Database Users

Overheating?!

Im not sure if this is normal but the cpu temperature after like 5 mins of use always goes up to 30 degrees is this normal? I'm not overclocking and not doign much but you can feel that the battery gets real warm...
Do you guys experience the same?

CPU temperature of what device?
30C is low or normal for most PCs, and though I am not sure about mobile devices in some parts of the world it is room temperature this time of year.
For a better (more specific) answer please write what device you are measuring the temperature for and what software you are using to do it.
P.S.
The feel of the battery has nothing to do with CPU temperature. They often get warm specially while charging.

On my prophet, if I charge it, OC it and use all the radios (Bluetooth,wifi) and do processor intensive stuff like watching a video, battery status tells me it's at about 40... I haven't noticed any damage, but I only do things like this very occasionally. I don't think it should be a problem although if the battery gets too hot it will degrade.

allright im using htc p4350 Herald and I'm measuring with battery status pro...
But it might just be fine if l3v5y says somethin about 40 degrees...

I would try and keep the temp down as it will last longer running cooler, but I don't think it will impact too heavily.

Battery heats up...

I just had a couple of longish calls in a short period. Both averaged about 30 minutes or so.
The phone is HOT. It is hot on the screen and battery side. This is not the first time the phone as started to get warm after long use.
This has never happened on my Raphael. I had it happen the other day while I was using the GPS a lot too. This seems like a very bad thing to me as heat will destroy the battery and possibly chips.

Hmmm....supposedly from the HTC site:
Why does the phone heat up when I’m charging the battery or when I’m making long duration calls? more
It is normal for the device to heat up during charging. After charging, it will return to its normal temperature. It is normal for the device to heat up when you are using the same function for a long time, such as making long duration calls or recording a long video clip. Please rest assured that all HTC devices are factory tested before released. Was this helpful? Yes | No
(I say supposedly because only way to get it was using Google Cache...the page didn't pull up from the link.)
But this isn't 'warm' like I would expect from a battery...this feels hot, like when I tell someone not to put laptop on their lap because blocks vents...and then have them put hand on their laptop. That kind of hot.

Install System info widget and check the temperature of your battery, should be at 98F - 106F

I've had mine get too hot a few times. I'm assuming that's what this means, but when the phone is hot, I see the led indicator light alternate flash between green and Orange. I've taken out the battery and let it cool down and then everything was normal again. I'm beginning to agree with other people that I don't like this phone. I never had this problem, or any problem, with my Samsung moment. If this crap continues with this phone, I am giving the Samsung epic some serious thought. People have ranted and raved HTC phones. The Evo being my first one, I'm not very impressed with it once I played with it for awhile. Yeah, the specs looked impressive on paper but in real life, I don't care too much for it. I guess I will wait and see what happens.
Sent from my PC36100 using XDA App

Any idea why the phone would get warm when screen is off and you have no background apps running? I get this at work amd im sure its not caused by signal searching Im outside all night

My phone shut down from heat today.
I got into my car, turned on gps and bluetooth, put the phone into the mount, and started navigation. Sure enough, the thing shut down in about a min. The car and the mount were kinda hot too.
I had to take off the silicone case and point 1 air vent at the phone, to get the temperature to a pretty cool 31C (with charging at the same time).
On its own, I haven't seen the battery heat up, especially when the screen is off.
Perhaps that batter is defective, or you have a rogue process that's running the battery down.
How fast does your battery drain when it heats up, and normally?
The normal speed for draining the battery with the screen off is about 1% per 1 hour.

Covers, cases, holsters, in your pocket, being in a hot car (even not in direct sunlight), etc. Pretty much anything that can keep the heat from escaping the phone or add to the phone's temperature.
I hope cyanogen can be a miracle maker with the custom rom he's making, because this phone's quirks are getting on my nerves. Yeah, it's past the 30 day return deadline.
Sent from my PC36100 using XDA App

herbthehammer said:
Covers, cases, holsters, in your pocket, being in a hot car (even not in direct sunlight), etc. Pretty much anything that can keep the heat from escaping the phone or add to the phone's temperature.
I hope cyanogen can be a miracle maker with the custom rom he's making, because this phone's quirks are getting on my nerves. Yeah, it's past the 30 day return deadline.
Sent from my PC36100 using XDA App
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Click to collapse
Which other phone can run 1Ghz processors and not overheat under full load and inside a case?
I think common sense tells me I should have expected that.

