Develop Bugs

[Q] Phone turns off randomly

My phone randomly turns off when I'm not using it. (Like when I leave it too charge overnight or don't use it for a couple hours)
What could be the problem? How to fix this problem?
Thanks,
Benwaffle

are u rooted? have cwm installed? custom rom?

Rooted, ardatdat kernel, cwmr. Actually it didn't seem to happen last night, and I just installed the new kernel yesterday
Sent from my SAMSUNG-SGH-I927 using XDA

if it happens again after you changed the kernel, try a different rom and stay away from overclocking it and stuff. can't hurt to inspect your battery contacts if you spilled anything near it.

Turns off or locks? some people are getting it to lock it's called the sleep death and happens if you put your phone to charge at night with Wifi on. Some people try different Roms to fix this issue.

Hehe my phone doesn't sleepdeath...I charge it on with wifi...maybe it's different
Sent from my Samsung CAPTIVATE Glide SGH-i927 using xda premium

Aquethys said:
Hehe my phone doesn't sleepdeath...I charge it on with wifi...maybe it's different
Sent from my Samsung CAPTIVATE Glide SGH-i927 using xda premium
Click to expand...
Click to collapse
That was a very helpful post.....Nah just kidding it doesn't happen to everyone. I have had my phone since December last year and I can count on 1 hand how many times it has happened to me. I always charge at night with WIFI on. But when it does happen I simply hold the power button till it reboots, so not a very big issue to me.

Reviving this thread because I'm having a similar problem...
Running on stock, rooted.
It happens often enough for it to be a problem.
Only concern is when I go to sleep and rely on my phone as an alarm clock. I need my phone to work
Please note last charge cycle on the attached screenshot. Battery was at 84% and completely dead after sleeping for 8 hours. It doesn't even show me how the phone died, or what made it die.
During the day, I think I have the same problem. My phone will simply not turn on at times. I have to do a battery pull before I can get the phone to turn on again.

Check the battery. Take it out and put it on a flat surface like wood or metal. Spin it like you would as a bottle, if it does that, then your battery is swollen and will cause problems like what you're experiencing. If that does happen, you need to replace the battery, as that is your only option. Sorry . It happened to me, but i was covered under warranty.
Sent from my SGH-I927 using xda premium

doode2011 said:
Check the battery. Take it out and put it on a flat surface like wood or metal. Spin it like you would as a bottle, if it does that, then your battery is swollen and will cause problems like what you're experiencing. If that does happen, you need to replace the battery, as that is your only option. Sorry . It happened to me, but i was covered under warranty.
Sent from my SGH-I927 using xda premium
Click to expand...
Click to collapse
Battery looks fine. Not visually swollen and doesn't spin on a flat surface. Wish I had another battery to test this out...

I saw that you're using another rom. Did you wipe battery stats and cache before installing it? I remember with my DHD I didn't do that and it would die randomly here and there. After I reinstalled the rom, it was working alright.
Save your apps on TB and do a nandroid backup before doing it so you don't lose any data.
Also, try out the literom, it's basically stock without bloatware.
Sent from my SGH-I927 using xda premium

doode2011 said:
I saw that you're using another rom. Did you wipe battery stats and cache before installing it? I remember with my DHD I didn't do that and it would die randomly here and there. After I reinstalled the rom, it was working alright.
Save your apps on TB and do a nandroid backup before doing it so you don't lose any data.
Also, try out the literom, it's basically stock without bloatware.
Sent from my SGH-I927 using xda premium
Click to expand...
Click to collapse
I've been running it on stock, just rooted.
I don't believe wiping battery stats will do much, considering they're wiped every time you charge to 100%. But the battery level is definitely off. I reboot my phone sometimes and end up going from 50% down to about 10%. It's not reporting accurately.
I will be installing a new rom over the coming weeks, just have no time right now. I just wanted to know if this seems to be a hardware problem or software.

