Not a screen of death but maybe a glimpse of it - Samsung Galaxy Note 20 Ultra Questions & Answers

My Note20U5G has had this small glitch for a while:
When I am using it, especially it I am opening an app window or typing inside one, EVERYTHING on my screen disappears for like 1 second. The only thing left is the homescreen wallpaper (without icons on it) and after that 1 second everything comes back to normal, if I was typing the screen where I left of, I am taken back to continue typing, etc... Now, even though this happens only once or up to twice a day, I figured it could be a sign that something is wrong.
So what I did was, is that I deactivated all apps that (in my opinion) could've contributed to this; onehand operation plus, live wallpapers, some apps in the background such as wireless power sharing, that I really never use.
However, no help. The twice a day glitch continued.
Next, I wiped cache using the "safe mode" or whatever it is called. I did this 2 days ago. And yesterday the whole day phone operated without glitches. But as day passed today I got one again.
As I am clueless what to do next I figured to do a hard reset, that is set the phone to factory settings.
Since I've owned this phone since November, there's some preparation to do before reseting to factory settings, so I thought to ask you guys if someone else had this glitch, as I was unable to google for it.
Thanks

Looks like a system UI crash and spontaneous recovery.
Do you have any apps put to sleep /standby or enlisted in deep sleep esp system apps
Also do you have power saving turned on.
Any thing that you changed in developers options.
I would update my phone to latest firmware and factory reset it.
Update all apps
Report back with an update

fizzingbees said:
Looks like a system UI crash and spontaneous recovery.
Do you have any apps put to sleep /standby or enlisted in deep sleep esp system apps
Also do you have power saving turned on.
Any thing that you changed in developers options.
I would update my phone to latest firmware and factory reset it.
Update all apps
Report back with an update
Click to expand...
Click to collapse
Nope, I don't have power saving on.
Here are my deep sleep apps. Nothing worth mentioning there IMO, all of them are some apps I might use but I don't ever need them running in the background.
If I go for factory reset, what is the best way to do it and no lose any personal data by chance. Obviously, I would back up photos to my computer... But other than that, what should I be careful about?

Try clearing the system cache.
Factory reset time, may be malware or maybe the OS or a vital system apk got corrupted.
Almost always caused by a 3rd party app especially launchers.
You got an SD card slot, use it!
It's a data drive; you have a dual drive PC
OS, download folder and apps go on internal storage.
Critical data, user files, music, vids, DCIM (move images here once a week or so) and backup copies of apps, app settings backup, phone contact backups, etc go on the SD card.
Use ApkExport to copy all your apps... no Playstore needed for a reload.
Everything you need for a full restore should be on the SD card. Think it through completely to avoid unpleasant surprises.
The Lexar 512 gb V30 card works well $75.
Other cards may be faster; only use a name brand card with at least a V30 rating.
Note: backup the SD card to at least 2 hhds that are physically and electronically isolated from each other!

blackhawk said:
Try clearing the system cache.
Factory reset time, may be malware or maybe the OS or a vital system apk got corrupted.
Almost always caused by a 3rd party app especially launchers.
You got an SD card slot, use it!
It's a data drive; you have a dual drive PC
OS, download folder and apps go on internal storage.
Critical data, user files, music, vids, DCIM (move images here once a week or so) and backup copies of apps, app settings backup, phone contact backups, etc go on the SD card.
Use ApkExport to copy all your apps... no Playstore needed for a reload.
Everything you need for a full restore should be on the SD card. Think it through completely to avoid unpleasant surprises.
The Lexar 512 gb V30 card works well $75.
Other cards may be faster; only use a name brand card with at least a V30 rating.
Note: backup the SD card to at least 2 hhds that are physically and electronically isolated from each other!
Click to expand...
Click to collapse
LoL I didn't know there was a memory slot, didn't need to think about it since I switched from a 128gb phone to this 256gb. Yeah, gonna get an sd card. Thanks

vdamir78 said:
LoL I didn't know there was a memory slot, didn't need to think about it since I switched from a 128gb phone to this 256gb. Yeah, gonna get an sd card. Thanks
Click to expand...
Click to collapse
Yeah once you get use to it, you'll demand it.
All my PCs and laptops are dual drive. It saves a lot of time, pain and boosts performance.
I can do a full reload on my Note 10+ in about 2 hrs and have it back to about 99% fully operational with no internet connection.
Without the card it becomes a gruelling 8+ hour process including having to load over 240 gb of data.
Backup everything now as once an Android OS starts exhibiting instability it's one boot away from a boot loop☠
They are very rare but that's how they start many times