I get pretty good battery life from my evo. 20 hours of moderate/high usage took me to 30-40% but I work in a pretty well air-conditioned ambulance and drive around with my phone in my lap most of the time or in my pocket on occasion and when I pick it up sometimes the screen and back cover are warm. I look at battery temp and its like 32-36 degree celsius idling like that
Edit: phones naked btw no screen protector or case for now

After a couple hectic days of ebook reading and killing my battery my phone was getting hot like really randomly and when I had the screen on for like 10 mins or more, or when I charged it or pretty much if I even looked at it wrong! On a side note I have it in the body glove case from Sprint. Also my battery life was horrible. I was going down to like 30% in like 7 hour of practically no use.
Now I was running completely stock and unrooted( I hadn't felt the need to root yet) My solution was I rooted, installed DC rom then and I believe this is what fixed it cleared my battery stats from the recovery menu. Bam my phone hasn't even gotten warm since. Also it's been a week since I did this, and I'm getting crazy battery life now( like I'm down to 70-80% in 7 hours now with light use)

[Q] Battery Temperature Questions

My Vibrant has always run warm, and I never paid much attention until I started running an over-clocked kernel. It got me to thinking:
1. I hear there is a temperature warning notification that pops up when it gets too hot. Anyone know what the threshold is for this?
2. At what temperature is damage likely (somewhere above the notification, I would assume)?
3. Are there any hardware based failsafes, such as something to prevent the battery from attempting to charge when its too hot?
I tend to run around 90 under light usage and up to 110 for heavy usage (doesn't seem too bad considering the temps can get up to 120 in the summer around here). Hotter when the battery is charging. Just caught it at 127 while browsing the web and charging, which is higher than I'm comfortable with, but I still didn't get a temperature warning notification.
- Nick

Mine can get up to 120 when surfing and charging. I usually quit what I'm doing at that point, that much heat in that small an area makes me nervous.
I've had a couple of apps that get the phone quite warm, then lock up or force a soft boot. Unfortunately I'm not able to see the temp at that point. Judging by feel it is below the 120 degree mark tho.

I have been in ovens calibrating airflow speeds (130F at 75mph) and haven't had battery problems.