Let me know how it goes. Sorry for the late response. I have been busy with school and work
Sent from my SGH-I927 using xda premium

I'm having this same issue with my Glide of 3 weeks. I remember having a similar problem several years ago - can't remember what phone it was - may have been the N900. I think that one was fixed by conditioning the battery. Where you drain it to 20% and then recharge several times. Does that technique sound familiar to anyone else?
I am stock GB/rooted and not opposed to flashing a new rom if that would help. Any suggestions on a minimal rom with working camera? (my one requirement)

doode2011 said:
Let me know how it goes. Sorry for the late response. I have been busy with school and work
Sent from my SGH-I927 using xda premium
Click to expand...
Click to collapse
Looks like it was a rom specific issue. More importantly, it was a battery drain. Something was causing my phone to hang and drain the battery overnight if I didn't leave it on charge. Not happening with CM10.1
Gingerbread on this phone has a lot more bugs than I normally like. I don't know how Samsung didn't catch these or found it ok to market the phone despite knowing these bugs exist. For example, stock music app periodically slows down and force closes for no reason.

My girlfriends phone is having this same issue after I re flashed the stock rom, rooted it, and installed twrp. Does anyone have any insight to this issue before she throws the phone against a wall?
Sent from my Galaxy Nexus using xda app-developers app

doode2011 said:
Check the battery. Take it out and put it on a flat surface like wood or metal. Spin it like you would as a bottle, if it does that, then your battery is swollen and will cause problems like what you're experiencing. If that does happen, you need to replace the battery, as that is your only option. Sorry . It happened to me, but i was covered under warranty.
Sent from my SGH-I927 using xda premium
Click to expand...
Click to collapse
Thank you! I was having this issue, and this helped me figure it out. My battery was definitely swollen, and after seeing this, I now notice it actually doesn't even sit flat in the battery compartment anymore. Luckily when I called AT+T they said it was still under warranty and sent me out a new battery with little hassle.

[Q] My glide is screwed after wifi download overnight

Hola, noob here with a problem.
My rogers captivate glide was behaving perfectly fine one night when I decided to download some large files over wifi. It was also plugged in for charging and I was using some app (forgot the name) to prevent my screen from turning off so I won't lose my wifi connection. I left it like that and went to sleep. Upon waking up, my phone was hotttt , the screen still on but it has faded into a greenish color with scan lines. It was unresponsive and I had to pull the battery. Ever since then, my phone would last no more than a few minutes before freezing and fading into scan lines. I thought it was a battery issue, so I got new batteries but that didn't help one bit. I even flashed the kernel and still no help. I did resets, recovery, wiped caches, took out sd card and sims, stock builts. Nothing worked. I can't connect the phone to the computer or wall charger either. The screen would instantly freeze and fades out upon plugging in the micro usb cord.
Have anyone had similar problems? Did I fried the soc? I don't think it's a problem with the screen since it was perfectly responsive the few minutes it worked. This noob needs helppp.
I've posted a video on youtube but I couldn't link to it, but if you search "captivate glide problem" you'll see a video showing the freezing problem I have. I'm from the US also, so I don't know if I could get samsung to fix it through warranty since the phone is Canadian.

Well I downloaded Modern Combat 3 and that was like about 1Gb and the screen turn off because I didn't touch it while it downloaded, and wifi kept going so I'm not sure why it didn't stay on for you
Sent from my SGH-I927 using xda app-developers app

