Develop Bugs

[Q][Problem] Arc S reboots when putting down

Problem is:
Sometimes my Arc S is rebooting when I put it down.
If i'm gently release it from a max of 1cm height to a soft surface, its immediatley reboots.
Was checking the battery if it's not fitting good enough, but the problem is something else.
Looks like a hardware failure for me, maybe a micro crack on the motherboard?
Or what else can it be?
(Stock GB ROM)

I think you are right. It sounds like a hardware problem some-where.
If your are under warranty, then take it in.
Otherwise here is a tutorial for taking apart your phone - http://forum.xda-developers.com/showthread.php?t=1800226
Maybe you will find something if you are lucky.

Did you overclock your phone?

xyyxpp said:
Have you overclock your phone?
Click to expand...
Click to collapse
Nope.
Not even dropped it.

Kiskoko said:
Nope.
Not even dropped it.
Click to expand...
Click to collapse
How about the rom..
stock or not?

xyyxpp said:
How about the rom..
stock or not?
Click to expand...
Click to collapse
Stock ROM, stock kernel.

Repair firmware via Update Service.
If problem occurs, you know what to do - take it to repair.

Someguyfromhell said:
Repair firmware via Update Service.
If problem occurs, you know what to do - take it to repair.
Click to expand...
Click to collapse
That was my last hope too. Will try to do so ...

Kiskoko said:
Problem is:
Sometimes my Arc S is rebooting when I put it down.
If i'm gently release it from a max of 1cm height to a soft surface, its immediatley reboots.
Was checking the battery if it's not fitting good enough, but the problem is something else.
Looks like a hardware failure for me, maybe a micro crack on the motherboard?
Or what else can it be?
(Stock GB ROM)
Click to expand...
Click to collapse
It doesn't looks like a software failure,but a hardware one.

I've got Sudden Death Syndrome... now what?

I've got all the symptoms for SDS and I downloaded the eMMC check app which says I have an insane chip. I'm on the current firmware (4.1.2), so that didn't fix it for me.
How can I contact Samsung about this issue? I bought this phone from an Amazon seller.

This app only detects your hardware. It means that even if you apply a fix this app always tells you that you are insafe...
If you have an official firmware released since February, 2013 you are SAFE.
Why do you think that you have all the symptoms of SDS?

I have similar problems with my GT-N7100 which I bought from Newegg.com last November (British unit). The phone often freezes, reboots and I believe once turned itself off. Those symptoms happen several times a day and I consider this phone to be unusable at this time.
There is no US warranty and I have no clue whether anything can be done and by whom. Is this phone reparable? If yes, which outfit can do it?

Memphis_ said:
This app only detects your hardware. It means that even if you apply a fix this app always tells you that you are insafe...
If you have an official firmware released since February, 2013 you are SAFE.
Why do you think that you have all the symptoms of SDS?
Click to expand...
Click to collapse
Thanks for the response.
My phone is 6 months old now. It freezes and must be rebooted very often now, usually a matter of minutes. This even happens in safe mode.
I am running Perseus - alpha32 kernel, which I believe should include Samsung's SDS fix

WCF said:
Thanks for the response.
My phone is 6 months old now. It freezes and must be rebooted very often now, usually a matter of minutes. This even happens in safe mode.
I am running Perseus - alpha32 kernel, which I believe should include Samsung's SDS fix
Click to expand...
Click to collapse
Yeah Perseus kernel has the SDS's fix since January, 2013 so without being sure I don't think the SDS can arrive if you have this protection.
A clean installation of your system may solves your problem.
You can also try to update your firmware via OTA or Odin flash.

Memphis_ said:
This app only detects your hardware. It means that even if you apply a fix this app always tells you that you are insafe...
If you have an official firmware released since February, 2013 you are SAFE.
Why do you think that you have all the symptoms of SDS?
Click to expand...
Click to collapse
I saw that i have an insane chip and then your comment calmed me down :good:

If you use Perseus, reckon you're safe. Does it still exhibit SDS symptoms? I wouldn't worry, you'd be better off letting it die and getting the motherboard replaced anyways.

tuxonhtc said:
If you use Perseus, reckon you're safe. Does it still exhibit SDS symptoms? I wouldn't worry, you'd be better off letting it die and getting the motherboard replaced anyways.
Click to expand...
Click to collapse
How do you replace the motherboard? Who does it - would you know of a contact?
Thanks.

tuxonhtc said:
If you use Perseus, reckon you're safe. Does it still exhibit SDS symptoms? I wouldn't worry, you'd be better off letting it die and getting the motherboard replaced anyways.
Click to expand...
Click to collapse
Yes, it still has the SDS symptoms with Perseus alpha-32. I updated to Perseus alpha-36 today, but the symptoms persisted even in safe mode. I've done a factory reset and everything is okay for now, but I'm worried that it will definitely be back. I suppose I should sent it off to Samsung just to be sure?