GPS driving test

First, I know there are tons of GPS tests, but all of them seem to focus on the extreme accuracy and less on the casual driving GPS experience. So I thought of making a small test and by doing this, I also discovered solutions to some existing unanswered questions. This is a subjective test, made by someone with some knowledge on the subject, but I am not an expert or anything close to that.
1. The test was made during an 800Km trip. 400km were done on the way "there" during the day and 400km on the way back in the evening. I used 2 GPS software packages: coPilot and iGo MyWay for Android. Both purchased. I also used 2 chargers, a cheap charger with 1x500mA and a more expensive one with 2x500mA USB ports. All the findings below were not influenced at all by the software used.
Now come the findings in a list:
a) Accuracy - I had absolutely no issues with accuracy. My position was fixed on the road even in dense urban areas with tall buildings. Initial fix took maybe 1 minute and there were 0 problems after that. Both coPilot and iGo performed really well, even at tight roundabouts.
b) Phone temperature while charging and using GPS - this is a bit more complicated to explain. First, I used a generic phone/PDA holder. For the first few KMs I drove with the phone held firmly in place. Outside temperature was 26-28 degrees and inside was 22 degrees. Clear skies with the sun shinning all day long.
Now, on my first few kilometers I encountered the all-to-common issue of overheating. My battery got to a temperature of about 54-56 degrees C and it would stop charging. The back of the phone was VERY hot all around the camera. So I started playing around to see how I can fix the issue and found a few "tricks":
- I tried to leave a small gap between the phone and the back of the holder (5mm). This lowered the temperature by A LOT! After doing this, the phone battery never went above 51 degrees.
-I then switched to Night Mode on the GPS software. This also lowered the temp by 2-3 degrees to around 48.
- After that I tried to place a piece of paper over it, protecting the phone from direct sunlight. Result, temperature never went above 46 degrees while charging.
- As another small note, I noticed that the battery gets hotter if it is fully charged or close to it. The difference was about 2 degrees between 90% charge and 50% charge.
Also, with the cheap charger I could not get the phone under 50 degrees, with the expensive charger I got at least 2 degrees lower on the temp display in similar conditions.
c) Loosing charge while charging - I used normal car USB chargers rated at 500mA per port. While the battery temperature was under 52 degrees, I never lost charge, it actually charged slowly (1% every 10 minutes or so). If the temperature goes above 52, I start to loose charge even though the phone still shows that it is charging. I think there is a self-protect mechanism that blocks the battery from charging when it is too hot.
Conclusions (after doing many combinations and seeing the difference in temperature): the phone is great for a GPS system if you follow a few pointers:
- Never cover the back of the phone. You should always have a small space there so the phone can cool itself. (very important, 3-5 degrees difference)
- try to protect the phone from direct sunlight... Being black it absorbs a lot of heat. (important, 4-5 degrees difference)
- use a good charger and not a cheap one. (important , 1-2 degrees difference)
- try to leave it on battery until your charge level reaches 50-60% and then plug it in. (less important , 1-2 degrees difference)
- use Night Mode, if possible (less important , 1-2 degrees difference)
On my way back, when the sun was down, I never got above 50 degrees no matter what I did.
Also, iGo seemed to use a lot more resources than coPilot. While on battery alone, I was loosing charge about 1.5 times faster.
* battery temperature was measured by "Battery Status" app. The readings were verified using the not-so-scientific method of touching the back side of the phone and "feeling" how hot it was

Great post. Kind of spooky how temperamental the phone gets when it's hot; especially because it gets hot so easily. I've got a Case-Mate double-layer Tough Case on mine. I was thinking while I was putting it on there could be issues with heat dissipation. Your test makes me wary. Thanks for providing so much detail.

Had my sat nav on for around 3hours none stop today and my phone never gets hot. I use official Samsung case and the gps in the phone is better than any phone I've tested. Very happy indeed.
Sent from my GT-I9100 using XDA App

Good post and info therein.. Thank you.

Thanks!
L.

vimto25 said:
Had my sat nav on for around 3hours none stop today and my phone never gets hot. I use official Samsung case and the gps in the phone is better than any phone I've tested. Very happy indeed.
Sent from my GT-I9100 using XDA App
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Click to collapse
Where did you get the original Samsung car holder? Cause I wanted to buy it too but it will only appear on June.
As another note, do not waste your time and money by buying Clingo holders for this phone. The sticky surface does not stick to the back of SGS2 properly due to the texture of the back-plate. Your phone will fall after a few mins at the slightest bump on the road.

Thanks for the info!

One thing to mention and I think it's CRUCIAL.
The gps is a sirf star4 I think and I presume it behaves similar to older sirf chipsets.
So, most important thing.
For walking it may not be ok. On old smartphones using sirf star3 chipsets you needed to disable static navigation inside the chipset. There were ceratin programs that did this, I have not found anything for android yet. The thing is if you'r moving very slowly it keeps the position in place. If you get an inital lock 20 meters from your actual position it will remain there unless you move more than 40m meters or smt. It's very good for driving so the position does not jump around but very bad for walking. I think there will be software available soon to correct this.
And second, as older sirf star chipsets it takes much longer o connect, but once connected the signal is strong and stable in most situation. On sgs 1 you get a much faster lock (if you fixed your gps antenna that is , it reports better accuracy (5 meters vs 10-20 on sirf) and even SNR on satelites seems better. However actually driving with it gives much worse results.
Another thing i noticed is that the gps drains the battery much faster than on sgs1
So all in all I am satisifed with the gps on sgs 2. It's not as fast in locking as the first (with internet connection off) but it gets a much more stable lock and more precise.