Idk about the phone so much , but i am computer technician and it sounds like you overheated it, what we might call "burned it up".
The screen symptoms you have described are a dead giveaway, especially the lines
If this was a laptop, I would be sending it off for a reflow .
Typically, the circuit board gets so hot, the solder on the ships melts enough for a tiny bit of separation. This requires a "reflow ", where specialized equipment is used to repair the solder connections.
First, you should to a factory reset , then try to do a warranty claim. (unless u have insurance from your cellular provider, then u might check with that)
*edit, sorry, I missed the warranty part the first time I read ur post*
The next option would be to check with the guys at www.mylaptopisbroke.com
Email them, ask if they concur with my diagnosis and if they can help.
I have been dealing with them for about two years and always been highly satisfied. (They are in NY, I am in TN. I have sent literally dozens of devices to them)
If none of those 3 options work out for you, start looking for a new phone.
Sorry :-/
Sent from my SGH-I927 using xda app-developers app

Sorry, but I agree with the previous poster, sounds like a hardware issue. Start the warranty process, can't know if it's gonna work til you try it.
Not to try to close the barn door after the horses have bolted, but in case you get into a similar situation with your new phone, there's an easier and safer way. When you're in the WiFi screen hit the menu button and under advanced settings there is the option to keep WiFi on during sleep. Also, as you have found out, be careful with any apps that directly control the hardware.

Had a very similar scenario as the OP described. Went to bed with it plugged in and streaming DI FM in high quality, woke up in the middle of the night by burning myself on the metal back plate. Unplugged it and pulled the battery, when I woke up in the morning after a rather worrisome night sleep I discovered my WIFI would not work unless I was within a foot of the router otherwise it wouldn't get any signal. I assumed the devices internals were damaged and that is what caused the problem, glad to know someone else aside from me has had a similar issue. Best bet would be trying to get a replacement through the warranty unless you have some type of protection plan through your carrier.

I see, thanks guys for the inputs. I had a feeling it's a goner. I can't do the warranty since it's rogers and I'm from the U.S.; bought it off Newegg unlocked without a warranty. So I guess I'm screwed.

Had the same thing happened to me. Had to send it to sammy to get fixed the had to replace the whole board
Sent from my SAMSUNG-SGH-I927 using Tapatalk 2

ericpeacock79 said:
Idk about the phone so much , but i am computer technician and it sounds like you overheated it, what we might call "burned it up".
The screen symptoms you have described are a dead giveaway, especially the lines
If this was a laptop, I would be sending it off for a reflow .
Typically, the circuit board gets so hot, the solder on the ships melts enough for a tiny bit of separation. This requires a "reflow ", where specialized equipment is used to repair the solder connections.
First, you should to a factory reset , then try to do a warranty claim. (unless u have insurance from your cellular provider, then u might check with that)
*edit, sorry, I missed the warranty part the first time I read ur post*
The next option would be to check with the guys at mylaptopisbroke
Email them, ask if they concur with my diagnosis and if they can help.
I have been dealing with them for about two years and always been highly satisfied. (They are in NY, I am in TN. I have sent literally dozens of devices to them)
If none of those 3 options work out for you, start looking for a new phone.
Sorry :-/
Sent from my SGH-I927 using xda app-developers app
Click to expand...
Click to collapse
I've contacted mylaptopisbroke and they told me that phone repairs have been discontinued until midwinter 2013.
Is there anywhere I could buy a new soc??

Try mobiletechvideos.com or phonedoctors.com

I've heard of reflowing oneself by putting it in the oven at 550 degrees for 10 minutes or something. FWIW.
Not sure I'd want to do it myself, not having better information, but perhaps there's something out there some googling will reveal.

I've look at the sites, no captivate glide stuff. Guess captivate glide is not that popular a model. I've read about reflowing, but too chicken to try. I did took took the phone apart but saw that the LED is on the board itself and couldn't be detached; it's housed in some soft rubber feely box. I had a feeling it would melt in the oven.

in the options you can change it to keep wifi on all the time.. i keep mine on all day.

bobbinthreadbare said:
in the options you can change it to keep wifi on all the time.. i keep mine on all day.
Click to expand...
Click to collapse
Yeah... I know that now... too late though.. ahah

What have you done with this?
Have you turned it on recently and found it still works?
I have a similar problem and other threads have suggested it's a software problem that might be fixed by installing a new ROM via odin