Alright, I have just done one more thing: I completely disabled Nova Launcher (stopped using it anyways after I bought this N20U). If that doesn't help, I am proceeding with the reset.

vdamir78 said:
Alright, I have just done one more thing: I completely disabled Nova Launcher (stopped using it anyways after I bought this N20U). If that doesn't help, I am proceeding with the reset.
Click to expand...
Click to collapse
The Samsung launcher is better anyway, rock solid stable, fast with little battery usage.
Clear the system cache.
A 3rd party launcher can definitely crash a Samsung. One boot looped my Note 10+ twice, back to back over a year ago. I was seeing red.
Still running on the OS from that 2nd reset... still fast and stable less the 3rd party launcher

No essential app in deep sleeping apps.
Boot to safe mode and see if the problem persist, otherwise it's one of your apps responsible for this anomaly.
Copy entire internal drive data to SD card it flash drive via otg adapter
Use smart switch to backup Samsung notes.
Use swift backup or alpha backup app for contacts logs, messages and apps ( external data not saved fully on non-root devices)
Backup whatsapp on Google drive.
Afterwards, either flash factory firmware via odin to completely remove all traces of bugs ( recommended, use csc instead of home csc to wipe internal storage and all data)
Or factory reset from settings.
Then boot to recovery and wipe internal storage +factory reset again.. Its a bit extra but would eliminate any software related issues.
Report with update

blackhawk said:
The Samsung launcher is better anyway, rock solid stable, fast with little battery usage.
Clear the system cache.
A 3rd party launcher can definitely crash a Samsung. One boot looped my Note 10+ twice, back to back over a year ago. I was seeing red.
Still running on the OS from that 2nd reset... still fast and stable less the 3rd party launcher
Click to expand...
Click to collapse
I have seen this issue with good lock app on my note 4.. Uninstalling it caused system ui to crash repeatedly making phone unusable

vdamir78 said:
Alright, I have just done one more thing: I completely disabled Nova Launcher (stopped using it anyways after I bought this N20U). If that doesn't help, I am proceeding with the reset.
Click to expand...
Click to collapse
That's strange.
I have been rocking nova launcher since completing setup wizard. No issues so far.

fizzingbees said:
I have seen this issue with good lock app on my note 4.. Uninstalling it caused system ui to crash repeatedly making phone unusable
Click to expand...
Click to collapse
Wonder if it was the Lockstar module?
I never use any apps like that... once bitten, twice shy Other than it's goofy lame main page Good Lock gives me zero issues.
It wasn't Nova that boot looped the 2 OSs
It was slower and used more battery though then One UI... Samsung has made big improvements to their native launcher. The most customizable stock Android platform in existence too. It runs very well, uses very little power and is rock solid stable at least on my Note 10+/Pie variant. It has never crashed.

blackhawk said:
Wonder if it was the Lockstar module?
I never use any apps like that... once bitten, twice shy Other than it's goofy lame main page Good Lock gives me zero issues.
It wasn't Nova that boot looped the 2 OSs
It was slower and used more battery though then One UI... Samsung has made big improvements to their native launcher. The most customizable stock Android platform in existence too. It runs very well, uses very little power and is rock solid stable at least on my Note 10+/Pie variant. It has never crashed.
Click to expand...
Click to collapse
Actually it was 2017 version of Samsung good lock app that changed the lockscreen and quick panel.
Not like the modules now.

Update:
I decided to go for a samsung microsd, but I had to order a 256gb on ebay. So while I am waiting for it, I disabled good lock (nicelock to be precise) and I completely uninstalled Nova launcher.
No glitches since then.

