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my philosophy on overclocking

Seems like some recurring discussion in past threads:
1 - why should we even bother overclocking if we’re not a gamer.
2 - won’t we damage our device with overclocking.
I haven’t seen definitive answers posted anywhere, and I certainly don’t have one.
Maybe in that case (I have no definitive answer), I should probably just keep my mouth shut.
It may be the case, if so let me know.
For whatever reason, I have some strong opinions and I feel it would be useful to share my opinions and the reasons I have formed those opinions.
Take them or leave them or add to them... up to you.
Point out to me if you think I am grossly mistaken.
1 - why should we even bother overclocking if we’re not a gamer.
Click to expand...
Click to collapse
There is constant tradeoff between battery and performance.
Underclocking will help you save battery. How low you want to underclock depends on what you can tolerate.
But what you can tolerate depends on your user experience, which can be dramatically impacted by use of overclocking at other times.
The perfect example for me is a program which is slow to start up. In my case it is Memento database with 1000+ records, takes a long time to read in (I think the program does some sorting every time it opens). That is a minor annoyance. If I were to underclock it will start even slower, I’m going to get impatient and set my speed back up.
But think about this:
1 - Using Tasker you can apply cpu profiles upon application launch and remove them after a predetermined length of time. I can give the program a blast of 1600M-hz when it starts, then set it back where it was after predetermined period (for example 10 seconds).
2 – Setcpu is not quite as flexible as tasker in this regard. With setcpu we can create a profile to occur when we launch the program like Memento, but we just can’t incorproate a time delay into the logic (it will stay on the higher profile as long as the program runs in the foreground).
3 - There may be circumstances where this setcpu behavior is what you want... it will give you faster response whenever the program is in the foreground, and will yield to lower priority profiles whenever the program goes to the backghround.
(I haven’t investigated how to make make Tasker and setcpu play nicely together yet).
So, if you speed up the things that cause noticeable delay for only a short time, or particular applications which seem to run slow then you can probably be more satisfied with your underclock in the other times. In the overall picture, I think the overclock capability can ironically be used as part of a strategy to save battery (unless you just like overclocking just to see things zip accross your desktop and menu’s pop in and out faster than you can blink, I’m starting to get spoiled with that behavior on my phone in its new configuration, partially from overclock..I’m sure others get even better in their configuations..).
2 - won’t we damage our device with overclocking.
Click to expand...
Click to collapse
On this I would say no, as long as you are careful about not running it in conditions that create high temperature. .
(you may have stability problems as you guys know, an entirely different subject).
The physics of the damage are all related to temperature. There are many variables affecting temperature that the designer is unaware of and so he builds in margin for the worst cause unknown future occurence (he has to consider maybe phone will be in desert with 100F ambient, and on the charger, while the user tries some heavy surfing with gps, all at the same time, so he limits cpu to 1200Mhz).
We on the other hand know what are the conditions of our phone and what it’s likely to see and what it’s doing at any given time, and setcpu provides additional ability to monitor and adjust.
Here are example setcpu profiles I came up with to protect myself from damaging temperatures (Zen's kernel A/1600)
Priority 100: If batter temperature > 50C (122F),establish conservative governor 100-400Mhz
Priority 90: If batter temperature > 45C (113F),establish conservative governor 100-800Mhz
Priority 80: If battery temperature > 40C (104F), establish conservative governor 100-1200Mhz (in the event I was overclocking, this profile will stop it when battery temp exceeds 40C, all other profiles that may invoke overclocking are lower priority than 80).
This is just from judgement, knowing that I’m normally < 104F battery temp during light use and don’t want to overclock when I’m outside that normal light use zone. Some further curtailment of cpu max frequency occurs as battery temperature climbs above that. (which I would not have even had the benefit of if I were casual user with no overclocking and no setcpu).
As long as you’re limiting temperature, you should not be worried about damage imo. By the way, of course overclocking is not the only thing to affect temperature: things like phone case (thermal insulation), charging, gps, heavy use etc all have an effect. I'm not quite sure why sometime cpu overclocking gets singled out in a dangerous category all its own without any discussion of other things that affect tempertaure.
In fairness, you may point out that what we monitor is battery temperature and not the same thing as cpu temperature. It’s a good point. Increase in heat generated at the cpu causes more of an increase in temperature at the cpu then it does at the battery. But it's question of how much different. there's a matter of how much. Why do you think it is that Samsung didn’t give us cpu temperature indication? I think because they knew battery temperature is close enough. Even on newer flagship Behemoth Samsung Note, I’ve read you still only get battery temperature, no cpu temperature. If cpu temperature was that much different, they surely would have provided a separate indication of cpu temperature (cpu is after all a much more critical component than replaceable battery).
And why should we expect battery temperature to be representative of cpu temperature on our phone, when the same is not true on a pc? I think I can answer that:
* PC has things all spread out. There is air flowing through. The air picks up heat from each component from heat sinks by convection. The component temperatures are not tightly coupled together.
* Phone (in contrast to pc) has everything compact inside one itsy bitsy case. There is no air flowing through. That means heat transfer inside the phone is not by convection but by conduction. For most effective conduction, all components are attached with high thermal-conductivity path to the phone structure and the exterior surface of the phone. The heat transfer from phone to ambient is primarily convection. So we have effective heat transfer (conduction) among the components of the phone and less- effective heat transfer (from phone to environment). It tends to tell us that there will not be big difference in temperature among phone components. The big temperature difference that occurs is between the phone and the ambient air.
I don't have access to a phone which has both cpu and battery temperature indicators. If someone does, it would be interesting to hear how close those two temperatures follow each other.
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Edited to add: searching other threads suggests there can maybe be a substantial differencebetween cpu temperature and battery temperature. That makes me a little less certain. At least we can use battery temperature as a gross indicator that the cpu isn't seeing excessive extra heat from other non-cpu sources while we're overclocking it. Certainly having profiles in place to limit overclocking when battery temperature is high can only help protect us. But is it a false sense of security which can lead us astray? I dunno. I have already done a stability test at 1600 for quite awhile and there's no damage in sight, so if there is any damage potential, then it is only an accumulation over time. I don't plan on leaving Fmax at 1600 all the time anyway, since it would kill the battery. My planned strategy reserves the 1600 overclock for occasional playing around, and boosts when I need them like like my Memento database. My gut says that approach is just fine. Interested in hearing any other thoughts, experiences, links that may shed light.

