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So the other day, I forgot to close an app down--the Schwartz Unsheathed, if you are curious--and when I fished my phone out again, it was hot. Very, very hot. Battery information indicated 41C which, in the grand scheme of things, isn't that high (wouldn't worry me with a PC's graphic card, for example, or CPU) but it felt incredibly warm to the touch. Fine, I shut the app down, removed the battery cover and let the phone cool down. No problem.
It might be the apps I've been trying since then, but I have been experiencing performance and stability issues. Things slow down sometimes. On the Desire ROM, Rosie kept force-closing every now and again. On Enomther's which as we all know is just about the stablest thing that ever stabled, Launcher2 does ditto (the Launcher Dock may be the culprit, though, as it seems to do some weird **** and I've removed it since. Fiddling around with BetterCut also seems to cause force-closes). So could that be it? Did the phone overheat (but if so, shouldn't it have shut itself down) and now something's broken? Getting antsy. :/
41°C should not be a problem, but consider that this was a measurement from the battery pack and that a sensor like that can easily go +/- 5 to 10 degrees.
so well, some chip on the nexus could have gotten way hotter than 41°C. maybe something fried, some defect that was already there and now its really broken.
still, this can be a bit subjective, the phone will seem broken if you think it's broken you can always do a factory reset, reflash the current rom and try from there.
Yeah, could just be my own jitters--I'd experienced issues before, usually caused by a ROM or whatever--and lately my PC's been having problems, so it might well be some kind of placebo effect. Unless it and my N1 magically entered a symbiosis or something.
Thanks for the quick reply.
once my phone accidently fell onto my bed and under my pillow while i was charging it over night and i woke up at 4 am and found a burning out nexus under my pillow. i unplugged it and nothing seemed damaged but it still worried me.
I think if you are worried about it and you are rooted you should install SetCPU. It has a profile designed so that is you his a preset temp it will down clock your CPU.
I use setCPU to save my batterylife ie.
100% - 50% run full cpu on demand.
Idle/Standby downclock to 400Mhz
50% or less down clock to 600Mhz on demand
20% or less down clock to min.
I also complement this with locale for low bat. dimness, wifi off, bluetooth off. etc.. etc.. ( a little off topic I know)
Well, looks like updating More Icons Widget was what did it; things seem to work okay now.
Was wondering what the maximum advisable temperature is?
Maybe the phone has protection for the CPU? but Li-ion batteries dont like heat, it shortens their effective life.
my battery reached 44.3C yesterday on a 4 hour journey in the car using co-pilot and the phone actually net discharged despite the fact it was on a 1A USB charger for the entire journey - about 80% at start of journey and 20% at end.
I've installed setcpu now and set the temperature profile to drop the max speed to 768 if temp is >44C and another one to drop the speed if power is less than 30%, may need further tweaking though. This was not in my car and the back of the phone was effectively unventilated, in my car I have an open backed holder near an air vent.
I've been using the note for a few days now, i've noticed that it heats up quite a lot. Under charging it is understandable... But even when the screen is on for is say 10-15 mins straight... Does anyone elses phone heat up too?
Sent from my GT-N7000 using XDA App
yep, every smartphone I have used does that (GS1,GS2, Note, Tab 7" tab 10.1) and some feature phones do it (iPhone, HTC wildfire etc).
Think about it, dual core 1400mhz running, and batteries always heat up with heavy drain and charging.
Mine has normal temperature under regular use (IE a browser etc. - not really causing higher load), gets quite warm if playing a game for example (higher load, not sure how high).
How long does your battery last? (heat = energy)
I used to have over heat issues but eversince i use franco's kernel 6 the issue has gone away.
i use sfock LA4 with root, bloatware removed and franco's kernel. all good and no heatind issues even when charging.
There is an app called "Elixir" that can monitor the temp of the various sensors within the phone. I've used it on every device I put a custom kernel on. Setup a homescreen widget so you can see the temp at all times. If it tops 45c then you panic a little and let it cool down
which rom and kernel did u use?
Mine heats up only when I charge. I don't mind, I like warm stuff.