Reuven007 said:
How do you replace the motherboard? Who does it - would you know of a contact?
Thanks.
Click to expand...
Click to collapse
By using your warranty.

WCF said:
Yes, it still has the SDS symptoms with Perseus alpha-32. I updated to Perseus alpha-36 today, but the symptoms persisted even in safe mode. I've done a factory reset and everything is okay for now, but I'm worried that it will definitely be back. I suppose I should sent it off to Samsung just to be sure?
Click to expand...
Click to collapse
Let it die then. Don't try too hard to prolong SDS. It's still under warranty right? You should get a replacement easily.

WCF said:
Yes, it still has the SDS symptoms with Perseus alpha-32. I updated to Perseus alpha-36 today, but the symptoms persisted even in safe mode. I've done a factory reset and everything is okay for now, but I'm worried that it will definitely be back. I suppose I should sent it off to Samsung just to be sure?
Click to expand...
Click to collapse
What symptoms have you got - if you 're flashing ROMS/Kernels then how can it be SDS. As I understand it SDS means that your phone is a brick. Just because it's freezing or rebooting doesn't mean it's SDS - could be many things

tuxonhtc said:
If you use Perseus, reckon you're safe. Does it still exhibit SDS symptoms? I wouldn't worry, you'd be better off letting it die and getting the motherboard replaced anyways.
Click to expand...
Click to collapse
eladwf said:
By using your warranty.
Click to expand...
Click to collapse
Unfortunately my phone is an international version, purchased last November from newegg.com with 90 day warranty. So I need an independent technician or lab to fix it and I have no clue where to start.

Reuven007 said:
Unfortunately my phone is an international version, purchased last November from newegg.com with 90 day warranty. So I need an independent technician or lab to fix it and I have no clue where to start.
Click to expand...
Click to collapse
16gb or 32 gb

Rampant reboots and freezes are also symptoms of a badly coded app, a faulty memory card, a bug in a custom kernel, a bug in a custom rom, a dying sim card, malware, a bad flash.. You get the point
Sent from my GT-N7100 using Tapatalk 2

Apologies for alarming terminology. Here is the definition of SDS I've gone by:
The Sudden Death Syndrome (SDS) issue is caused by a buggy firmware (low level machine code) on the emmc of devices, specifically, a 16GB VTU00M chip with firmware revision 0xf1. The phone dies when trying to write data to an affected block. Samsung has issued a temporary fix to avoid sudden death but this is not a permanent solution. It causes a device freeze or lock-up when attempting to write to an affected block. For devices which have undergone a lot of writes before the fix, the users experience persistant freezing which may last from 2min to even an hour.
Click to expand...
Click to collapse
My issues seem consistent with that description. I've ruled out software bugs by trying safe mode.

WCF said:
Apologies for alarming terminology. Here is the definition of SDS I've gone by:
My issues seem consistent with that description. I've ruled out software bugs by trying safe mode.
Click to expand...
Click to collapse
My GT-N7100 16GB phone fits exactly the SDS definition. Since I have no warranty, what could be done to fix this problem? It's only 6 months old phone...

WCF said:
Apologies for alarming terminology. Here is the definition of SDS I've gone by:
My issues seem consistent with that description. I've ruled out software bugs by trying safe mode.
Click to expand...
Click to collapse
Exactly! According to this definition, your phone is not showing symptoms of SDS but merely demonstrating that the fix is kicking into action. Don't you think its weird calling it a "Sudden" Death Syndrome and then thinking it should have symptoms. The irony -_-
Sent from my GT-N7100 using xda app-developers app

WCF said:
Apologies for alarming terminology. Here is the definition of SDS I've gone by:
My issues seem consistent with that description. I've ruled out software bugs by trying safe mode.
Click to expand...
Click to collapse
Since you said it seemed ok after a factory reset, I was thinking it might be something else. Not saying it's absolutely not sds, but as bushako said, it seems as it might as well be the protection kicking in, it has happened a couple of times for me too.
What you could try, is taking a look at last_kmsg immediately after booting after you get a freeze. If the log has no alarms or anything out of the ordinary, chances are it's the fix kicking in and blocking the bad commands sent to eMMC.
Sent from my GT-N7100 using Tapatalk 2

bushako said:
Exactly! According to this definition, your phone is not showing symptoms of SDS but merely demonstrating that the fix is kicking into action. Don't you think its weird calling it a "Sudden" Death Syndrome and then thinking it should have symptoms. The irony -_-
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
I see what you are saying. But if the prevention for SDS makes the phone unusable, isn't this just a lesser of two evils? Wouldn't this inevitably happen again and I would be better off sending this for warranty?

