Recovering data after a full wipe - Galaxy S III Q&A, Help & Troubleshooting

Hello,
First off I want to explain what happened exactly. Since April I am using an HTC One, but I gave my S3 to my girlfriend. I gave it to her exactly like I used it: running CM10.1 nightly's, no other mods, no custom kernels, etc. I updated her S3 once every few weeks with a new nightly. It performed normally, like it has been doing for many months.
Since a few weeks, the S3 started to show problems. The camera app would act weird sometimes, but it wasn't anything big. Then the freezes came. Once every few days, the phone would freeze and she needed to reboot. In the past week, the freezes happened many times daily. No matter what you did with the phone, it would freeze very fast. It just got worst and worst, until yesterday the phone wouldn't even turn on anymore. It would stay in the bootup screen.
The problem was, I had only downloaded a CM10.2 nightly update recently, had no Android 4.3 Gapps yet and hadn't succeeded in making a proper Titanium Backup (due to the phone being so unstable, it would freeze at 80% of the backup). Moving to CM10.2 without a wipe wasn't the best idea, but having no TB, I didn't want to wipe data. In the end, desperate measure called for desperate actions. I flashed a nightly build of CM10.2 I had downloaded already on the phone, but still the same. It wouldn't get past bootup animation.
To keep this story as short as I can, I ended up flashing the latest Samsung Touchwiz build (4.1 based) via Odin, but even that wouldn't get past the bootup animation. So I managed to get in some sort of recovery, where a wipe data option was available. Did that, phone started working normally again. Only problem is, this wipe data option apparently was a different kind of beast. I am used to the "wipe data" option that deletes your apps + data, etc, but doesn't touch your photo's, music, etc. This one did.
Is there any known way to recover some of the files that got deleted?
And if anybody is in the mood, any explication on what exactly happened to this S3? I mean, nothing changed, it was working normally for months with CM10.1...
Kind regards

I've never found anyone that recovered any data from the internal sd card, there are pc programs that claim to be able to do this for sd cards and hard disks but doubt they will work on MTP device.
Freezing is common for a minority of phones due to nand block failures, or it could be due to the rom you were using.

boomboomer said:
I've never found anyone that recovered any data from the internal sd card, there are pc programs that claim to be able to do this for sd cards and hard disks but doubt they will work on MTP device.
Freezing is common for a minority of phones due to nand block failures, or it could be due to the rom you were using.
Click to expand...
Click to collapse
Thank you for the quick reply. I suspected this but I though it's worth asking.
I guess my S3 was one of this minority, can't imagine CM10.1 to be the bad guy here. Ah well, at least now she can use the damn thing again. RIP photo's and other important data though. It's near impossible now for Samsung to get me to buy another product from them again in the future.

Unless you have a government grade software/hardware that's being used on digital forensics then it's really quite impossible to recover the files.

For future, look at FolderSync on play. It will sync sdcard data to the cloud or to a computer that is always on.
I set my sdcards syncing over wifi whilst I am asleep. I never lose anything.

Related

3G/H+ connection upon reboot issue :(

Hi,
Lately I have noticed a weird behavior on my phone, and was wondering if this is normal.
I first noticed this a few weeks ago when I rebooted the phone and saw that the YouTube widget did not refresh upon reboot, instead it gave me a message "Please check the network. Touch to retry". When I touched to retry it then loaded the clip thumbnails as it should. From the moment I noticed this, it never stopped behaving this way for several weeks now.
Once I investigated this a little more, I noticed that all my widgets (weather, mail, etc...) do not auto refresh as well after I restart the phone since then.
The weird thing is that 3G/H+ data eventually gets connected after a few more seconds (approx 10-15), and then all the widgets can be refreshed manually, or eventually auto refresh themselves as configured. This issue only happens when the phone boots up, it gets no connection for a few seconds, then it gets connected normally and no more issues.
Now I am thinking this is not as it should be, if my memory serves me right the phone was not behaving like this when I first got it last summer, and I am pretty sure I would have noticed this since it is bugging the hell out of me lol! Also when I reboot and have access to a remembered Wifi connection, no such issues can be observed, even weirder.
As far as setup goes, you can see in my sig. I have to say though that I have reverted back to stock ROM (2.3.3 in my case), tried several different modems and kernels. And yes I did fully wipe and format the phone (cache, system, data, dalvik, sdcard) before re-installing stock. And I get the same problem (if this is in fact a problem).
On a side note (maybe related), when I go to recovery and wipe data, cache, dalvik, then format cache, system, data, sdcard, is the phone really FULLY wiped? I am thinking it is not, and that this may be the root of this behavior. For example, I know that the /efs folder does not get erased when wiping the phone clean. There must be some other parts of it that do not get touched either, and I am betting this has something to do with it all.
Lastly is there an even more thorough method for getting the phone back to it's original state, or at least wiping all files that may not belong and do not get wiped in the method I use?
Thanks for anyone taking the time to read and try to answer this. Sorry for the long post
Raz...
Does anyone have any idea? Please help!!
:Bump:
Last time, I will give up after this.
It is just beyond me that no one in this community of geniuses has a comment on this matter.
Thanks!
Raz...
Whilst I can understand your frustration, after that comment, I'd be very surprised if you got an answer to/help with your problem. Totally unnecessary.
Raziel2k6 said:
:Bump:
Last time, I will give up after this.
It is just beyond me that no one in this community of geniuses has a comment on this matter.
Thanks!
Raz...
Click to expand...
Click to collapse
MistahBungle said:
Whilst I can understand your frustration, after that comment, I'd be very surprised if you got an answer to/help with your problem. Totally unnecessary.
Click to expand...
Click to collapse
The comment was not meant to insult anyone, and I apologize if it did. What I meant is that given the amount of highly knowledgeable people on this forum, it's just hard to believe no one has a comment or some tips to share with me and others. No disrespect intended here, in no way!
Raz...

