rings-Holder-2000-mA-Bracket-Power-Bank/32824399237.html?ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10068_10130_10344_10345_10547_10342_10343_10340_10341_10548_10192_10541_10540_10190_10307_10301_10303_10060_10155_10154_10056_10055_10539_10538_10537_10536_10059_10534_10533_100031_10103_10102_10142_10107_10324_10325_10084_10083_10179_10312_10313_10184_10314_10073,searchweb201603_25,ppcSwitch_2&btsid=ee6398e3-e7a6-4bd7-938c-34f6e0cdef52&algo_expid=21d9a156-0a93-470d-acbc-d807892ce6e8-0&algo_pvid=21d9a156-0a93-470d-acbc-d807892ce6e8 or just buy a holder than fits over the airvents in your car https://www.aliexpress.com/item/Anker-Air-Vent-Magnetic-Car-Mount-Highly-Adjustable-Phone-Holder-for-iPhone-SE-6-6s-7/32824593598.html?ws_ab_test=searchweb0_0,searchweb201602_3_10152_10065_10151_10068_10130_10344_10345_10547_10342_10343_10340_10341_10548_10192_10541_10540_10190_10307_10301_10303_10060_10155_10154_10056_10055_10539_10538_10537_10536_10059_10534_10533_100031_10103_10102_10142_10107_10324_10325_10084_10083_10179_10312_10313_10184_10314_10073-10102_10000902,searchweb201603_25,ppcSwitch_2&btsid=d12c851e-a69b-48e1-b282-0733c26584ae&algo_expid=ab74c295-fb60-418d-9e32-5e32f75bd993-0&algo_pvid=ab74c295-fb60-418d-9e32-5e32f75bd993

Yep, I have the same issue. I was originally using slickrom stable release, then switched to weeklies and the issue showed up. Slickroms is based on lineage, so switched to lineageos and I've been seeing the same problem. Haven't found a solution to this problem (using Android auto with nexus 4 and lineageos).

G900F cpu temp is 57-60

What is normal temeprature on this phone with normal use messenger,wifi facebook ... my phone is 60celisius but not hot, normal with hand

On high load, the CPU can get up to 70 degrees. But the phone will thermal throttle if it gets too hot to prevent any damage.

Galaxy A5 2017 (A520F) overheating issue

Hi guys and girls,
I've got my A5 a few days back, and at start it worked great. I've messed up with a lot of software, tried everything out, and instead of uninstalling everything I thought it'd be best to do a factory reset. That's where my problems started.
While I set up the phone and installed all the apps (updated) that came with the phone, connected to a 100Mbps optical internet via AC wifi, I lost about 15% of battery. Okay, who knows what the phone needed to do, lets move on.
Next day I was just using Whatsapp, messaging with my gf, and the phone was a bit warm with 20-25% brightness (auto-off). The battery temperature was 32-33C, and I used an infrared thermometer and measured 33.5C on the back of the phone at the Samsung logo. Then I just browsed the settings, setting up my phone a bit more, and it was still getting warm, getting anywhere between 31 to 33C on the battery and around 33C with an IR thermometer. I still can't say much about battery drainage but the phone is getting pretty warm even while browsing the web or doing non-intensive tasks.
Does the A5 2017 get warm or is it just me? Should I RMA it?

Have a520f, 33C is near average. But it's also dependent on the weather. Fast charging or charging with the screen off will raise it. If it wasn't always like that, maybe something in the background is using the CPU, checking for updates or notifications. The CPU/GPU is like a car engine, running at various 'speeds' and 'weights it is carrying', and it does get warm. Only if it gets hot, then it's a problem. Many apps could do those checks once the screen is turned on. Uninstalling/changing settings will only help with battery life (percent drain), the temperature is ok. The a520f (and a510f) also has touchboost, temporarily raising the CPU clock when the screen is touched. Might be noticeable with background tasks while using a keyboard.

Thanks friend. Didn't know about "Touchboost", you opened it up for me a bit there.
While the screen is off, It's perfectly fine. Once I take it in my hands, it starts to get warm around the Samsung logo. It's probably screen + apps + nowhere to dissipate heat, but I wasn't noticing it at start. I've only had it for a couple of days now. I don't know about the battery drainage, with a charge lasting me ~40hrs with 7h SOT I wouldn't say it's draining at all - though my screen is at low brightness, 1/4 max.
Just wanted to see what you other guys are getting as I thought it was high. My ambient is around 24-25C all year long. I've seen tests where people weren't getting more than 30C at all, but as you said, it's the ambient that dictates that.

Idk if this is only with mine but sometimes I turn the phone off completely and put it to charge and it happens that it can reach like 35°C without touching it. Now the phone is plugged, I only browse with chrome facebook.. and it is like 37°c. That can happen when it is not plugged too. Using wifi seems to be better though.
I dont think I have an important battery drain because it can last about 6-8h SOT normal usage.
Onr other thing, when I turn on the mobile hotspot, the battery drains way more than usually and heats up too.

Anyone having issues with the High temp warning while charging?

I'm running on Android 8.1. This does not annoy me as often but when the phone is charging while feeling a little bit warm, it shows a high temp warning then slows down the charge. A second later, it shows a normal temp and resumed normal charge speed notification, then it shows the high temp warning again..
It's annoying especially when I connect my phone to my laptop and use it because the repeating high temp low temp warnings keep popping up.

Indirections said:
I'm running on Android 8.1. This does not annoy me as often but when the phone is charging while feeling a little bit warm, it shows a high temp warning then slows down the charge. A second later, it shows a normal temp and resumed normal charge speed notification, then it shows the high temp warning again..
It's annoying especially when I connect my phone to my laptop and use it because the repeating high temp low temp warnings keep popping up.
Click to expand...
Click to collapse
Sounds like an issue. Try different cable. Also factory reset. If those do not help, you should bring it to where you bought it from. This might become dangerous (explosion scenario). Also, you are degrading battery incredibly quickly while having it at high temperatures.

This is a common thing, it's because it's charging. It's also stated in the Support app that comes with the phone. It's normal it's heating up when using while charging. Nothing is wrong with the phone.

It was annoying me too, so I just disabled the app. Or maybe I had it backed up and uninstalled with Titanium backup. Either way, no more stupid warnings.

Yeah I only experience this issue when I was playing heavy games then after that I'll put my phone on charge while using it or playing games