[Q] CPU throttle won't work in surface pro?

In the power options, under processor power management, the maximum processor state on battery seems to always revert back to 100% after a reboot or changing power plans. Any ideas why the setting won't stick?

I noticed this as well
..very annoying
is that the only setting you noticed reverting? or are there more?

I assumed win8 handles processes differently requiring less battery consumption.
Sent from my EVO using xda premium

but that isn't the issue
if u go into settings and change the 100% to anything else
it always reverts back .....very annoying ....marked difference in battery life noticed

If you create a new power plan and use it, the settings will stay after a reboot. This is what I did.

Did anyone try 20% CPU so far ? And if so, how is the battery life?
I won't mind getting Surface Pro if I can throttle down its CPU when on battery to Surface RT's speed for a longer battery.
I currently have a RT version with me

Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.

GoodDayToDie said:
Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.
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Click to collapse
Not only that but the windows throttle percentage is not really as specific as a 0-100 range would suggest, so even if you set 20% it might limit the cpu to its minimum frequency.
If you use a tool such as this you can see what the current frequency is: http://www.cpuid.com/softwares/tmonitor.html
With my laptops (much slower) Core2Duo the minimum frequency was too slow, but about 50% of the max worked well and dramatically reduced the heat under load.
Some people reckon it is better to allow the cpu to use its full frequency so that it finishes the job faster and can move back to the lowest idle state. I am not sure that really applies to i5 (which doesn't support the ARM-style idle states that haswell will) and like you say the power consumption at lower cpu frequencies doesn't vary much. My experience with windows is that sometimes for no apparent reason at all programs such as word or chrome sit using 50+% of the cpu and you have to restart the process. It doesn't happen often at all but you might not realise until your battery is low. With the pro's i5 I expect you could get away with quite a low cpu frequency and would at least know you will always get roughly the same battery life.

This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html

Walderstorn said:
This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html
Click to expand...
Click to collapse
Actually, it is nothing like that problem. The OP is talking about manually limiting the max clock of the device using the Windows setting that has been there for a while now.

[Q] Serious Nexus 5 overheating problem

Hello. I'm new with the account here, but been reading this forum for years.
I'm creating this thread because my new Nexus 5 (which I have for 20 days now) is overheating more than a normal mobile device should.
When i bought it, it had 4.4.4 Kit kat android, and I had that one for about 5 days, and in that time, I didn't notice any overheating, or maybe didn't pay attention, can't remember really.
But after installing official Lollipop 5.0.1, the device is heating pretty good even when browsing internet for 5 minutes, at about 30-40% brightness.
**** Please tell me if some of your devices are acting the same, and is it worth a try to install back an older android to try if it will stop overheating, or my device may be faulty and should I take it back for another one (or maybe switch to LG G2) ?
Because I'm still unable to post image links, i will write it down:
- Ambient temperature: 23 degrees Celsius
- The temperature sensor is taped on the back side, at the side of camera, this is where it overheats most. (even if not using camera)
- Phone temp after staying on standby with screen off: 28 C (it's not warm but it is warmer than desk which it is sitting on)
- After staying idle on home screen with screen on for 10 minutes (50% brightness): 30.5 C
- After chatting on Messenger for 10 minutes: 34.3 C (feels warm)
- After recording video for 4 minutes: 41 Celsius!!! (almost uncomfortably hot in the whole upper half of the phone, both the back side and the screen)
- After 15 minutes letting it cool down, with screen off of course, it is 38 C (still hot to touch), and it stays like that untill I reboot the phone, then it cools down.
The test took about 50 minutes, and after that, battery was drained for about 25%.
-While charging, the phone does not overheat, just gets a little warm which is OK. (haven't tried wireless charging)
P.S. I don't play games on the phone...
Please act quick in case I should return the phone...