Galaxy S3 Media Battery Drain

Hi to all friendly forum people!
Since several weeks now, I've been experiencing this unfortunate "media" battery drain. From the google and XDA search results I found out that others have experienced it as well but the solution offered didn't help me. One "fix" suggested to wipe the memory card to see if this fixes the issue (I thought this really might be the core problem since I had that notification center message about the isyncr scanner running on the background). So I backed up my SD card contents and did a format. Unfortunately this wasn't helpful. I left the card blank and uninstalled isyncr, restarted the phone but the media drains continues its course.
Does anyone have a solution that doesn't involve factory reset.
Here, check these pictures out: (since I don't have enough posts, here is the link in this format: goo. gl / PVXGU
Thank you very much for your input! :good:
P.S. Another thing I witnessed several times now is that *some* times the charging of the phone takes about 4 hours (2x more than normal) and I've seen the phone in the last 2 months to just power off itself without any pressing of the power button or lack of battery. Still no sudden death, but I find it odd and unacceptable for smartphone of this class.
hope u have upgraded to the latest firmware. all these issues are of old firmwares. the new ones are very stable.
provide info on your firmware,kernel, etc. so that senior members can help u better.
lefttobleed said:
...
Click to expand...
Click to collapse
Oh, sorry! I'm on Jelly bean 4.1.2
Kernel: 3.0.31-699321 [email protected]#1 SMP PREEMPT Thu Dec 13 19:25:10 KST 2012
Baseband version: I9300XXELL4
I had a similar issue before and the only thing that fixed it was factory reset. I hope this time it won't be necessary to come to this...
Questions go in the QA section, not general
I have seen the media scanner go mad a few times on my SG3, go to app manager and force stop media storage, clear data and then reboot the phone.
Even after doing this the scanner will still run for 30 odd minutes after each boot. An app called rescan media root can be used to temporarily disable the scanner.
Try 'Rescan Media' app from Playstore. It stops the media scanning process from running amok.
Fail...
I decided to report on my results after the factory reset I did with the hope to fix the problem.
It's actually very disappointing to see that even after the factory reset, format of the SD Card and taking out the card altogether the problem wasn't fixed in either of the attempts.
So, I did the factory reset, went through the activation process, installed all my apps again and then used TitaniumBackup to restore the data of all those apps. Then after the phone's battery was exhausted, I charged it fully to initiate the test and see if the issue is still present. Unfortunately the "Media" process is once again the top battery hogger and is the main reason behind the accelerated drain I witness on my Galaxy s3. Another thing I witness is that randomly, out of the blue I see in the notification bar that my SD card has been unexpectedly removed and then that it's ready for access again. All in all, I can access the card's contents but this notification is suspicious and probably part of the problem, but I'm almost sure that the card itself isn't the faulty one. I purchased it from reputable source and the brand is trustworthy in my opinion. The problem has to be in the phone itself.
Another thing is that after the factory reset I didn't let the phone run without any apps or restoring the app's data. Maybe I should have, since some those app's data could be in the core of this issue and TitaniumBackup might have brought it to its previous state, but I forgot to and wanted to access some of my apps' contents prior to the FactoryReset.
All in all, this problem proved to be very irritating, time consuming and unacceptable in my opinion. Maybe I should contact Samsung or the retailer that sold me the phone since it's still warranty covered, but I guess I will end up selling it and purchasing something else, probably a Nexus 4 or an iPhone (despite all the ridicule circulating about it, being a toy with limited capabilities bla bla bla... From the feedback of numerous people I know, owning iOS devises I don't know one that had issues with them that caused them that much wasted time and energy)
So that's all I had to say. I wish luck to anyone else experiencing the same problem and take care!
Some of my suggestions here might help.
http://forum.xda-developers.com/showthread.php?t=2060852
Media Scanner Fix?
Sent from my SGS3 using Tapatalk