[Q] Random power off issue

my epic 4g touch was on the cyanogenmod 10.1 wild for the night rom v. jan23v2. every time, if my phone were off a charger for 5-10 minutes the screen would flash to different brightness levels then turn off. it would do this every time since that rom. in order to fix the issue, i tried using sfhub's el29 root to go back to stock to try flashing the same updated rom. i was on el29 rooted and the issue still occured. i would have to plug it in for it to turn on again. is this a battery issue or is it something else? my battery is over a year old. any help would be appreciated. if you need more info, just ask

Time for a new battery.
Sent from my SPH-D710 using xda app-developers app

graydiggy said:
Time for a new battery.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
thank you. any idea on where to get a samsung one cheap? can i use my sprint warranty to get a free replacement?

Peter41x said:
thank you. any idea on where to get a samsung one cheap? can i use my sprint warranty to get a free replacement?
Click to expand...
Click to collapse
Amazon will have OEM batteries. Be careful though, some will label them like OEM but they are fake. You will probably be able to get a new one from Sprint or Samsung, though.

Peter41x said:
thank you. any idea on where to get a samsung one cheap?
Click to expand...
Click to collapse
I've had good luck with cheap eBay ones for $3-$5. (~$10 for 2 + external charger, shipped from China)
Originally bought a cheap 1800mAh for my Epic, but kept it around and am using in my E4GT (when the orinal battery "puffed" and wouldn't hold much of a charge) Recently added a "2200mAh" one and external charger. It's a tiny bit thicker than my 1800, but still fits under the stock cover. I havent noticed the "2200" giving any better battery life than the "1800" - both work well and I've had no problems.

This issue is happening to me too but seems to occur when I'm downloading something like an MMS or app, or even an image intensive webpage. The screen flashes to different brightness levels and then the battery would suddenly "drain" to zero, where the software tells me it's at zero, but with a little extra charge and a reboot, the power level will be where it was before shutting down.
And none of this occurs while plugged in so I'm reasonably sure it's an old battery, I'd just like some confirmation. What gave it away though? The flashing screen thing had preceded a loss of signal so at first (and for about a week or so) I thought that was what it was until I found this thread.

phamkl said:
This issue is happening to me too but seems to occur when I'm downloading something like an MMS or app, or even an image intensive webpage. The screen flashes to different brightness levels and then the battery would suddenly "drain" to zero, where the software tells me it's at zero, but with a little extra charge and a reboot, the power level will be where it was before shutting down.
And none of this occurs while plugged in so I'm reasonably sure it's an old battery, I'd just like some confirmation. What gave it away though? The flashing screen thing had preceded a loss of signal so at first (and for about a week or so) I thought that was what it was until I found this thread.
Click to expand...
Click to collapse
I would say you need a new battery.
Sent from my SPH-D710 using xda app-developers app

graydiggy said:
I would say you need a new battery.
Sent from my SPH-D710 using xda app-developers app
Click to expand...
Click to collapse
Thanks.
When I went to get a new battery, the guy pulled the battery out and spun it on the counter. If it spins, it's expanded, and indicative of being on its last leg or already dead. Of course, you could also palpate the battery and you will feel the bulge but the spin test is simpler, definitive, and more entertaining. Just posting in case someone else runs into this problem or a similar battery problem and come across this thread - try the battery spin test.