Just tried to use a vent holder for the phone... temperature stayed at 32 degrees with AC set on 22 degrees auto. So vent holder is the way to go if you want to keep the phone cool.

Ive done a few tests with co pilot and my tracks and samsung really did nail the gps this time-it really is good. I find it strange that op said about a minuet to lock on-mines always 10 sec max cold start.

My initial cold start lock time is way more than 10 seconds ( never got under 20 seconds )... but that is influenced by a lot of factors: weather, objects around you like buildings or tall trees, the country you live in and the time you try to get a lock ( depending on how many satellites you have over you at a given time ). Still, lock time is less important, accuracy over a lengthy period of time is what I think is important.

Azra2k said:
First, I know there are tons of GPS tests, but all of them seem to focus on the extreme accuracy and less on the casual driving GPS experience. So I thought of making a small test and by doing this, I also discovered solutions to some existing unanswered questions. This is a subjective test, made by someone with some knowledge on the subject, but I am not an expert or anything close to that.
1. The test was made during an 800Km trip. 400km were done on the way "there" during the day and 400km on the way back in the evening. I used 2 GPS software packages: coPilot and iGo MyWay for Android. Both purchased. I also used 2 chargers, a cheap charger with 1x500mA and a more expensive one with 2x500mA USB ports. All the findings below were not influenced at all by the software used.
Now come the findings in a list:
a) Accuracy - I had absolutely no issues with accuracy. My position was fixed on the road even in dense urban areas with tall buildings. Initial fix took maybe 1 minute and there were 0 problems after that. Both coPilot and iGo performed really well, even at tight roundabouts.
b) Phone temperature while charging and using GPS - this is a bit more complicated to explain. First, I used a generic phone/PDA holder. For the first few KMs I drove with the phone held firmly in place. Outside temperature was 26-28 degrees and inside was 22 degrees. Clear skies with the sun shinning all day long.
Now, on my first few kilometers I encountered the all-to-common issue of overheating. My battery got to a temperature of about 54-56 degrees C and it would stop charging. The back of the phone was VERY hot all around the camera. So I started playing around to see how I can fix the issue and found a few "tricks":
- I tried to leave a small gap between the phone and the back of the holder (5mm). This lowered the temperature by A LOT! After doing this, the phone battery never went above 51 degrees.
-I then switched to Night Mode on the GPS software. This also lowered the temp by 2-3 degrees to around 48.
- After that I tried to place a piece of paper over it, protecting the phone from direct sunlight. Result, temperature never went above 46 degrees while charging.
- As another small note, I noticed that the battery gets hotter if it is fully charged or close to it. The difference was about 2 degrees between 90% charge and 50% charge.
Also, with the cheap charger I could not get the phone under 50 degrees, with the expensive charger I got at least 2 degrees lower on the temp display in similar conditions.
c) Loosing charge while charging - I used normal car USB chargers rated at 500mA per port. While the battery temperature was under 52 degrees, I never lost charge, it actually charged slowly (1% every 10 minutes or so). If the temperature goes above 52, I start to loose charge even though the phone still shows that it is charging. I think there is a self-protect mechanism that blocks the battery from charging when it is too hot.
Conclusions (after doing many combinations and seeing the difference in temperature): the phone is great for a GPS system if you follow a few pointers:
- Never cover the back of the phone. You should always have a small space there so the phone can cool itself. (very important, 3-5 degrees difference)
- try to protect the phone from direct sunlight... Being black it absorbs a lot of heat. (important, 4-5 degrees difference)
- use a good charger and not a cheap one. (important , 1-2 degrees difference)
- try to leave it on battery until your charge level reaches 50-60% and then plug it in. (less important , 1-2 degrees difference)
- use Night Mode, if possible (less important , 1-2 degrees difference)
On my way back, when the sun was down, I never got above 50 degrees no matter what I did.
Also, iGo seemed to use a lot more resources than coPilot. While on battery alone, I was loosing charge about 1.5 times faster.
* battery temperature was measured by "Battery Status" app. The readings were verified using the not-so-scientific method of touching the back side of the phone and "feeling" how hot it was
Click to expand...
Click to collapse
Great stuff! The given details are very clear and informative. Its really helpful information, thanks for sharing the valuable info.
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Another method I am using to lower temp and Battery loss is to fix it to 800Mhz while navigating, depends of course on the navigation software but sometimes even 500Mhz is enough.
Everyone should try if its ok with his nav-software, I felt no stutters on 800Mhz^^