ROM Sotmax Ultimate V13
Kernel Yank555.lu-V3.1
Rosenthal said:
my SD card has been unexpectedly removed and then that it's ready for access again. All in all, I can access the card's contents but this notification is suspicious and probably part of the problem, but I'm almost sure that the card itself isn't the faulty one. I purchased it from reputable source and the brand is trustworthy in my opinion. The problem has to be in the phone itself.
Click to expand...
Click to collapse
While you are sure that the card itself isn't faulty I would be highly suspicious of it being the root of the problem. Media scanner naturally scans the card and if it's faulty then naturally it would loop. I had the same issue an solved it by purchasing a new SD (admittedly my original one was quite old)
tqgia2 said:
While you are sure that the card itself isn't faulty I would be highly suspicious of it being the root of the problem. Media scanner naturally scans the card and if it's faulty then naturally it would loop. I had the same issue an solved it by purchasing a new SD (admittedly my original one was quite old)
Click to expand...
Click to collapse
I took out the card altogether and did a full battery cycle. The problem persisted.
@corrsea
Thank you! i will look into that and see if something works.
Please read forum rules before posting
Questions go in Q&A
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator
Had the same issue with my S3.
Turned out that the SD card was dying (the card brand is Team Group), this caused it to be unmounted by itself and then mounted again (sometimes showing notification “sd card removed unexpectedly”), hence triggering the “Media” scanning process and significantly draining the battery.
I created an application to monitor how many times the SD card was removed, and turned out to be unmounted every ~3 mins!!!
I then bought a new Transcend 32GB Class 10 card (made in Korea), and until now, this never happens, no reports from the application whatsoever, and no media process eating my battery.
I just published this app in the play store now, this is the link:
https://play.google.com/store/apps/details?id=com.sdcardmonitor
just large # of files
Symptoms: Battery runs down very quickly, phone heats up, battery use shows Media using 80-90% or more. New 32GB memory card, 20GB used containing 120,000 files. No auto unmount/mount noticed.
Solution: Unmount memory card when not in use, must be done after each restart as well.
I have to report the "Media Battery Drain" also.
I'm on the latest Italian H3G Firmware (JB 4.1.2 JZO54K.I9300XXELLA).
I had an important drain sometimes, the last time it happened the battery was drained from 100% to 8% in 4 hours. This is not normal, in my opinion.
The problem come out after I mounted a Sandisk Class10 microSD... so viewing that, apparently, there is no correlation between the brand of the sd card and the issue, because a lot of people is experiencing issues with various brands.
I formatted the SD card, after a backup, but the problem is present even if the micro SD is empty...
Probably the solution that fits well for me is switching to Cyanogenmod 10.1 ( a friend of mine is using that rom without issues).
I'll search a solution too...
_____EDIT_____
I forget to report that my phone becomes hot during the battery draining, approximately in direction of the microSD position.
Fixed!
I fixed the problem uninstalling Google Play Music and the updates of "Music Hub" by Samsung.
Before doing this I tried to fix the issue placing .nomedia files into media folders, but that didn't work for me.
My battery lasts more or less one day against the 4 hours when the "media drain issue" was present.
I hope it could be helpful for others!
My solutions.
1. format sd card.
2. uninstall facebook app...
I've had same problem however after removing facebook app everything turned out to be fine.
You don't have to reset anything. Just format sdcard(internal and external) and remove facebook app.
Rosenthal said:
I decided to report on my results after the factory reset I did with the hope to fix the problem.
It's actually very disappointing to see that even after the factory reset, format of the SD Card and taking out the card altogether the problem wasn't fixed in either of the attempts.