Update:
After going back & forth with sd card purchase for my phone, I finally got a 256gb sd card that is the same size as my note20ultra's internal memory. So I was thinking, is it possible to completely mirror the phone's storage to sd card, and after I factory reset the phone, to copy that mirror back to the phone.
I used to do this with some PCs at my work a long time ago, using some sort of "ghost software"... so anyways, my sd card is capable to take every single data from the phone, what is my best backup/restore option to go for after a factory reset?
(Btw, the problem that I described in the opening post still persists, however it has become less frequent, like 50% less of a "hiccup" than it used to be)

vdamir78 said:
(Btw, the problem that I described in the opening post still persists, however it has become less frequent, like 50% less of a "hiccup" than it used to be)
Click to expand...
Click to collapse
Which OS and Samsung UI are installed on your N20U?
Are any applications listed in your Care report "Application history" in the Samsung Battery and device care section?
I had major "issues" with the System UI crashing after updating to Android 11/One UI 3.0 until the bugs were fixed with an update.
Surely hope you find a fix and do not have to factory reset your phone.

vdamir78 said:
Update:
After going back & forth with sd card purchase for my phone, I finally got a 256gb sd card that is the same size as my note20ultra's internal memory. So I was thinking, is it possible to completely mirror the phone's storage to sd card, and after I factory reset the phone, to copy that mirror back to the phone.
I used to do this with some PCs at my work a long time ago, using some sort of "ghost software"... so anyways, my sd card is capable to take every single data from the phone, what is my best backup/restore option to go for after a factory reset?
(Btw, the problem that I described in the opening post still persists, however it has become less frequent, like 50% less of a "hiccup" than it used to be)
Click to expand...
Click to collapse
I don't know of any app that can mirror Android drives real time. That not to say there isn't.
You would definitely take a performance hit if you could do it.
Like I said before the best solution is to use the SD card as the data drive. Just make sure to backup it up redundantly.
The lag your describing is bothersome. Track it down. It may be malware.
Clear system cache and do a hard reboot.
Do a network reset and clear the sim card tool kit data. Toggle Developer options off to clear it's settings... you can reenable then.
Disable all animations.
Is it still there?
Does it happen in safe mode?
If a 3rd party app is the cause either correct it or uninstall the app.
If you can't resolve the issue consider it malware and do a factory reset.
See if it's there after the reset before loading apps. If still present reflash the firmware.
If still present it may be a hardware issue.
This phone should be rocket fast with no lag.
There's near zero lag on my 10+ which has a slower memory and CPU.

blackhawk said:
I don't know of any app that can mirror Android drives real time. That not to say there isn't.
You would definitely take a performance hit if you could do it.
Like I said before the best solution is to use the SD card as the data drive. Just make sure to backup it up redundantly.
The lag your describing is bothersome. Track it down. It may be malware.
Clear system cache and do a hard reboot.
Do a network reset and clear the sim card tool kit data. Toggle Developer options off to clear it's settings... you can reenable then.
Disable all animations.
Is it still there?
Does it happen in safe mode?
If a 3rd party app is the cause either correct it or uninstall the app.
If you can't resolve the issue consider it malware and do a factory reset.
See if it's there after the reset before loading apps. If still present reflash the firmware.
If still present it may be a hardware issue.
This phone should be rocket fast with no lag.
There's near zero lag on my 10+ which has a slower memory and CPU.
Click to expand...
Click to collapse
The problem is that it is so random. I could not pinpoint any app to relate to it. I unistalled some apps in the meantime, but it still persists (less frequent). If I restarted in safe mode I would probably have to keep the phone in safe mode for at least 3 days to be sure.
Is there a malware detecting antivirus for android that works efficiently?

vdamir78 said:
The problem is that it is so random. I could not pinpoint any app to relate to it. I unistalled some apps in the meantime, but it still persists (less frequent). If I restarted in safe mode I would probably have to keep the phone in safe mode for at least 3 days to be sure.
Is there a malware detecting antivirus for android that works efficiently?
Click to expand...
Click to collapse
Reload time if the steps I mentioned don't work or if you did a major firmware upgrade without a factory reset.
Malwarebytes is good but there are always new undetectable infections floating around.
With odd behavior that cause can't be determined a virus or rootkit is a real possibility. They are very rare if you're careful but can happen.
I caught a trojan preloader on my 10+ about a year ago in the download folder with Malwarebytes. Fortunately I found/deleted it before it could download it's payload package and install it. It self downloaded through the Samsung browser... a nasty little bugger.

