Develop Bugs

Overheating

The microsd card from SanDisk that came stock with my G2 stopped working today. Android says it is damaged and I get "semaphore timeout" issues when I put it into my computer. This really sucks since the card had all my backups and photos and some apps.
To avoid this in the future, I got a replacement card (name-brand) and I was wondering if my phone caused the damage.
I am using CM7 oc'ed to 1113MHz. I also have an extended battery (http://bit.ly/kj6f9r) and I've noticed that the phone gets pretty hot while charging or with really prolonged use. Could the heat have toasted my sd card?
Also, is a setcpu profile depending on temp a good idea? I'm not sure what temp it is actually measuring.
Thanks

Don't think heat is really the problem. Sandisk's official specs say their cards are good to 185 degrees F. That's not too far from boiling. And more than hot enough to burn your hand, so thats hotter than your phone is getting, even inside the casing.
http://kb.sandisk.com/app/answers/detail/a_id/4687/~/sandisk-cards-environmental-tolerance-%28waterproof,-temperature,-magnetic-and
And flash memory is pretty durable. These guys dunked them in coffee and cola, ran over with a skateboard, and other stuff. The result, they still worked.
http://news.bbc.co.uk/2/hi/technology/3939333.stm
Memory just fails on its own sometimes. The brand names tend to have better mean failure rates. But remember, that's just an average. They can really fail at any time. A better brand card is just less likely to fail early.
Also, I know that overclocking to 1 GHz is possible without over-volting. So I doubt the CPU clocking you mention requires much over-volting, either. And not much over-volting means not much extra heat. Lots of people on here OC to much higher clock speeds, and apparently do fine with SD card life.

Phone heating up

So when I load my GN with a lot of stuff like redownloading all my apps after a system wipe or use the camera for a long time with flash on, it heats up around the camera but not the battery. I was wondering if it's normal and if others have the same experience. Post if you do pls.
Sent from my Galaxy Nexus using XDA App

it's normal when using lots of data or heavy 3D gaming. Unless it starts burning you, theres nothing to be worried about.

neok44 said:
it's normal when using lots of data or heavy 3D gaming. Unless it starts burning you, theres nothing to be worried about.
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Thanks for the info. My GN stays at normal temp. when I'm not loading it up do much. But when it heats up, the temp. is not what I'd expect from a phone so I was kinda worried.

Mine gets warm doing anything over 3g/4g for more then 5 minutes, I see it as high as 105 F, which is not too bad i guess. I know they can go up to 140 or so I think before shutting down.
I still don't like it, but I guess all this power in these phones has to get hot.

Yeah with a computer the heat's properly evacuated but with mobile devices like notebooks and powerful mobiles you'll definitely feel the heat.
Still it's very annoying.

IIRC (from Androidcentral.com?), there's a bug in 4.0.2 and below that doesn't turn the camera threads off when using the face recognition signin. You can address this by activating and then deactivating the camera. If not, the camera simply heats up and battery life takes a hit.
I turned off the face-recognition signin and have noticed dramatic improvement in battery life. YMMV.

This do happens to my gnexus. Hot spot comes from the top close to camera area. Happens when I'm playing games or online a lot.

[Q] Does your Galaxy Note II GT-N7100 overheat?

Just got my GT-N7100 a few days ago. I noticed that the upper part of the phone (where my ear rests when I talk) heats up rather quickly. Is this something that others have experienced? Is it normal?
My old HTC Inspire 4G would stay cool for a relatively long time.
I understand that the Note II is powerful, and I love the phone, but the heat concerns me.
Should I worry or is it common? I can still return it to the vendor.
Thanks.

Are you on stock everything?

I'm not sure I understand what you mean.
This is a brand new GT-N7100 SIM free International unit. All I did was installed some apps from Google Play and Amazon Android Market. No rooting, no ROM flushing etc.

No.
If your device overheat than something is wrong.
Go to your retailer and let it fixed.
Sent from my GT-N7100 using xda premium

The processor is located near the camera flash on the top side of the phone. That side will get warmer. The CPU idles at ~35C, and any use at all pops its up to 40C, which is enough to warm the phone slightly. On stock voltages heavy use will bring it above 70C, which will significantly heat the phone. So... if it is a problem or not really depends on how hot it is getting. The N2 throttles at 80C, and if you are hitting that on stock it is defective. At sustained 80c the top of the phone will get quite uncomfortably hot - but not untouchable.