So, I did the factory reset, went through the activation process, installed all my apps again and then used TitaniumBackup to restore the data of all those apps. Then after the phone's battery was exhausted, I charged it fully to initiate the test and see if the issue is still present. Unfortunately the "Media" process is once again the top battery hogger and is the main reason behind the accelerated drain I witness on my Galaxy s3. Another thing I witness is that randomly, out of the blue I see in the notification bar that my SD card has been unexpectedly removed and then that it's ready for access again. All in all, I can access the card's contents but this notification is suspicious and probably part of the problem, but I'm almost sure that the card itself isn't the faulty one. I purchased it from reputable source and the brand is trustworthy in my opinion. The problem has to be in the phone itself.
Another thing is that after the factory reset I didn't let the phone run without any apps or restoring the app's data. Maybe I should have, since some those app's data could be in the core of this issue and TitaniumBackup might have brought it to its previous state, but I forgot to and wanted to access some of my apps' contents prior to the FactoryReset.
All in all, this problem proved to be very irritating, time consuming and unacceptable in my opinion. Maybe I should contact Samsung or the retailer that sold me the phone since it's still warranty covered, but I guess I will end up selling it and purchasing something else, probably a Nexus 4 or an iPhone (despite all the ridicule circulating about it, being a toy with limited capabilities bla bla bla... From the feedback of numerous people I know, owning iOS devises I don't know one that had issues with them that caused them that much wasted time and energy)
So that's all I had to say. I wish luck to anyone else experiencing the same problem and take care!
Click to expand...
Click to collapse
Same, exact issue. I'm researching a solution now.
SOLVED: by rm'ing directory with thousands of files
SOLVED (for me). Same issue. It lasted for months. I bought new SD cards twice. Finally solved it by identifying a directory on /mnt/sdcard (i.e. /storage/sdcard0, i.e. the internal storage) with thousands of files, from a buggy beta version of a todo-list app. I removed the app, rm -rf'ed the directory, ... and the phone is now back to normal! Multi-day battery life!
TL;DR look for directories with thousands of files.
Totally disappointed
Rosenthal said:
I decided to report on my results after the factory reset I did with the hope to fix the problem.
It's actually very disappointing to see that even after the factory reset, format of the SD Card and taking out the card altogether the problem wasn't fixed in either of the attempts.
So, I did the factory reset, went through the activation process, installed all my apps again and then used TitaniumBackup to restore the data of all those apps. Then after the phone's battery was exhausted, I charged it fully to initiate the test and see if the issue is still present. Unfortunately the "Media" process is once again the top battery hogger and is the main reason behind the accelerated drain I witness on my Galaxy s3. Another thing I witness is that randomly, out of the blue I see in the notification bar that my SD card has been unexpectedly removed and then that it's ready for access again. All in all, I can access the card's contents but this notification is suspicious and probably part of the problem, but I'm almost sure that the card itself isn't the faulty one. I purchased it from reputable source and the brand is trustworthy in my opinion. The problem has to be in the phone itself.
Another thing is that after the factory reset I didn't let the phone run without any apps or restoring the app's data. Maybe I should have, since some those app's data could be in the core of this issue and TitaniumBackup might have brought it to its previous state, but I forgot to and wanted to access some of my apps' contents prior to the FactoryReset.
All in all, this problem proved to be very irritating, time consuming and unacceptable in my opinion. Maybe I should contact Samsung or the retailer that sold me the phone since it's still warranty covered, but I guess I will end up selling it and purchasing something else, probably a Nexus 4 or an iPhone (despite all the ridicule circulating about it, being a toy with limited capabilities bla bla bla... From the feedback of numerous people I know, owning iOS devises I don't know one that had issues with them that caused them that much wasted time and energy)
So that's all I had to say. I wish luck to anyone else experiencing the same problem and take care!
Click to expand...
Click to collapse
I agree, I wouldn't recommend Samsung phones to anyone by now. I'm also thinking of moving to iOS. At this point I don't care about customization, or anything, I just want a phone that doesn't lag or has this annoyances.