Malwareb. detected one malware app today, some photoediting app...deleted it, so let's see...

Related

[Q] Apps on SDcard go missing? usually??

Is anyone running into a problem with apps that have been moved to sdcard just disappearing? Most of the time I see little green droid icons all over my launcher (ADW), and lots of missing apps in the app drawer. I can reboot several times and eventually all show up.
I'm running ee4_debloated-v421 / 0730_charge_voodoo kernel / sdcard_patch. Am on my second handset (first one had a clicky button go dead). The earlier handset occasionally did the same thing.
I presume the sdcard is the culprit, as it is the common element. But I have popped it out, run fdisk and defrag all with no errors.
Any theories??
I had this happen when I first got my charge. How I fixed it was I took the SDCard out of my phone and put it into my flash media reader, and then did a full format using HP's Format tool with default device settings. It took a long time to do the full format, but after doing so, I didn't have any more issues with apps disappearing that were installed to the SDCard.
Full format, huh... (gulp) well it's certainly worth a try! I'll report back.
Thanks,
Larry
ljcorsa said:
Full format, huh... (gulp) well it's certainly worth a try! I'll report back.
Thanks,
Larry
Click to expand...
Click to collapse
I know when the phone first came out, there were several users with SDCard problems. I'm not sure how others fixed them, but a full format and a half hour or so fixed mine
Well, I'm disappointed to report that the problem did not disappear :-( Could it be the contents? I copied *everything* from the card before full formatting with the HP tool (which tooks hours as you said), then copied it all back. Same result... if I reboot enough times it will come up with all apps showing.
I've ordered a Class 10 card. Plan to use the HP tool on it straight away. What else would you recommend? Maybe move all the apps back to the phone? Would you start from a fresh load of the ROM?
Many thanks,
Larry
ljcorsa said:
Well, I'm disappointed to report that the problem did not disappear :-( Could it be the contents? I copied *everything* from the card before full formatting with the HP tool (which tooks hours as you said), then copied it all back. Same result... if I reboot enough times it will come up with all apps showing.
I've ordered a Class 10 card. Plan to use the HP tool on it straight away. What else would you recommend? Maybe move all the apps back to the phone? Would you start from a fresh load of the ROM?
Many thanks,
Larry
Click to expand...
Click to collapse
I know that DroidXcon over in the Android Central forums advises NOT to move apps over to the SDcard because of problems like you have experienced...the higher (class) speed card may help. I've noticed that on my stock class 2 card when I view a subdirectory that contains large wallpaper files using QuickPic or Gallery, the thumbnails will often "time out" and not display towards the end of the list unless I refresh the listing several times. I would assume it is for the same reason that recording video to the class 2 card will time out after a few minutes.
Good luck with the Class 10 card...keep us posted!!!
Well, the Class 10 arrived in time to try again, so formatted with HP Utility and copied all the saved files over. Same behavior.
If it's the sheer quantity of apps on the SD card and there is a timeout involved, that might explain it! Reformatting the card would effectively defrag it which would speed it up, perhaps explaining imnuts' observation. And if reading in all those apps at startup is not I/O bound but maybe CPU bound, that would explain my experience.
I'm going to try moving apps back to the phone just to see.
Wow, this is persistent. Moved all the apps from SD back to phone using TiB, which seemed to hang sometimes. Tried different access methods with no clear winner. Anyway, after a reboot, the situation was unchanged. Unreal.