Help - S3 getting worse.

I bought my S3 At&t in india unlocked here are the problems i'm facing -
1. Main problem is I'm loosing signal frequently even my 2000Rs/30$ nokia gets full signal.
2. It connects to PC like in 1 in 1000 attempts,Sometimes it connects to pc as if it is connected to charger(no storage)
Help regarding these problems are greatly appreciated.Thank you !

What ROM is on your phone?
Do you have a defective USB port that is causing the problem with connection to your PC via USB?

audit13 said:
What ROM is on your phone?
Do you have a defective USB port that is causing the problem with connection to your PC via USB?
Click to expand...
Click to collapse
Using S3rx rom.
On UCUFNJ1 bootloader and modem (confirmed with T.emulator)

Are you using a stock kernel? Maybe flash back to a stock ROM to see if the phone becomes more stable.

audit13 said:
Are you using a stock kernel? Maybe flash back to a stock ROM to see if the phone becomes more stable.
Click to expand...
Click to collapse
Nope flashed stock kernel still loses signal

Not sure why this is happening. If it's not due to software, could be a hardware issue.
When did the problems start? As soon as you got the phone?

audit13 said:
Not sure why this is happening. If it's not due to software, could be a hardware issue.
When did the problems start? As soon as you got the phone?
Click to expand...
Click to collapse
yes.Since I bought it

Maybe the phone's hardware is defective.

audit13 said:
Maybe the phone's hardware is defective.
Click to expand...
Click to collapse
Ah,thanks.
I'm not planning to repair this 3 years old S**T phone,it always gives me problems.

You could try and find an s3 with a smashed or defective screen with working internal components for a cheap price.

audit13 said:
You could try and find an s3 with a smashed or defective screen with working internal components for a cheap price.
Click to expand...
Click to collapse
not interested bro because price already went down here (india),so I'm in hurry to sell this .....
Today it started to not charge and I'm getting it repaired because of damaged port and AC. (4.5$)

Need help!! LG G4(H815) not starting

Hi all,
so here is my problem.
Day before yesterday i had a perfectly working LG g4 H815 model with s/n 511 running on firmware v20h, when i decided to root it and install some mods.
so i flashed TWRP, installed xposed and xtrememusic mod. the phone booted normally after installing these. i didn't install any modules under xposed. the phone worked perfectly for two days. however today morning it hanged while taking photo with the camera app. when restarting it got stuck at LG logo for long time. My brother(who doesn't have any technical knowledge) pulled out the battery and restarted. Again it got stuck at LG logo. thinking somthing wrong he again repeated this only to find that it didn't power on at all this time. No LG logo no notofication light nothing.
Tried charging it(although battery was aroung 60-70%), pressing power button removing the battery. still nothing. the phone is not at all powering up.
However when i connect it with USB cable with laptop, laptop makes sound of getting usb connection detected. i took it to a service centre.
the technical guy there told that IC may have been faulty. he told me that motherboard needs to be replaced. however unofficially he may try heating the IC to get it booting.
What should i do now? Is the IC really fried. had the rooting and installing mod caused it?
Please help.
PS- the phone is imported and cannot be sent back for warranty purpose.

I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.

dsteinschneider said:
I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.
Click to expand...
Click to collapse
Hi thanks for the help.
But isn't the dreaded bootloop is that where the phone is stuck at the LG logo. Mine isn't booting at all. And the bootloop problem is due to big cores or such and not due to ic?

Mine wouldn't start at all - it bootlooped once for about a split second - then it was dead

Same is the problem with me. Bootlooped twice and then its completely dead. I have tried contacting Lg UK. Lets see what they say.

Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.

dbzgoku said:
Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.
Click to expand...
Click to collapse
Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?

dsteinschneider said:
Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?
Click to expand...
Click to collapse
thanks for the reply (although late). i have already sent the phone to LG replying as no root. Lets hope they repair it without any problems.
second i didnt do anything of anysort like placing on hot dashboard or such. one day while opening the camera app it decided to just hang and later on die on me.