[Q] Not sure what's wrong, random reboots, battery or ram issue?

EDIT: Wow the issue was really REALLY stupid. turned out i was using a HUGE picture as my lockscreen wallpaper, and it was causing hang ups because I guess it was trying to load that huge picture into ram every time it went to sleep or something. change the picture, everything was fine. I'm really dumb.
My galaxy s2 has been fine pretty much since launch. Switched over to cyanogenmod a long time ago, been updating to their nightlies about once a month. Recently tho, starting like this week, my phone has been randomly rebooting like crazy, to the point that the phone is unusable. Any thing I try to do results in a soft reset. The fastest way I've found to recreate the issue is to turn on and off the screen twice quickly, causes a crash/reboot, dont know what to call this.
AFAIK I still have access to recovery, odin, etc.
I've tried flashing an older nightly, wiping cache, factory reset, still get crashes really easily. I've ruled out my micro sd card being the problem, it still randomly reboots without it. Any idea what I can do to try and narrow down what the problem is?
Do a clean install of stock in the first instance, run it for a few days & see if it persists. If it stops happening, then obviously something CM-side causing it. If it doesn't replace battery. If that doesn't fix it, take it to a local mobile repair shop for diagnosis.

Freezing issue with S6 Edge 128GB (internal memory issue?)

So I'm having this very strange yet pretty awkward to recreate issue, where the phone will freeze on certain apps, mostly ones that require storage (camera, gallery, settings, etc). It will freeze for a good minute or so before either finishing its task, saying the app is not responding and asking me to wait or close, or it will just forget the task completely.
The most noticeable instance regarding this is when I simply try to take photos with the camera. When I've taken a good 5-10 photos at least, I go to the gallery and I don't see my pictures there. Okay, so I go back to the camera to try take more pictures - it's frozen. The camera still moves but the shooting/recording button(s) don't do anything. I wait a while - gallery opens automatically either with my photos there or not, it's really indecisive as to when and if it will keep the photos or videos I took.
I have already returned the phone to Samsung who claimed the issue was repaired after it being returned only 1-2 working days of me sending it (suspicious?) whilst I have a feeling all they did was factory reset the phone (even though I already did this - as I wrote such on a form I had to fill out, print and send with the phone physically). I mentioned the issue in great detail and how to recreate it but it seems Samsung can't even fix an issue on their own device.
However in all fairness to Samsung, it is very hard to recreate after a factory reset. It does only seem to happen when the internal memory is actually being used, as I found out when I put all my music back onto the phone. Currently my phone is full of around 90GB worth of music (the device has 128GB storage, so it's definitely not full, close to full, nor should it give any reason for apps to freeze) and absolutely no custom apps installed whatsoever (as I was told not to install anything from the Play Store during return of the phone to Samsung - even though they factory reset it once again anyway). I noticed after receiving the phone back today after I put my music back onto it that the apps started freezing up again. So the issue is still occurring.
This does seem to have only started happening since an Android update though (to 6.0.1 I believe?) or it genuinely might just be a hardware fault that Samsung is not diagnosing. But if anyone is able to help me diagnose it (or possibly resolve it) so I can prove to Samsung there is an issue with the device itself, that would be greatly appreciated! Thanks a lot for reading
Have you found a solution bro????
ImperoDroider said:
Have you found a solution bro????
Click to expand...
Click to collapse
I ended up RMA'ing the phone to Samsung and they said there was no issue with the phone.
Apparently some app is causing the freezing as the issue seems to be non-existent (or at least very infrequent) when the phone as no apps from the play store installed on it. Didn't really find the time either to test it for a long period without any play store apps installed because, frankly, what's the point of a smartphone without being able to use it for the apps you merely use the smartphone for?
I just upgraded to an S7 instead and currently it's running fine with the same apps (internal memory 32gb, external memory 128gb). Haven't had a single freezing issue with the camera or anything since purchase.
Terrum said:
I ended up RMA'ing the phone to Samsung and they said there was no issue with the phone.
Apparently some app is causing the freezing as the issue seems to be non-existent (or at least very infrequent) when the phone as no apps from the play store installed on it. Didn't really find the time either to test it for a long period without any play store apps installed because, frankly, what's the point of a smartphone without being able to use it for the apps you merely use the smartphone for?
I just upgraded to an S7 instead and currently it's running fine with the same apps (internal memory 32gb, external memory 128gb). Haven't had a single freezing issue with the camera or anything since purchase.
Click to expand...
Click to collapse
But I'm still dying here bro. Wasted my salary of 3 months to by this piece of S##it and now I'm lost.
Thank you for your kind reply bro :good::good:
ImperoDroider said:
But I'm still dying here bro. Wasted my salary of 3 months to by this piece of S##it and now I'm lost.
Thank you for your kind reply bro :good::good:
Click to expand...
Click to collapse
Did you try what I did? Which is to hard reset (re-install) the phone. Try use it without any apps installed for a while and see if the issue still persists.
If it does still persist when you have no apps installed, go ahead and RMA it. It should still be under warranty if you only bought it recently. Even if it's not, shouldn't cost too much to fix it (hopefully).
ImperoDroider said:
But I'm still dying here bro. Wasted my salary of 3 months to by this piece of S##it and now I'm lost.
Thank you for your kind reply bro :good::good:
Click to expand...
Click to collapse
Boot to safe mode and leave it like that for a while. If there is no freezing or crashing then it's caused by a 3rd party app. If freezing and hanging occurs it's faulty emmc.