[Q] R800i Battery & heat issue

Hello,
I've browsed the xda forums and few others extensively for solution of my issue, though to no help at all.
For the starters some numbers and general info:
Phone: R800i Xperia Play, 2.6.32.9-DooMKernel, Xperia NXT v.1.3.
Only default stuff running in the background.
For testing and possible solution, apps I've installed:
Advanced Task Manager,
No-Frills CPU (min. 134 MHz, max 1.114 GHz, smartass, sio),
Battery Defender (Temp 32C, voltage: 3.0V, changed from 4.0V).
I always keep Data, WiFi, Bluetooth, GPS off, unless I need them. Brightness is about 30% most of the time, no auto-brightness control.
For solution purpose I've got manual network selection for 2G, usually it is 2G/3G auto search - never got issues with this.
I've got two batteries, stock one and a Tell Me one, both 1500 MAh, both never had any issues.
Today morning (7AM), as usual, I've disconnected fully charged phone from the charger. I haven't noticed a thing that could be off about the phone.
I've went to the work, and around 11 AM I've messaged a little, and then I've noticed a weird thing - phone was very hot and the battery info said that it is on around 30%. Of course, first I've tried was to reboot the device, and lower the maximum frequency of the CPU.
Unfortunately it wasn't a bug or a mistake - phone really had around 30% charge left. I've got a usb cable from a co-worker to keep the phone from dying.
In the meantime, I've tried resetting the phone to factory defaults, tried flight mode, setting everything to off - nothing helped. Also, what's more weird - phone was charging incredibly slow (that might be because of charging from PC USB) when turned off and it still was hot.
I've realized that phone is getting really hot only in one area - near top right corner (place where light sensor is), on the backside, after you extend the phone (there is a little screw there, under 'sticker').
After getting back to home, I've tried charging the first battery to 100% - it completed, using stock charger, but it took quite longer than expected. Discharging is quite fast - 1% per 4-5 minutes. In ~50 minutes I've got 90%. This gives roughly 7 hours of work on battery. In flight mode, with everything turned off, with CPU on 134 MHz.
On a second battery, which I have in right now, I am steadily progressing from 93% to the 0% at the speed of 1% per 3 minutes.
Phone is +2 years old, not on warranty.
Any advice could be really appreciated.

Is it a stock battery or an aftermarket? I had an aftermarket battery once. It had a similar response in my phone. Bought another battery. OEM and solved it.
Sent from my R800at using xda premium

Maybe it's battery fault.
One of my battery did the same thing (it even got even bigger due gasses inside it). Replaced it and it's working fine.
If it happends on both batteries, maybe it's hatdware issue. In worste case, something inside phone is shortcutted and drainibg current, causing heating. Maybe opening phone and cleaning parts inside could help.
Sent from my R800i using xda app-developers app

Wouldn't hurt to open it up and using an eraser clean the battery contacts inside phone and on battery itself. Then use a can of compressed air to blast that bad boy.
Sent from my R800at using xda premium

I've got two different batteries, stock one that came with phone, and a second aftermarket one, which was rarely used - only on long trips when I wanted to play. Both of them couldn't be damaged like that.
Phone never fell on the floor, is always in protective rubber-like 'case' and of course it never even touched water.
Right now heat is strong enough to be a bit painful if you slide the phone out and touch the light sensor area on the backside. I will try to get some torx screwdrivers and open up this part, but I doubt I will find anything. I was wondering if switching back to stock rom could help.
I'm really at loss here since I don't wanna buy new one, though they're cheap right now (about 150$ in my area with 24 month warranty, without any contract), since I've got some holiday plans and wanted to have some more funds. I can go by with the 4-5 hour discharge time if I have a cable on me since I'm working at the office with computers. I can always charge the phone, but knowing that usually I never even fell under 80% after 8 hours at work is kind of bothering.

Have you reformatted the phone via flashing a ftf file... see if that fixes the issue.