Mine gets pretty warm too, especially at extensive use and charging at the same time.
yeah mine gets warm too, especially when browsing using Dolphin browser. The highest temp it touch is 51 degrees. Other than that it quite ok. Usually temp between 28-31 degrees.
When I was on stock rom and connected to gps +charging at the same time, my note used to heat up to extreme temperatures. enough to make me want to shut it off to avoid any hardware damage to internal circuit. It used to become burning hot at the top part of the phone. Now I have LA4 rooted stock rom with bloatware removed and using franco's kernel #6. Now my phone barely gets warm when I am charging and using gps at the same time.
aftabbabar said:
When I was on stock rom and connected to gps +charging at the same time, my note used to heat up to extreme temperatures. enough to make me want to shut it off to avoid any hardware damage to internal circuit. It used to become burning hot at the top part of the phone. Now I have LA4 rooted stock rom with bloatware removed and using franco's kernel #6. Now my phone barely gets warm when I am charging and using gps at the same time.
Click to expand...
Click to collapse
I am on rooted la4.
Exactly what is safe to remove in terms of "bloatware"?
Did you just flash franco kernal 6 with mobile odin over the rooted la4?
Yes, my phone used to heat to levels you couldn't even hold it or touch the screen or your finger would burn. That happened with GPS or PocketCloud. After putting up Franco's kernel, heating is totally gone.
Sent from my NotePhone
flash francos kernel in recovery from cwm. I deleted all samsung apps and all the apps i wll never use. the list is long. there are threads where people list the apps that can be safely removed.
I'm in the boat as gent0r mine will get fairly warm when used under heavy work and charging. But its alarming at this point. Not like sarius where he thought it was melting his case!
Sent from my Xoom using XDA App
mine always with <50c still acceptable for me
I used Franco's latest kernel and my Note's temperature suddenly went up.. it raised the heat more...
I reflash back to Abyss Note and the temperature is back to Normal again..
Usually heating issues are caused
1.) when your using Data Connection thru Carrier (surfing, auto-syncing emails, news feeds, twitter, facebook and etc.)
2.) when your playing graphic extensive games
3.) and lastly when your Note's display is always ON, all the time (like watching movies all the time.)
mine doesnt really heat up, except one time when using titanium backup. the process just stopped and the phone got extremely hot.
it never does that in normal usage though
we must remember we are taking battery temperature as an indication to CPU temperature. In reality your CPU could be getting fried at 50 degrees battery temp depending on circumstances. We news to access the CPU temp sensor if there is one. Does the phone shut off when overheating? Like a failsafe? Or is it just the hardware failing?
Edit - the reason I say this is I remember on the n900 forums a guy dismantled his overclocked phone which was dependent on battery temperature (safe temperatures were established and overclock was dependent on battery temp) and when he saw the state of the main board and scorching around the CPU he was very shocked.
Sent from my GT-N7000 using XDA App
letters_to_cleo said:
I used Franco's latest kernel and my Note's temperature suddenly went up.. it raised the heat more...
I reflash back to Abyss Note and the temperature is back to Normal again..
Usually heating issues are caused
1.) when your using Data Connection thru Carrier (surfing, auto-syncing emails, news feeds, twitter, facebook and etc.)
2.) when your playing graphic extensive games
3.) and lastly when your Note's display is always ON, all the time (like watching movies all the time.)
Click to expand...
Click to collapse
Its always best to reboot 2 or 3 times after flashing a new rom or kernel. Also wiping cache n dalvik helps.
While flashing new kernel, always use kernel cleaning script. I have been using battery indicator pro till now, will try the mentioned sw 'elixir' n see the difference.
Franco v2, speedmod v1 are better kernels imo.
Moved To Q&A
Please post all questions in the Q&A section
So over the course of time I have used many different ROMs and also have had 5 batteries for my Note so far.
All ROMs gave me terrible battery life, except the stock android for around the first year, eventually it started giving me terrible battery life too.
So that got me wondering, is it possible that some kind of faulty hardware on my Note's motherboard is causing those battery drains?
[email protected] said:
So over the course of time I have used many different ROMs and also have had 5 batteries for my Note so far.