S21 crashing/rebooting 1-2 times/day. Any tips on troubleshooting?

I have as SM-G991U (256 GB S21 US version, stock everything but using Nova Launcher) that is randomly freezing/crashing then rebooting on me 1-2 times/day. Does android have any kind of crash log I could look at to try and figure out what's causing the problem? On the samsung forums, their support reps suggest running in Safe Mode, which I have, but it's not very useful because I can't reproduce the problem on demand and it usually happens 1-2/day, but sometimes less, so unless I just ran in safe mode all the time, that wouldn't tell me much. Plus, it would only tell me it's an issue caused by one of a hundred or so apps which, again, is not helpful.
So I'm hoping there is a crash log or something somewhere because I have no idea what triggers the crashes. The other night, it was sitting on a wireless charger, the screen wasn't on, then all the sudden it rebooted. It's not specific to any app or anything I'm doing. If there are no crash logs (which would be frustrating and disappointing), any other troubleshooting ideas are welcome!
Look for a memory leak. Typically a poorly written 3rd party apk.
Try clearing system cache.
Make sure auto restart isn't enabled...
dougleto said:
I have as SM-G991U (256 GB S21 US version, stock everything but using Nova Launcher) that is randomly freezing/crashing then rebooting on me 1-2 times/day. Does android have any kind of crash log I could look at to try and figure out what's causing the problem? On the samsung forums, their support reps suggest running in Safe Mode, which I have, but it's not very useful because I can't reproduce the problem on demand and it usually happens 1-2/day, but sometimes less, so unless I just ran in safe mode all the time, that wouldn't tell me much. Plus, it would only tell me it's an issue caused by one of a hundred or so apps which, again, is not helpful.
So I'm hoping there is a crash log or something somewhere because I have no idea what triggers the crashes. The other night, it was sitting on a wireless charger, the screen wasn't on, then all the sudden it rebooted. It's not specific to any app or anything I'm doing. If there are no crash logs (which would be frustrating and disappointing), any other troubleshooting ideas are welcome!
Click to expand...
Click to collapse
Hi mate
For logs info check here and here
You can always flash firmware , using home_csc , to avoid factory reset the phone , if the problem is system related it will help
If is app related
Try booting in safe mode to see if problem goes away...
MAX 404 said:
Hi mate
For logs info check here and here
You can always flash firmware , using home_csc , to avoid factory reset the phone , if the problem is system related it will help
If is app related
Try booting in safe mode to see if problem goes away...
Click to expand...
Click to collapse
Thanks! I'll definitely try these out. I tried safe mode, the trouble is it's not really great as a diagnostic because the phone will go from 4-24 hrs between resets during normal operation, and since a phone in safe mode isn't terribly useful, it's hard to keep it in safe mode for long enough to see if that fixed the issue, if that makes sense. And then, if it did fix the issue, it just narrows it down to 1 out of a hundred apps! But maybe I'm missing something. Is there additional information I can find if I run in safe mode that would help suss out the problem?
blackhawk said:
Look for a memory leak. Typically a poorly written 3rd party apk.
Try clearing system cache.
Make sure auto restart isn't enabled...
Click to expand...
Click to collapse
Thanks! I know how to clear cache but not how to check for memory leaks. Do you have a tool you'd recommend to do that? And I had never heard of auto restart before, so thanks for that. I confirmed that it is NOT enabled (that would have been a face palm moment!).
dougleto said:
Thanks! I'll definitely try these out. I tried safe mode, the trouble is it's not really great as a diagnostic because the phone will go from 4-24 hrs between resets during normal operation, and since a phone in safe mode isn't terribly useful, it's hard to keep it in safe mode for long enough to see if that fixed the issue, if that makes sense. And then, if it did fix the issue, it just narrows it down to 1 out of a hundred apps! But maybe I'm missing something. Is there additional information I can find if I run in safe mode that would help suss out the problem?
Click to expand...
Click to collapse
Is not easy , you just need to be methodic
See if you can find anything useful in the logs first
Reflash firmware , use home-csc , see if it help
Have you notice if the phone fails under any specific circumstances?
If that does not help and if you can really relate the problem with any specific app you may try to freeze or uninstall suspicious app and let it run for a day , Package disabler app is a good option , it is easy to enable or disable app but is not free, you could try this one , is a debloater tool , it allow you to disable app... may be easy that having to uninstall / install by hand
I'm also having the same problem. Had the phone since June, it didn't start to occur until late August, which leads me to suspect it is an update related issue.
GillBates21 said:
I'm also having the same problem. Had the phone since June, it didn't start to occur until late August, which leads me to suspect it is an update related issue.
Click to expand...
Click to collapse