Mines gets a lil warm after moderate use - like a 10-15 min call, using tapatalk for extended periods, etc.
It will get significantly warmer if I'm drawing something on SketchBook Mob, playing Mass Effect 2, or any other high rendering 3D game. But on idle, I can't say I've really felt any spike in temperature.
Ron

I have a CDMA/LTE version with a sim slot. Yeah, I know it is kinda weird, but that's how they do it in Korea. As for heat wise, it has never gotten hot. Just mildly warm.

Acorns said:
The processor is located near the camera flash on the top side of the phone. That side will get warmer. The CPU idles at ~35C, and any use at all pops its up to 40C, which is enough to warm the phone slightly. On stock voltages heavy use will bring it above 70C, which will significantly heat the phone. So... if it is a problem or not really depends on how hot it is getting. The N2 throttles at 80C, and if you are hitting that on stock it is defective. At sustained 80c the top of the phone will get quite uncomfortably hot - but not untouchable.
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Ho do I measure the temperatures?

Reuven007 said:
Ho do I measure the temperatures?
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There are lots of apps on the market/xda for this. I use Android Tuner myself. Any temp monitoring option may require root though; I haven't tried them without.
When you do find one be sure you are measuring/aware of the difference between CPU temp and battery temp; the battery doesn't get near as warm.

This is the only thing I hate about the Note II. It's processor is located where the ear-piece is so the top end of the phone will get hot. I had the same problem with SGS2... but the SGS3 has its processor located at the bottom, so you only felt hot at the bottom and not at the top. I don't know why Samsung went back to putting the processor at the top rather than bottom on the note 2. makes no sense.

If you are not using CPU intensive apps like games or A/V players, just toggle "Power Saving" (from the Notification page or from Settings), and it will limit your CPU at below 1GHz . This will not only make the phone cooler but will also, yes, save battery life.

I'm really impressed as my Galaxy Note II stays cool all the time. My S2 and even my old iPhone 4S was getting hot really fast, especially when playing games, but my Note II doesn't have this problem .

There are also problematic apps that stays in the background and on occasion gets itself stuck at full processor state. Use something like Elixir 2 or System Panel to monitor and find these apps (and then remove them). I just removed Minimalistic Text for this very reason, which is too bad as it's a very handy app.

Thank You!
I am the original poster.
I think I figured out what was my problem: I have several Gmail accounts. All were set up to sync everything, continuously... When I disabled it, all came back to normal.
I truly appreciate the help offered by members here. It gave me a perspective, thought me a few things and prevented me from returning this beauty to the vendor prematurely.
Thanks again,
Reuven

How am I supposed to be notified of emails if I disable sync for the purpose of longer battery life?
It's odd that users have to resort to this kind of manual toggles for better life.
Beamed from Jupiter on my Galaxy Note II

AjunNg said:
How am I supposed to be notified of emails if I disable sync for the purpose of longer battery life?
It's odd that users have to resort to this kind of manual toggles for better life.
Beamed from Jupiter on my Galaxy Note II
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The Google accounts sync has subdivisions: you can decide on each of following whether to sync or not:
Calendar
Contacts
Gmail
Internet
Picasa web albums
I have on my Note II three Google accounts. To resolve my problem, now on one I sync all (except Internet), but on the other 2 only Gmail. In my case the phone seem to have had problems synchronizing the Internet. I am not sure whether on all accounts or in one of them only.
This way I get all my Gmail messages, which is what I want.

i have the sprint version and it seems to get warm in the exact area you are speaking of when searching for service. so far battery life has been great (something i've been monitoring for the last 3 days since i've gotten it) so i guess i'll just have to keep an eye on it and see.

On the galaxy S3 I had to do that to save battery. However, on the note 2 I have never had to do anything! It's that good on battery on its own. If i was you i would return the unit nd get another! I have had my unit for about 2 weeks now, and it has never overheated.
Sent from my Galaxy Note 2 - N7100

therockk said:
On the galaxy S3 I had to do that to save battery. However, on the note 2 I have never had to do anything! It's that good on battery on its own. If i was you i would return the unit nd get another! I have had my unit for about 2 weeks now, and it has never overheated.
Sent from my Galaxy Note 2 - N7100
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The battery life on my Note II is great. I had it the whole day on, moderate use, and at this point I still have 75% left over...

Reuven007 said:
The battery life on my Note II is great. I had it the whole day on, moderate use, and at this point I still have 75% left over...
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yes, but how much is "moderate use". That is the biggest problem that I have. As long as I'm going to have to use touchwiz i at least want good battery life for what my usage is.

Battery capacity halved after nine months?