All ROMs gave me terrible battery life, except the stock android for around the first year, eventually it started giving me terrible battery life too.
So that got me wondering, is it possible that some kind of faulty hardware on my Note's motherboard is causing those battery drains?
Click to expand...
Click to collapse
I'm pretty sure that would be possible, but I'd make sure to rule out any other cause you can rule out first.
First thing to do is check on who or what is consuming the battery, so installing something like CPU Spy will let you know if the phone just keeps running at top speeds.
Because there simply isn't enough juice in these batteries to allow all parts of the phone to run full throttle for hours.
Smart phones are really at their best, when their just sitting idle and then they really shouldn't consume any power. That's what you need to check: Does it really slow down and sleep, when you're not actively using it?
And CPU Spy (or similar tools) will give you that info by telling you how much time the CPU has spent at each speed setting. If it doesn't drop to deep sleep when the phone if off the charger, screen switched off at the home screen but stays running at 100-500MHz, then you have found the reason for the miserable battery life. Now you'd just have to find what's causing it.
And that could be a long story journey...
However you could start with an empty ROM fully wiped, nothing but the ROM and the minimum set of GAPPS installed (and CPU Spy or similar for checking) empty internal SDcard, expecially no media files. If you have an external SD card, best remove that initially so you don't have to delete any data you keep on there.
If then the Note isn't guzzling battery and sleeping deeply when not used, your hardware is fine.
Then it's just a matter of adding item after item, always checking of that is causing any change to CPU states and energy consumption.
You should also try to find out of any of your five batteries has issues and use a known good one for the testing.
abufrejoval said:
I'm pretty sure that would be possible, but I'd make sure to rule out any other cause you can rule out first.
First thing to do is check on who or what is consuming the battery, so installing something like CPU Spy will let you know if the phone just keeps running at top speeds.
Because there simply isn't enough juice in these batteries to allow all parts of the phone to run full throttle for hours.
Smart phones are really at their best, when their just sitting idle and then they really shouldn't consume any power. That's what you need to check: Does it really slow down and sleep, when you're not actively using it?
And CPU Spy (or similar tools) will give you that info by telling you how much time the CPU has spent at each speed setting. If it doesn't drop to deep sleep when the phone if off the charger, screen switched off at the home screen but stays running at 100-500MHz, then you have found the reason for the miserable battery life. Now you'd just have to find what's causing it.
And that could be a long story journey...
However you could start with an empty ROM fully wiped, nothing but the ROM and the minimum set of GAPPS installed (and CPU Spy or similar for checking) empty internal SDcard, expecially no media files. If you have an external SD card, best remove that initially so you don't have to delete any data you keep on there.
If then the Note isn't guzzling battery and sleeping deeply when not used, your hardware is fine.
Then it's just a matter of adding item after item, always checking of that is causing any change to CPU states and energy consumption.
You should also try to find out of any of your five batteries has issues and use a known good one for the testing.
Click to expand...
Click to collapse
Okay to begin, the phone never drains battery when idle, never. If I charge to 100% at night around 23:00 , in the morning it would be around 90%. So that seems fair enough. Because I keep my EDGE / 2G activated at all times.
The real problem is when the screen is turned on (doesn't matter what I do).
I tried to keep the screen on for one hour, idle, doing nothing. Battery drained by a whooping 25%. So basically it's my screen which is consuming my battery. I didn't try this when I made this thread, so there's no mention of this in the first post.
So I don't think any other apps are consuming anything. Besides I hardly have any apps installed.
I got the gapps from the following link and installed the 'mini' package.
http://forum.xda-developers.com/par...apps-official-to-date-pa-google-apps-t2943900
Apart from I only have WhatsApp, Notepad, Perfect AppLock, AdAway and Chrome installed. Only a few apps since I did a full wipe yesterday night. Even flashed a stock ROM first and began from scratch.
So I don't really think it's any apps consuming any CPU, only screen is eating a ****load. Could it be the damaged screen?
Holy ****! I just recalled while writing this post, I did get this screen of this phone replace once, like one and half year ago. Could that be it? I did get it replaced from a official Samsung store though.