I'm glad you posted today, I've been meaning to post again here because I tried troubleshooting and am still having issues. In fact, it crashed twice today when I was trying to send a text message.
I installed one of the log applications (can't remember which one at the moment) but it wasn't really helpful. They didn't seem to catch any information related to a crash even though they were logging data at least twice when it crashed.
Then I tried reflashing using home-csc using ODIN and that ended up soft-bricking my phone (and yes, I followed all the instructions and used home-csc) so I had to reflash everything and do a full factory reset. That seemed to help, reducing the crashes from once/day to once/2-3 days for a few weeks, but now it's back to ~once a day (sometimes more, sometimes less).
So if anyone has any other idea, I'm all ears. When I was reflashing and stuff, I noticed in the recovery mode (or whatever it's called) options that you can look at logs. Does anyone know if one of those logs would have crash-related data or any other ideas of what to try? This is incredibly frustrating, especially that it's persisting after a factory reset. Argh!
dougleto said:
I'm glad you posted today, I've been meaning to post again here because I tried troubleshooting and am still having issues. In fact, it crashed twice today when I was trying to send a text message.
I installed one of the log applications (can't remember which one at the moment) but it wasn't really helpful. They didn't seem to catch any information related to a crash even though they were logging data at least twice when it crashed.
Then I tried reflashing using home-csc using ODIN and that ended up soft-bricking my phone (and yes, I followed all the instructions and used home-csc) so I had to reflash everything and do a full factory reset. That seemed to help, reducing the crashes from once/day to once/2-3 days for a few weeks, but now it's back to ~once a day (sometimes more, sometimes less).
So if anyone has any other idea, I'm all ears. When I was reflashing and stuff, I noticed in the recovery mode (or whatever it's called) options that you can look at logs. Does anyone know if one of those logs would have crash-related data or any other ideas of what to try? This is incredibly frustrating, especially that it's persisting after a factory reset. Argh!
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So what I tried to do is roll back all the default google app updates. Ex: Android system webview, Google app itself, etc etc. I factory reset it without backing up any apps (but pictures and messages etc), It was working for a few days and then it happened again. Which further reinforces my thinking that my problem is software based.
GillBates21 said:
So what I tried to do is roll back all the default google app updates. Ex: Android system webview, Google app itself, etc etc. I factory reset it without backing up any apps (but pictures and messages etc), It was working for a few days and then it happened again. Which further reinforces my thinking that my problem is software based.
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So I'm curious why you think that means it's a software issue. If this isn't a widespread issue with the S21 and after we've both done a factory reset and still have the issue, that makes me think it could be a hardware issue. Of course, there could be some software incompatibility with an app that most people don't have installed or a bluetooth connection or something, which is why I really want to find a useful crash log (and find it rather absurb how hard it is to find a useful crash log on android, come on guys, it's a mature OS, some kind of crash log seems pretty basic!), because otherwise, it could be a ton of issues and I can't reproduce it. Ugh.
The reason is that the "few days" after the reset and restoring pictures, messages (but not apps) from backup, where there were no crashes at all (where previously it would happen at least 2 times per day).
GillBates21 said:
The reason is that the "few days" after the reset and restoring pictures, messages (but not apps) from backup, where there were no crashes at all (where previously it would happen at least 2 times per day).
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Got it, that makes sense. I'm on t-mobile and just got an update this morning. We'll see if that improves anything because my device restarted 4 times yesterday
I havent had a crash like this since i disabled chrome and other google stuff, and downgrading google apps lol.
GillBates21 said:
I havent had a crash like this since i disabled chrome and other google stuff, and downgrading google apps lol.
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How did you disable chrome and what other google stuff did you disable? (There's obviously quite a lot of google services that can't be disabled)
After the most recent monthly update, my phone has gone from rebooting multiple times/day to once every 2-3 days, which is more manageable but still super annoying. It is incredibly frustrating to me that there are no good tools to troubleshoot a crash (at least that I've ben able to find). Honestly, it's driven me to consider an iPhone for the first time in my life .
My trouble is back... I will be scheduling a fix with samsung soon so I can RMA it
Check the below link. This seems to be a hardware problem which got solved after Samsung replaced the motherboard.
Samsung Restart problem