[Q] Battery heat ?

Hi.
While playing games my Xperia Play produces lots of heat. The back of the phone, and the gamepad feels really warm.
I checked the temperature with Battery Monitor Widget and when I don't use the phone it stays around 25-30 degrees Celsius, but when I play games (even 2D ones) it goes up to 38-40.
Is this a normal thing or there's something wrong with my battery ?

RossettiX said:
Hi.
While playing games my Xperia Play produces lots of heat. The back of the phone, and the gamepad feels really warm.
I checked the temperature with Battery Monitor Widget and when I don't use the phone it stays around 25-30 degrees Celsius, but when I play games (even 2D ones) it goes up to 38-40.
Is this a normal thing or there's something wrong with my battery ?
Click to expand...
Click to collapse
I can confirm this happens. Basically it is using more charge, therefore as a side effect of that it produces more heat from the chemical reaction. Same thing when you have it charging.
It isn't horrible, but try not to let it get too hot as it may shorten the lifespan of the battery.

So this is true for all xperia plays that after some time of gaming the phone will be really warm ?

The phone will get warmer, of course... but 40 degrees is not excessively hot. It feels warm in your hand, but it's not dangerous. A dangerous temperature would be close to 50.

The highest temperature that I had was 44 degrees after a long Nova 2 session.
I am a bit worried by the fact that while browsing the net through wifi the battery heats up to 38 degrees, but it's okay as long as it's less than 50 :> ?
Thanks for the help.

I'd say if it goes above 46 or 47 you just switch it off for a while. Not only because you don't want to overheat it, but because running the phone on higher temperatures reduces battery life (higher temperature means higher resistance to conductivity for metals).

Thanks for the into that it's perfectly normal for the phone to feel warm.
Have you ever reached 50(or that 46,47) degrees on Xperia Play or any other phone ? What app made your battery that hot ?
Sent from my R800i using XDA App

My former phone, the Galaxy S had HUGE issues with temperature while using 3G. Every time I toggled it on, the phone became awfully hot and the battery drain skyrocketed. I got it on 53 degrees once, since it was in my pocket. I was a bit scared, but the phone resisted it. Still, it wasn't pleasant.
The advantage of the Xperia Play being bulky and plasticky is that it's hard to bring it to extreme temperatures. If it's hard to make it hot, it has a positive impact on battery life as well.

RossettiX said:
Hi.
While playing games my Xperia Play produces lots of heat. The back of the phone, and the gamepad feels really warm.
I checked the temperature with Battery Monitor Widget and when I don't use the phone it stays around 25-30 degrees Celsius, but when I play games (even 2D ones) it goes up to 38-40.
Is this a normal thing or there's something wrong with my battery ?
Click to expand...
Click to collapse
Yea, this happens to me all the time. When using anything that drains my battery it heats it up as well.

All batteries release heat as current passes through them. When the phone is idle, the heat released is low enough your hand doesn't feel it. As the current increases while gaming, so does the heat.
It's nothing to worry about. The batteries are designed to handle heat without being damaged.
Especially since android devices are becoming more popular in places like india, where there's a lot of ambient heat.
Sent from my R800a