[email protected] said:
Okay to begin, the phone never drains battery when idle, never. If I charge to 100% at night around 23:00 , in the morning it would be around 90%. So that seems fair enough. Because I keep my EDGE / 2G activated at all times.
The real problem is when the screen is turned on (doesn't matter what I do).
I tried to keep the screen on for one hour, idle, doing nothing. Battery drained by a whooping 25%. So basically it's my screen which is consuming my battery. I didn't try this when I made this thread, so there's no mention of this in the first post.
So I don't think any other apps are consuming anything. Besides I hardly have any apps installed.
I got the gapps from the following link and installed the 'mini' package.
http://forum.xda-developers.com/par...apps-official-to-date-pa-google-apps-t2943900
Apart from I only have WhatsApp, Notepad, Perfect AppLock, AdAway and Chrome installed. Only a few apps since I did a full wipe yesterday night. Even flashed a stock ROM first and began from scratch.
So I don't really think it's any apps consuming any CPU, only screen is eating a ****load. Could it be the damaged screen?
Holy ****! I just recalled while writing this post, I did get this screen of this phone replace once, like one and half year ago. Could that be it? I did get it replaced from a official Samsung store though.
Click to expand...
Click to collapse
I'd consider playing with the brightness, just to see of something a little lower is good enough for daily use but I'd say that isn't impossible...
While Samsung liked to hype the fact that OLED would only use power on illuminated pixels, mine are mostly white because reading is what I do most on my Notes.
And then this screen on the Note 1 didn't use particularly less energy than a good LCD backlight screen according to the reviews I remember.
I also remember an article which said that the energy consumption on OLED wasn't linear and that the last 20% of brightness might cost 50% more power (the numbers are most likely bogus but the main point was that brightness/energy consumption wasn't linear).
And yes, there is most likely variation between individual screens on OLED and moreover OLED displays decay with use and over time. I haven't noticed it that much with my Note 1 yet, but my older Samsung Galaxy S I-9000 that I passed on to one of my sons developed a brightness issue: Everything below the first 100 lines or so is significantly darker than the top. I don't know wether that's a consequence of his usage pattern (Whatsapp) or some other reason, but I do know that he typically kept the display at top brightness and also kept it lit far longer than I ever did.
I've always been somewhat disappointed by the endurance of the Note 1 but I haven't really noticed any significant change with the different ROM versions. And since I was also somewhat disappointed by the performance of the device I couldn't resist replacing it with the Note 3 when that came out.
That device was better in pretty much every regard, except screen ratio: I really, really liked the 16:10 of the Note 1 a lot better than the 16:9 of the Note 3.
abufrejoval said:
I'd consider playing with the brightness, just to see of something a little lower is good enough for daily use but I'd say that isn't impossible...
While Samsung liked to hype the fact that OLED would only use power on illuminated pixels, mine are mostly white because reading is what I do most on my Notes.
And then this screen on the Note 1 didn't use particularly less energy than a good LCD backlight screen according to the reviews I remember.
I also remember an article which said that the energy consumption on OLED wasn't linear and that the last 20% of brightness might cost 50% more power (the numbers are most likely bogus but the main point was that brightness/energy consumption wasn't linear).
And yes, there is most likely variation between individual screens on OLED and moreover OLED displays decay with use and over time. I haven't noticed it that much with my Note 1 yet, but my older Samsung Galaxy S I-9000 that I passed on to one of my sons developed a brightness issue: Everything below the first 100 lines or so is significantly darker than the top. I don't know wether that's a consequence of his usage pattern (Whatsapp) or some other reason, but I do know that he typically kept the display at top brightness and also kept it lit far longer than I ever did.
I've always been somewhat disappointed by the endurance of the Note 1 but I haven't really noticed any significant change with the different ROM versions. And since I was also somewhat disappointed by the performance of the device I couldn't resist replacing it with the Note 3 when that came out.
That device was better in pretty much every regard, except screen ratio: I really, really liked the 16:10 of the Note 1 a lot better than the 16:9 of the Note 3.
Click to expand...
Click to collapse
I see. Thank you for the time you took to write this reply.
I always have my brightness to the lowest possible and yet I am facing battery drains.