So I bought this phone for my wife. Since I received the phone, after a day the phone started crashing whatever app she was on and then take you back to lock screen without having to go through a full restart process but it was definitely a restart as you would need to enter your pin again as opposed to fingerprints.
Since it was within 15 days of purchase I returned and reordered another one from Samsung, and to my surprise exact same issue. What are the odds of having two brand new phones having exact same issues.
This leads me to believe it must be a software issue. I just received this 2nd new phone last Friday.
Yeah, I think what I was experiencing was a hardware issue (it definitely went through the full restart process, not what is described in the previous post). And from the link posted by sandystays above, it looks pretty common. I contacted Samsung support and was not impressed at all. They walked me through a number of troubleshooting steps that weren't helpful then had me take my phone to UBreakIFix. I did, they ran a diagnostic and their tools couldn't find anything wrong so they said Samsung should replace it.
Contacted Samsung, told them I had taken it in. They said I needed to take it to a technician (again, right after telling them I just had). They then said, oh, you'll have to mail it to us and you'll get your phone back in 7-10 business days. Their suggestion for what to do for a phone in the meantime? Buy a prepaid phone then return it when I get my phone back (which a) is unethical and b) wouldn't work anyways since they're locked). Ridiculous. They also admitted that this is a very common problem, so I asked why they just won't send me a replacement device if it's so common to which they had no real answer, just "that's our policy".
Eventually, I contacted T-mobile (my carrier) and was very pleasantly surprised. After me telling them the issue and the steps I'd taken to troubleshoot it, they sent me a replacement phone (recertified, but still) that arrived in 2 days. WAAAYYYY better than Samsung. The entire process made me a bit jealous of my wife's iPhone. If she had had a similar issue, we could have taken it to an apple store and not had the whole "our policy is that you have no phone for 7-10 business days" nonsense from Samsung AND the backup and restore process is still way better on iPhones than on any android I've ever owned. How there is no easy and reliable backup/restore mechanism on android after so long is beyond me.
Bottome line: if you have a similar issue, it's very likely a hardware problem (my replacement phone has been fine for 3 days now). And avoid Samsung support if you can!
dougleto said:
Yeah, I think what I was experiencing was a hardware issue (it definitely went through the full restart process, not what is described in the previous post). And from the link posted by sandystays above, it looks pretty common. I contacted Samsung support and was not impressed at all. They walked me through a number of troubleshooting steps that weren't helpful then had me take my phone to UBreakIFix. I did, they ran a diagnostic and their tools couldn't find anything wrong so they said Samsung should replace it.
Contacted Samsung, told them I had taken it in. They said I needed to take it to a technician (again, right after telling them I just had). They then said, oh, you'll have to mail it to us and you'll get your phone back in 7-10 business days. Their suggestion for what to do for a phone in the meantime? Buy a prepaid phone then return it when I get my phone back (which a) is unethical and b) wouldn't work anyways since they're locked). Ridiculous. They also admitted that this is a very common problem, so I asked why they just won't send me a replacement device if it's so common to which they had no real answer, just "that's our policy".
Eventually, I contacted T-mobile (my carrier) and was very pleasantly surprised. After me telling them the issue and the steps I'd taken to troubleshoot it, they sent me a replacement phone (recertified, but still) that arrived in 2 days. WAAAYYYY better than Samsung. The entire process made me a bit jealous of my wife's iPhone. If she had had a similar issue, we could have taken it to an apple store and not had the whole "our policy is that you have no phone for 7-10 business days" nonsense from Samsung AND the backup and restore process is still way better on iPhones than on any android I've ever owned. How there is no easy and reliable backup/restore mechanism on android after so long is beyond me.
Bottome line: if you have a similar issue, it's very likely a hardware problem (my replacement phone has been fine for 3 days now). And avoid Samsung support if you can!
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On the second phone I still have the 2wk window to return. I am contemplating if I should just return altogether. I had bought an s21 Ultra as well and that seem to be working OK.
Two s21+ phones with same issue, what are the odds of hardware problem? But what if it is the entire batch that is bad.
isiddiqi said:
On the second phone I still have the 2wk window to return. I am contemplating if I should just return altogether. I had bought an s21 Ultra as well and that seem to be working OK.
Two s21+ phones with same issue, what are the odds of hardware problem? But what if it is the entire batch that is bad.
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Your issue sounds different to me. Mine definitely fully rebooted, I have no idea what is going on with yours, it sounds like your crashes are locking the phone or something, that could definitely be software. Good luck!

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