So I am starting from scratch with a freshly-formatted Class10 card, a full data/cache wipe, and a new ROM: GummyChargedFE1.9.1. Haven't had a problem yet, but haven't restored anything to SD either. Proceeding cautiously.
Ok, I'm converted. GummyChargedFE1.9.1 solved this problem. Everything seems to run better. Added the V6 SuperCharger thing which tweaks minfree levels and much more, and the combination runs extremely well.
Biggest problem for me is that I'm satisfied... spent the last two years trying to get my "original" Droid to run well, then got the Charge, started over. What do I do for an encore?
Fast Boot option may be the culprit
In case anyone is following this old thread ...
I did not need to install a new ROM
CUT TO THE SOLUTION BELOW -- SEARCH FOR ////
Some (not all) of my apps moved to SD (all by Titanium Backup Pro) have begun to disappear and (sometimes) reappear without warning after I began to add and delete large Virtual Machines created in QEMU from my 16GB SanDisc class 10 microSD card on my HTC Droid Incredible running rooted stock Verizon Android Froyo 2.2.3. I know this thread is far from my phone's "home base", but from what I can tell this problem with disappearing apps located on an sdcard is NOT determined by hardware or even Android version.
I also happen to use LauncherPro by Federico Carnales instead of the built-in HTC Sense launcher. I noted elsewhere on XDA that a user had suggested that because at least some (maybe all) launchers start before the SD Card that this may be a problem, especially if changes are made to the sdcard that the launcher did not perform, or was not active during their performance by other apps such as Titanium Backup. That fits my situation, because I unmounted the SD, physically removed it to a PC, and added/deleted large VM files to save (lots) of time. No problems of this sort before I did this, so there must be some connection.
I noted that other users have tried reformatting SD, substituting different brands of SD, using newer/older SD etc. None of these reliably helped. So I skipped these options.
//// The (simple!) solution I tried that SEEMS to work (only time will tell!) is buried in the main Android Settings (accessed from the Menu button while in Home screen). Under "Applications" there is a setting "Fast Boot" that I checked long ago and forgot about (it seemed like a good thing to do at the time). The text warns "Turn off to use some Market apps" (that shows the age of my 2-yr old used phone and Android OS -- ohmygosh!-- because it refers to Market rather than Google Play Store!) Anyway, I unchecked the option and rebooted the phone.
Yes, it took a bit longer to boot (maybe a whole minute!), but after waiting about another minute ALL my home screen apps had normal icons and loaded properly. Titanium Backup Pro batch scenarios confirmed there were no apps in a forced uninstalled state (i.e. I had not done the deed, the system somehow had done it or at least rendered the apps "invisible" to Titanium, which decided they needed reinstallation).
The only odd behaviour was that auto brightness was turned off after I unchecked Fast Boot and rebooted. Going into Android Settings > Display and rechecking "auto brightness" took care of that. No other oddities or strange behaviours thus far (but it has only been about an hour).
I will report back here on this thread only (Samsung Fascinate > Fascinate Q&A > What just happend? apps on sdcard) if anything else requires reporting. Silence implies success!
link: http://forum.xda-developers.com/showthread.php?t=1873670
(I am copying this post to other relevant threads, but will not post anything further elsewhere -- only there. This is a bit arbitrary (although this thread appears to be the most recent active one on this topic), but I hope this approach pleases the XDA sysops/admins) :angel:

[Q] Transfered apps

Hi guys.
I'm having an issue on my XL.
This happens every time I transfer an app to internal(via settings->apps) or on SD(titanium backup, clean master).
After a reboot, it doesn't immediately show up in the app drawer. Eventually, after 6-10 seconds it does shows up at the end of the drawer.
Its very annoying...
Any help or suggestions REALLY appreciated
Notes: 4.2.2, BL Unlocked, rooted, tried re-flashing all stock FWs and pre-alpha CM but nothing worked :crying:
Also sorry if I missed something, its late and I'm starting to hear some wierd conversations in my head...
Brzi99 said:
Hi guys.
I'm having an issue on my XL.
This happens every time I transfer an app to internal(via settings->apps) or on SD(titanium backup, clean master).
After a reboot, it doesn't immediately show up in the app drawer. Eventually, after 6-10 seconds it does shows up at the end of the drawer.
Its very annoying...
Any help or suggestions REALLY appreciated
Notes: 4.2.2, BL Unlocked, rooted, tried re-flashing all stock FWs and pre-alpha CM but nothing worked :crying:
Also sorry if I missed something, its late and I'm starting to hear some wierd conversations in my head...
Click to expand...
Click to collapse
This is quite normal. You have sent a file/app to SD card and it is not immediately available when system loads. After system loads, it starts to read SD card and then you see your apps.
Even If you use a faster sdcard like class 10, you might see improvement but there will be always a delay.
Further, the more apps you have on your phone, the more time it will take to read your SD card.
How often you restart your phone ? I hardly restart it in months.
Hnk1 said:
This is quite normal. You have sent a file/app to SD card and it is not immediately available when system loads. After system loads, it starts to read SD card and then you see your apps.
Even If you use a faster sdcard like class 10, you might see improvement but there will be always a delay.
Further, the more apps you have on your phone, the more time it will take to read your SD card.
How often you restart your phone ? I hardly restart it in months.
Click to expand...
Click to collapse
Well I restart it quite often lately...
I'm aware that forcing transfer to SD is risky, but as I said, this doesn't happen only if I transfer an app to SD, but also to internal memory. And that didn't happen before.
For an example, I flash a generic ftf, turn on the phone, reboot and transfer Office Suite to interal memory.
Also, I use a class 10 Kingston 32 gb.
Brzi99 said:
Well I restart it quite often lately...
I'm aware that forcing transfer to SD is risky, but as I said, this doesn't happen only if I transfer an app to SD, but also to internal memory. And that didn't happen before.
For an example, I flash a generic ftf, turn on the phone, reboot and transfer Office Suite to interal memory.
Also, I use a class 10 Kingston 32 gb.
Click to expand...
Click to collapse
I am sorry to disappoint you but it has always been there for me when I had many apps/more than 50% full internal or SD memory in all phones I used EXCEPT Nexus devices. (It only has one memory. Not two or three )
The phone reads internal memory and SD card the same way, you can think of both as two SD cards. One which is removable and other not.
Try clearing dalvik cache. It might help but chances are slim.
Here what you do , restart your phone and do something else for a bit like a glass of water, or check what's in fridge to eat
Hnk1 said:
I am sorry to disappoint you but it has always been there for me when I had many apps/more than 50% full internal or SD memory in all phones I used EXCEPT Nexus devices. (It only has one memory. Not two or three )
The phone reads internal memory and SD card the same way, you can think of both as two SD cards. One which is removable and other not.
Try clearing dalvik cache. It might help but chances are slim.
Here what you do , restart your phone and do something else for a bit like a glass of water, or check what's in fridge to eat
Click to expand...
Click to collapse
Hahaha thanks for your adivce
Yeah, tried cleaning dalvik cache... surprise, surprise, it didn't work.
But hey, it's nothing fatal. All of my apps fit in phone memory.
Still, thanks for clearing it up for me.

Random Reboots (OG shield tablet)