After using the original Note, I decided I couldn't live with the battery life and decided to upgrade to the Note 2 last christmas. I was fully satisfied, and frequently got between 6 to 7h of screen time.
Sadly, since early june, I barely get half of that under normal usage (2-3 hours), and I've never been able to go a day without charging the phone. The phone is rooted but still on Rogers Canada's original firmware with the original Samsung battery.
I'm no novice to android, but I've run out of ideas. Is it normal for a battery to start loosing it's capacity after around 120 to 150 charging cycles?
1) I thought it might be related to my external microsd, because I started getting error messages that I was disconnecting, and the mediascanner process was running for an abnormally long time. I wiped the card, and the errors persisted. Finally, I removed it altogether and the mediascanner battery drain stoppped, but overall battery life didn't get any better
2) I comptetelly wiped the phone and started from scratch, reinstalling everything from the market. No change.
3) I've been checking per app battery usage with BetterBatteryStats, and I occasionnally get one misbehaving app that keeps the phone awake, so I installed Greenify to prevent a few of them from gobbling up resources. That's helped a lot, at least on BetterBatteryStats, but still the phone doesn't last longer. There is no more obviously abnormal app anymore.
4) I tough it might be related to the fact that I redirected all my work email to gmail, so I set it to manual mode, but it hasn't helped.
5) I did notice that the cpu stays either in deep sleep or at 1,1 ghz, almost without using the other speeds. I don't know that I can do anything about that with the stock kernel.
Is there something else I could be checking? The phone worked great for six months without gooing through all of that stuff, so the only thing I can think of is a hardware issue. Did I get a faulty battery?
Thanks for your insights.

Nothing lasts forever; buy a new battery

hmmm the 1.1ghz thing makes it seem like it could be a deeper issue, there is no reason it should be sticking at a frequency that high.. I would personally try to flash the stock rom fresh with odin.
That would be your issue, the high frequency, not the battery itself imo

wase4711 said:
Nothing lasts forever; buy a new battery
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Diomonds do

please use spell check..
d-i-a-m-o-n-d-s.....:victory:

Lol

They don't last forever if they had a beginning. . .ooooh.

reminds me of this http://en.wikipedia.org/wiki/Pinocchio_paradox

I notice thst on mine im loosing juice quick when my LTE radio is on and I'm in poor coverage area. Switching to 4g/3g/2g only helps a lot. On day when I take few pics my battery takes a hit because all pictures backup performed by dropbox etc
Sent from my SGH-T889 using xda app-developers app

Note 7 temps

I got my phone a few days ago, and I'm somewhat dissapointed cause it always feels like it's running hot. I've never had this problem on my S7 edge. Just doing some browsing and its in the 94F range. Is this normal?

While it runs a little warm when charging, I've not noticed any excessive heat unless I'm doing something computationally intensive (Ex: transcoding video). But I know of one person that returned hers because of the heat. Have you checked to see if any applications are using excessive CPU cycles or are consuming the battery faster than others?

alcedes said:
While it runs a little warm when charging, I've not noticed any excessive heat unless I'm doing something computationally intensive (Ex: transcoding video). But I know of one person that returned hers because of the heat. Have you checked to see if any applications are using excessive CPU cycles or are consuming the battery faster than others?
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I haven't seen anything out of the ordinary. I'm barely using my phone to see if its gonna start to cool down but it's just consistenly in the 90F range with light use. I wanted to see how others experience are with their phones before I decide if I want to exchange it.

kimterran said:
I haven't seen anything out of the ordinary. I'm barely using my phone to see if its gonna start to cool down but it's just consistenly in the 90F range with light use. I wanted to see how others experience are with their phones before I decide if I want to exchange it.
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Depends on the ambient temperature, is that the temperature of the battery? If yes then it sounds ok to me.
You should download GSam and monitor the temperature. Since its made out of glass and metal, it will appear hotter to touch than a plastic phone.

Here ya go, note 7 recall due to fire Risk.
Samsung is recalling the Galaxy Note 7 worldwide over battery problem
http://money.cnn.com/2016/09/02/technology/samsung-galaxy-note-7-recall/index.html

Hope it doesn't explode lol
I would disable fast charging and turn on power saver.
Just to be safe.
Also don't wireless charge.
If yours is affected by the battery explosion issue, then don't risk it.
Wait for recall instructions and play it safe.

LOL. Yeah thanks guys, guess I'll return mine then and wait for them to make some new ones, sucks cause I really like the phone and already put in a screen protector and case

Boom!
Sent from my SM-N930V using XDA-Developers mobile app