the only time my phone gets hot is when im intensively doing a lot of things..
for example.. im playing ingress, have tether ON, and my two sons are using their tablets connected to my phone playing ingress too..
but if i turn off the game and turn off tether, it cools down..
to me it sounds u have something intesively using your CPU and perhaps GPS and other radios.
hold power button.. when PWR OFF shows, long press it and reboot into SAFE MODE...
use the phone for a bit and see if it gets warm... this should tell you if its apps installed.

I only used wifi, no tethering, no GPS, 3G, NFC or any other radios, cell signal is good so phone is not searching for it.
- In safe mode, it still gets warm when using camera. When browsing internet and watching images in google search, also but just mild warm..
- But after sitting and thinking, I've found a problem! After recording with camera and leaving it to cool down, it didn't cool down because it had to make an effort to upload that 5 min video on Google drive via Auto backup!
After turning the Auto-backup off, it is now much cooler!
I will post tomorrow with the results, if something changes...
Anyway, thank you!

First of all, "warm" doesn't mean anything.
Battery temperature does not mean much either, as the CPU is what generates the most heat.
There is a battery temperature throttle that reduces the CPU frequency, but it is almost entirely pointless as the CPU will always reach it's own throttle temperatures MUCH, MUCH earlier than the battery will. The CPU starts throttling at 65C CPU temp (NOT battery temp), and shuts itself down at about 105C CPU temp. Unless your battery somehow reaches a batterytemp of 70C+ (nearly impossible because the CPU will always hit it's throttle first), then I would never even take it into any sort of consideration unless you have a physical battery defect.
Using the camera generates heat since it's CPU and power intensive.
Using the phone in general will generate heat.
Keep in mind that mobile devices are passively cooled, not actively cooled with a fan/liquid.
Not sure what you're so worried about.

Lower your brightness

Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app

AlexSRB said:
Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
The only thing that sounded odd was how it wasn't cooling down until you rebooted, but it sounds like you figured that out with the automatic upload setting.
41-42c battery temp can be normal after prolonged usage, though personally I usually see that after a short gaming session. My brightness is around 40% and high brightness will cause extra heat.
Otherwise the phone is very thin so you can feel the stacked SoC and RAM heat up through the skin fairly easily, right around the camera area as you mentioned.
I think each device and CPU is slightly different and can vary by a few degrees under load as well.

AlexSRB said:
Lethargy, thank you for a short physics lesson. I'm already into physics and cooling systems so all is clear. I was just worried a bit because all of my previous phones weren't getting this warm (hot), but also never had a multi-core processor in phone eather, maybe that's the reason why I never experienced this before.
Battery temp (measured with app) gets up to 40-42 degrees Celsius, while the phone case gets up to 41 when recording video. Of course that temp won't damage the device, I'm not worried about the processor, but that temp is degrading battery life, in long term.
And about the brightness, phone is not meant to be used at lowest brightness all the time, so that shouldn't be an excuse for high temps. Just sayin'...
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Your temperatures are fine and you shouldn't worry about it. It's average for a Nexus 5, and there are throttles/shutdown temps anyways, for both the battery and CPU. I've had mine for a year and there hasn't been any sort of issue, normal usage should be negligible to the condition of the battery.

Ok, everything seems to be ok then. Now I can go to sleep without worrying Thanks guys!
Sent from my Nexus 5 using XDA Free mobile app

Do any custom ROMs/Kernels allow you to have full control over screen brightness?

Regardless of ambient light, is there a way to set full brightness on the S6?
Running the stock ROM/kernel, even on full britghtness, the screen can go brighter unless the light sensor detects a high ambient light. I am wondering if its possible to change this.
Currently means PWM is still active on the screen even on full brightness. Same with the note 4 but this was not the case with previous samsung devices. PWM on full brightness is a deal breaker for me so I need to know now or this phone is being sold.