Anyways, it seems this problem is beyond repair. I have literally tried every solution possible and nothing seems to have worked. So I guess it's time to move on.
Thank you for your time and information.
It's probably my screen that's consuming the battery. It can easily last up to 20 hours with 2G turned on the entire day. But as soon as I turn the screen on and start doing something, battery drains at like 1% every 60 seconds.
How old is your battery?.. I´d say get a new one if it´s older than 1 year..
Hey everyone,
My note 4 on 5.0.1 running any rom (stock, poprocks, TekHD) runs super hot. The area on the screen that is right below the camera is unpleasant to touch. When running a cpu temperature monitor I seem to identify around 60c and when Web browsing and scrolling though pages it'll go up to 70c. This also seems to be killing my battery life. Over 10 hours I'll be lucky to get 2 hours sot.
I've gotten wld and bbs and don't see any crazy wake locks that aren't supposed to be there. Largest one is my Google play music which I do use. 2nd up is Bluetooth, I'm guessing because of my android wear device. I've also done clean installs where I do a correct wipe then don't install any apps. Still horrible battery life, still lots of heat.
From reading about it sounds like the heat issue could be a bad device and I should get it replaced? Should I try picking up a new battery?
Over the course of writing this post, about 4 minutes I've gone from 17% to 10%.
Reinstall rom with factory kernel and install kernel adiutor apk for cpu control from google play. Im using rapture 3.0 without issues and battery pretty good and temp is normal.
Sent from my SM-N910T
Same problem here SM-N910G on 5.1.1 stock ROM. Installed a new genuine Samsung battery, NC. I hit about 60°C when at idle, 65°C when browsing. I wiped davlik cache and cache on teamwin, which seems to have helped a little. Battery is lucky to last 4-5 hours tops.
Did you find a solution? I thought it might have been from using Blitzwolf and Xaomi chargers, but it's the CPU getting hot, battery stays at 40°C
Are you using a custom kernel? I had an issue with a bad kernel setup and it restored my settings automatically which was the cause of my battery drain.
So I don't know if anyone else have this problem. I'm running stock Sony Xperia Z rooted, the problem was there before I rooted it too. Whenever I use the phone for semi-heavy tasks like browsing facebook.com or watching youtube videos the battery drains quicker than what's being charged.
Is this normal? Does anyone else have this problem?
As i saw on my friend phone, this is normal on stock and on any fw. IMO battery is just old and that's reason why it's happening.
normal on stock, it's batter to install CM 12.1
Does CM 12.1 fix this issue???!!!!because this issue eating my head since a long time..i m using stock rom
For problem of draining battery when charing and using phone at the same time: its normal, and not only for Stock rom, its actually problem of how phone distribute power and how demanding those apps are that you use. An because most of apps, even those well known like chrome or facebook lack any optimization and android it self really can manage that either... we end in thin phones with powerful hardware(because xz is still good in this term) that make loots of heat and need lots of power.
Solution that I found when I used XZ was buying charger that had 2A or 2,4A instead of deafult 1.5-1.8A. Its not good for battery lifespan in long term time, and it make phone a bit more hot than normally, but Its only solution that actually work: phone dont lose charge when using apps and it charge way faster than normally.
In terms of hot phone when using heavy apps(because even facebook is heavy looking how resource demanding it is)... its normal, Its really bad for usage experience, its annoying... but its normal, new phones have the same problem, OnePlus, Xperia Z3... they all the same. And its all because of power that Android need to run smooth, and thickness of devices.
In Xperia Z we have glass front and back, and glass is not that great in terms of thermal conductivity, so it can keep that temp for few minutes after usage, and it can get hot really quickly. But even if now I put wooden custom made back on my xz, and I put on chip thermal paste that I had after replacing CPU in my pc, it dont get so hot, but I use it now as a smart extension device for my TV, and with MHL cable+charging it hot all the time, but after whole month of usage as a smartTV I can say that high temp dont affect performance so beside annoying usage its not that bad.
the phone lowers charging current when it's getting too hot, i noticed it with amperly app. also thermanager.xml has listed these values in system/etc/
yes this phone is terribly designed, charging takes forever even if you are not using it