I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.

dsteinschneider said:
I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.
Click to expand...
Click to collapse
so what do you suggest after repair should i keep it or sell it? Lg g4 is no doubt the best phone when considering the value for money. no phone even twice in price comes close in camera and screen quality especially. but the unreliability of this phone has made me to consider selling it as soon as i get it back.

I'd keep it if your new board is high serial

lukem99626 said:
I'd keep it if your new board is high serial
Click to expand...
Click to collapse
Well my old board was also high serial, beginning with 511

I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month

dbzgoku said:
Well my old board was also high serial, beginning with 511
Click to expand...
Click to collapse
I mean like 611 ect thats what i got from lg

dsteinschneider said:
I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month
Click to expand...
Click to collapse
Well lg did mention in my communication with them that this carries 2 year warranty.

lukem99626 said:
I mean like 611 ect thats what i got from lg
Click to expand...
Click to collapse
Didn't know that serials have gone so high

dbzgoku said:
Didn't know that serials have gone so high
Click to expand...
Click to collapse
I brought a g4 in the new year sale it has the serial of 611 i had a 601 few months back i returned it ran hot and laggy the 611 one is cool running and lag free so i think something changed

bootlooping lg g4.. please give me advice

so I guess this happens too much but I got the bootloop 1 year after I bought it, warranty expired.
called lg and they say it'll cost me about 100$ to replace the mainboard.
I don't mind paying the 100$ for it IF I can stop it from happening again
they say they'll warrant the new motherboard for only 3 month
so I was wondering is there anything I can do to stop the new motherboard to bootloop again? I saw this video https://www.youtube.com/watch?v=G3dQdS1b0aw and he says a copper heatsink adhesive will stop the issue from happening again and I was wondering if this would actually fix it or not and is there a way I can underclock the cpu to stop it from overheating again? something like a kernal editor that can fix the cpu frequencies at lower rates? anything to make me have the guts to buy the new motherboard?

mshtob said:
so I guess this happens too much but I got the bootloop 1 year after I bought it, warranty expired.
called lg and they say it'll cost me about 100$ to replace the mainboard.
I don't mind paying the 100$ for it IF I can stop it from happening again
they say they'll warrant the new motherboard for only 3 month
so I was wondering is there anything I can do to stop the new motherboard to bootloop again? I saw this video https://www.youtube.com/watch?v=G3dQdS1b0aw and he says a copper heatsink adhesive will stop the issue from happening again and I was wondering if this would actually fix it or not and is there a way I can underclock the cpu to stop it from overheating again? something like a kernal editor that can fix the cpu frequencies at lower rates? anything to make me have the guts to buy the new motherboard?
Click to expand...
Click to collapse
lgis offering longer than 1 year on it waranty wize id set up a diffrent one this is a known issue no way to prevent lg basicly has to waranty it unless u unlocked the bootloader or its physicly damaged

TheMadScientist420 said:
lgis offering longer than 1 year on it waranty wize id set up a diffrent one this is a known issue no way to prevent lg basicly has to waranty it unless u unlocked the bootloader or its physicly damaged
Click to expand...
Click to collapse
That doesn't apply in my country i asked the official lg store and they said the motherboard costs about 100$ including replacement
Do you know if there's any way i can prevent this from happening again?

mshtob said:
That doesn't apply in my country i asked the official lg store and they said the motherboard costs about 100$ including replacement
Do you know if there's any way i can prevent this from happening again?
Click to expand...
Click to collapse
Notnwithout voiding waranty

TheMadScientist420 said:
Notnwithout voiding waranty
Click to expand...
Click to collapse
Fine I don't have Warranty anyway

mshtob said:
Fine I don't have Warranty anyway
Click to expand...
Click to collapse
Thermal paste mods on the mb. Prosccessors. Disable all non essential app root or not. Do not use while charging. Are the best ways to avoid again nothing can prevent. But the thermal mods either paste or pads. Work well

TheMadScientist420 said:
Thermal paste mods on the mb. Prosccessors. Disable all non essential app root or not. Do not use while charging. Are the best ways to avoid again nothing can prevent. But the thermal mods either paste or pads. Work well
Click to expand...
Click to collapse
Could you point me to any tutorials for this please?

mshtob said:
Could you point me to any tutorials for this please?
Click to expand...
Click to collapse
https://forum.xda-developers.com/sprint-g4/general/disassemble4-g4-testin-harware-cooling-t3327640

TheMadScientist420 said:
https://forum.xda-developers.com/sprint-g4/general/disassemble4-g4-testin-harware-cooling-t3327640
Click to expand...
Click to collapse
Thank you very much