I think it's not really advisable to keep the screen on "extended brightness" mode for longer periods of time, because AMOLED panels wear out over time and this would be a definite way to make it wear out faster. Also it generates a lot of heat. There's a reason why Samsung implemented this adaptive mechanism.

mindfever91 said:
I think it's not really advisable to keep the screen on "extended brightness" mode for longer periods of time, because AMOLED panels wear out over time and this would be a definite way to make it wear out faster. Also it generates a lot of heat. There's a reason why Samsung implemented this adaptive mechanism.
Click to expand...
Click to collapse
Thankyou for replying but you did not answer the question at all. I specifically stated this is a deal breaker for me, and that it means that I have to sell this $1000 phone for great effort at a reduced price because of it.
If something is this important to me then I clearly do not care about wearing it out over time. My galaxy s1+s2 has been running on modified AMOLED gamma values for 6 years and they are still fine so I dont care if the displays wears out in 10 years time.
I cannot use the phone becuase the PWM effect means the screen flickers like crazy. It gives me a headache after 1 minute of use. The phone is worthless to me in this state. If i can increase the brightness to full hopefuly the PWM effect stops and I can use a screen filter to lower the brightness, so it will not wear our the display as well.
Lastly why was this moved to Help and Troubleshooting, it is a very important question about the phone. All previous SGS phones have been fine, this is a game changer for the worst.

Yuge said:
Thankyou for replying but you did not answer the question at all. I specifically stated this is a deal breaker for me, and that it means that I have to sell this $1000 phone for great effort at a reduced price because of it.
If something is this important to me then I clearly do not care about wearing it out over time. My galaxy s1+s2 has been running on modified AMOLED gamma values for 6 years and they are still fine so I dont care if the displays wears out in 10 years time.
I cannot use the phone becuase the PWM effect means the screen flickers like crazy. It gives me a headache after 1 minute of use. The phone is worthless to me in this state. If i can increase the brightness to full hopefuly the PWM effect stops and I can use a screen filter to lower the brightness, so it will not wear our the display as well.
Lastly why was this moved to Help and Troubleshooting, it is a very important question about the phone. All previous SGS phones have been fine, this is a game changer for the worst.
Click to expand...
Click to collapse
Not really sure where the issue is at, are you stating that when the brightness is reduced you can visibly see the phone flicker? I use an app called Velis Auto Brightness, it gives you way more customization to the brightness level. I like it because it mathematically calculates based off the luminescence (in the environment) of how bright the display should be to show accurate color perception, rather than focusing on batter life as much.
The extra brightness mode on the phone is just a high contrast feature, I haven't found a way to force it on as of yet. I know the phone goes up to 700 nits in sunlight, but the biggest difference is the contrast feature on it.

Brittany_Menton said:
Not really sure where the issue is at, are you stating that when the brightness is reduced you can visibly see the phone flicker? I use an app called Velis Auto Brightness, it gives you way more customization to the brightness level. I like it because it mathematically calculates based off the luminescence (in the environment) of how bright the display should be to show accurate color perception, rather than focusing on batter life as much.
The extra brightness mode on the phone is just a high contrast feature, I haven't found a way to force it on as of yet. I know the phone goes up to 700 nits in sunlight, but the biggest difference is the contrast feature on it.
Click to expand...
Click to collapse
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.

Yuge said:
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.
Click to expand...
Click to collapse
I really don't see the problem. All of the phones today flicker, that's how they show images on the screen. You're not going to find custom roms on this device because AOSP is not working on the phone yet, so if its a deal breaker go ahead and return it and get a new phone.

Yuge said:
I can see the phone flicker even when the brightness is on max setting, because it is not truly the the max brightness of the screen hardware. All the galaxy phones after the s2 did this, except when you turned them to max they stopped flickering. The s6 is the first device that does not allow you manual control over brightness, so I just want to know if custom roms have done this.
IF you don't know what I mean this is how they flicker.
https://www.youtube.com/watch?v=D2f0TZtpRA4
Also you are wrong that the extra brightness is just contrast, it increase the lumens as well as reduces or stops the flicker PWM effect. This is how phones using PWM reduce brightness, by making the screen flicker on and off, whereas in phones like the S2 the actual display dimmed. Some people can see this and are sensitive to it, some people are sensitive to to it but they don't know it, and some people dont see it and aren't affected by it.
But it doesn't look like anyone has made a Kernel that allows for full control over the AMOLED in the S6 so I plan on selling the phone soon.
Lastly I hope someone moves this to a more appropriate section where a DEV can see it, not the basic QA section like how do i change wallpaper.
Click to expand...
Click to collapse
Questions do not belong into Development. It will be clear once you read the respective section rules.. I'm afraid that you'll have to live with the thread in Q&A

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.
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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
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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.