Maybe try to use it without battery. Connect charger, remove battery while still powered on, and wait 15minutes (as i recall, it will not turn off). If phone is still hot, then it's not battery related problem.
Sent from my R800i using xda app-developers app

Bakisha said:
Maybe try to use it without battery. Connect charger, remove battery while still powered on, and wait 15minutes (as i recall, it will not turn off). If phone is still hot, then it's not battery related problem.
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
Actually I've tried this and I've got some results. Phone turns off when it stays this way in OS for a while, so I did that in Boot manager, which I thought won't be affected by OS itself, and I was right - phone stays on, with screen on. Unfortunately, it is very hot in the 'usual' place. So we can root out the possibility that this is a battery issue.I am not quite sure, but also this is certainly not antenna, since it is off in the boot manager, as well as WiFi, BT and GPS.
So could it be that the kernel itself, which must have some module responsible for power management, went crazy? That is just my wild (hopeful) guess, and I wish that flashing will help. Any ROMs that you can advice?

FouLu said:
Actually I've tried this and I've got some results. Phone turns off when it stays this way in OS for a while, so I did that in Boot manager, which I thought won't be affected by OS itself, and I was right - phone stays on, with screen on. Unfortunately, it is very hot in the 'usual' place. So we can root out the possibility that this is a battery issue.I am not quite sure, but also this is certainly not antenna, since it is off in the boot manager, as well as WiFi, BT and GPS.
So could it be that the kernel itself, which must have some module responsible for power management, went crazy? That is just my wild (hopeful) guess, and I wish that flashing will help. Any ROMs that you can advice?
Click to expand...
Click to collapse
Well, to test if everything is working properly, flash stock firmware with flashtool (even kernel). Test all functions of phone with apps (wifi, BT, gps, 3g, flashlight, tear-front camera). If all works, maybe some chip is overheating.
In that case, if you don't know how to open phone, maybe it's best to take it to service.
If you do know how to open it, first start cleaning enterier. If that don't help, try to power it while dissasembled, and see what chip is overheating and google for it's model to see what it is.
Sent from my R800i using xda app-developers app

Bakisha said:
Well, to test if everything is working properly, flash stock firmware with flashtool (even kernel). Test all functions of phone with apps (wifi, BT, gps, 3g, flashlight, tear-front camera). If all works, maybe some chip is overheating.
In that case, if you don't know how to open phone, maybe it's best to take it to service.
If you do know how to open it, first start cleaning enterier. If that don't help, try to power it while dissasembled, and see what chip is overheating and google for it's model to see what it is.
Sent from my R800i using xda app-developers app
Click to expand...
Click to collapse
Thanks for advice. I will flash the phone completely to stock and test it. Actually, if it is turned off, it is not heating up but starts to when I try to charge the battery.
I'm working at IT company, but my knowledge ends at the desktop computers actually, certainly I am not into electronics - I can tell when capacitors on motherboard are starting to go bad, but that's it. Starting from laptops, some parts are to small and prone to damage to be just opening and looking around.
I suppose if the stock kernel won't help, I will seek assistance of some service since they always give some kind of warranty for repairs. Of course, I will keep this topic updated, since there might be same kind of lost soul with the same problem.

FouLu said:
Thanks for advice. I will flash the phone completely to stock and test it. Actually, if it is turned off, it is not heating up but starts to when I try to charge the battery.
I'm working at IT company, but my knowledge ends at the desktop computers actually, certainly I am not into electronics - I can tell when capacitors on motherboard are starting to go bad, but that's it. Starting from laptops, some parts are to small and prone to damage to be just opening and looking around.
I suppose if the stock kernel won't help, I will seek assistance of some service since they always give some kind of warranty for repairs. Of course, I will keep this topic updated, since there might be same kind of lost soul with the same problem.
Click to expand...
Click to collapse
When you are on stock kernel, test offline charging too (phone turned off, but charging). So heating problem is only limited to battery-charging electronics-kernel).
Post your results when/if it's fixed, no matter what they are. Good luck

Bakisha said:
When you are on stock kernel, test offline charging too (phone turned off, but charging). So heating problem is only limited to battery-charging electronics-kernel).
Post your results when/if it's fixed, no matter what they are. Good luck
Click to expand...
Click to collapse
Unfortunately, after flashing to stock R800i_4.0.2.A.0.79.ftf I still have this weird overheating issue and the battery is draining really fast. Seems like this is hardware problem, not a software one, since I tested it in many different ways to no help at all.
I will not let go off my XPlay, as I will visit service and try to repair The Best Gaming Phone to Date, though I will buy a new phone, which will be Xperia S, since I've got my eyes on it ever since I played on my friend's one - Final Fantasy 7 with OpenGL plugin in fpse looked really great, and the controls were fine for my tastes.
When I get the XPlay fixed, I will update this thread, since I like this phone and would like to have it back and running.
Thanks for all the help, I really appreciate it

[Q] Note2 Overheats while Powered Down?

Greetings,
My brother's Note2 has started being seriously unreliable. Just seeing it today at Thanksgiving Dinner, I witnessed the phone sitting powered off and warm, to the touch. I would estimate it to be around 110 - 120*F POWERED OFF!
When I did turn it on, the I looked at the battery useage, and noted the NFC function was using 30%. I then went into the settings to disable it, but it was already disabled. Then the phone crashed and rebooted. I pulled and inspected the battery. The water marker was dry, the battery was not warped or bulging, and it was not hotter then the processor area of the phone.
Has anyone seen this?
He has a new battery on its way so perhaps that is the problem, however I suspect faulty hardware or perhaps software.
He went to the store and was told he would need to pay $200 for a warranty claim, outrageous!
Thanks in advance!
Matt|ttaM

It would most probably be the battery problem. If u using a custom rom or kernel, reflash/flash a different one.
Sent from my GT-N7105 using xda app-developers app

tiderfish said:
Greetings,
My brother's Note2 has started being seriously unreliable. Just seeing it today at Thanksgiving Dinner, I witnessed the phone sitting powered off and warm, to the touch. I would estimate it to be around 110 - 120*F POWERED OFF!
When I did turn it on, the I looked at the battery useage, and noted the NFC function was using 30%. I then went into the settings to disable it, but it was already disabled. Then the phone crashed and rebooted. I pulled and inspected the battery. The water marker was dry, the battery was not warped or bulging, and it was not hotter then the processor area of the phone.
Has anyone seen this?
He has a new battery on its way so perhaps that is the problem, however I suspect faulty hardware or perhaps software.
He went to the store and was told he would need to pay $200 for a warranty claim, outrageous!
Thanks in advance!
Matt|ttaM
Click to expand...
Click to collapse
Just do a factory wipe..
and format all your memory partitions..
i had this crashing issue once.. most probably a rouge app messing up..

Do as @geekynoob said above and after flashing new ROM (possibly Custom ROM) do following :
1. Charge it to 100%
2. Install BetterBatteryStats
3. Install CPU Spy Plus
4. Reboot phone
5. Launch both apps and exit them (they'll keep running in the background collecting data)
6. Take reading through (just look at app screen) both after using your device normally for minimum 6-7hrs.
Share those readings here (through Screenshot probably). We will try to troubleshoot issues, if any remaining, after fresh install.
Btw, I don't think it has got anything to do with battery.

Thanks for the replies, guys.
He is still on the stock ROM. I will try what you mentioned and report the findings.

Just a quick update. He has read this post, and taken your advisements. He says the phone doesn't overheat now, but he is having issues connecting to WiFi.
Any suggestions?
Matt|ttaM

tiderfish said:
Just a quick update. He has read this post, and taken your advisements. He says the phone doesn't overheat now, but he is having issues connecting to WiFi.
Any suggestions?
Matt|ttaM[/QUOT
Smack that thanks button if I helped.
N7105 Note 2 LTE International powered by Illusion ROM 2.6
Plasma Kernel 2.02
Sent from a small country named Singapore
Click to expand...
Click to collapse

He told me he removed more apps, and now the wifi works and the battery lasts all day again. So it would seem problem solved.
I am just curious how an app could be pegging the battery useage for NFC even though it is off in the settings.