Hi
Can't remember whether or not this has been asked and answered, but here goes...
Shield tablet
5.1.1
Non-root
For the past 2 months or so I've been plagued with random reboots ( up to 2-3 times a day)
I've tried to
wipe cache 2 times
delete a whole bunch of apps
Change power settings
I have NOT YET tried to do a full wipe, due to the fact that I've got waaaay to many apps that don't sync data with google so it would be a major hassle to fix settings, copy data out and so on.... But am looking at backup solutions that include DATA ( helium)
I haven't been able to ascertain pattern.
Any suggestions on what I can do , or for that mater any way to find out why the hell it restarts.
Thanks in advance!
D
That's strange. So just reboots, no shutdowns?
I can only assume, maybe a rogue app with reboot access.
Just reboots
And It seems totally random.... everywhere from 4 times a day to non... Load dosen't seem to matter . From netflix and web to plain and simple spotify. It's driving me up one wall and down the other... can't figure it out, and really don't want to factory reset
Any form for event viewer or something that I can take a look at?
Worst part is I use it to take work notes and on a few occasions it's died (rebooted) on me in the middle of notetaking... starting to really mess with things ... and yes I know, do a factory reset, and I will if I run out of options. But my fear is that after I reinstall all the apps I'm back to square one, and it all starts all over again.
Maybe hibernating all non stock apps with Greenify could solve the riddle; if it's indeed a software issue. Once the problem ceased, activate one app at a time till the reboot bug reoccurs..
Hi
Sry for the slow reply
Been testing the Greenify for about 2 days and the same is still happening. I've more or less put all non stuck apps into hibernating list.. and run it every so often, as well as activated the hibernate at screen off. And it still happens... wish there was an event log or something that could point me in the right direction.
That's too bad. What if it is malware? I'd say make a factory reset. Stay clear of non stock apps and watch and see. If it still reboots, it must be a hardware issue. You still have warranty, aye?
Nope warranty is out, I think. I mean 2 year but got it back in 2014 at some point.
A damn it, was hoping to id the damn offending app and fix it without having to factory reset....
No one knows of any event / log feature in android ( akin to event viewer in windows)...??
I just read on Amazon that someone had the same issue inconsistent reboots and the culprit was a micro SD card.
Do you have on inside your Shield?
I had this problem like 3 months ago. When tablet was charging the led indicator was blinking on green an orange. The problem was that the cable from battery was connected bad, I just had to connect it with solder. (My tablet is replaced )
Niii4 said:
I just read on Amazon that someone had the same issue inconsistent reboots and the culprit was a micro SD card.
Do you have on inside your Shield?
Click to expand...
Click to collapse
Yeah, I do have an NTFS formated sd card installed...
Do you know of any easy way to check...or even better fix it?
Replace the SD card with another one or don't use one for now. You can still backup via USB or WiFi.
It may be a incompatible issue or a damaged SD card.
Backup via usb? As in copy paste the content of the SD card?
I have a lot of apps on the SD card, and not enough space on local storage to move back to tablet ....
Was hoping for some software based diagnostic or test to check the sdcard
Yes, you can copy n paste. Or save new data on a new SD card etc.
I presume there are Android SD card checker apps. But I think that won't help if it's an incompatible issue. Anyway, unmounting the current SD card won't erase its data. It's the sour apple you've to try.
Just somehow experienced the same.
Android 7.0 - no root no anything.
It's weird. Now it rebooted with 1% and then died. Before it just rebooted around 40%. Anyone found a solution?
Thanks

Samsung Galaxy S7 Boot loop

Well, this is rather vexing.
I've been hard at work trying to backup / transfer data from my extremely old Samsung Galaxy S5 that seems to be coming to the end of it's useful lifespan. The S7 was next, but aside from running out of internal storage, I thought I still had time on that one (I wasn't experiencing a lot of slowdown or any crashes).
I went out for a couple hours (taking my newer phone), and when I came back, I saw my S7 on the insert the pin code screen. When I put the correct pin code in, the "unlocked padlock" stays on the screen for ages, before the phone restarts and I am shown the pin screen again (if I insert the wrong pin, it says so, so I am sure that I am not inserting the wrong pin).
So for the first time in my life, I am dealing with a spontaneous boot loop. This device has never been rooted, had a custom recovery installed or even the bootloader unlocked (it's the Exynos version, so presumably it would have been possible, but I decided that I wanted *one* unrooted device just in case, and given Knox, I decided that this was the device that will remain unmodded).
Anyway, that's for the story, but the question is, is there anything that I can try before the nuclear option (factory reset etc.).
Fortunately most of the photos are on the MicroSD. There are perhaps two or three apps that I would have liked to backup (they did not have a convenient built-in backup system) but I am just wondering if there is anything I might be able to do at this point? For instance, would wiping the cache be an option? Or is there anything I might be able to do with adb?
(Note: The device is running on Android 7)
Thanks.
Don't set security passwords for device access as you are the one most likely to be locked out.
If the boot loop wasn't caused by a hardware failure it's likely a app you loaded. Launchers and power management apps are prime candidates. Leave at least a couple gb of headroom on internal storage.
A factory reset is the easiest solution. Be careful what you load next time... take out the trash.
Use the SD card as a data drive, all critical data and everything you need for a reload goes here. No apps. Only apps, and the temporary download folder go on the internal memory.
The DCIM folder can be set to the SD card as well, but there can only be one DCIM folder and don't change its name. If a second backup folder is used on the SD card instead do not name it DCIM.
ApkExport can be used to make installable copies of apps for transfering them and added the data drive as well, no Playstore needed.
Do not use Kies or SmartSwitch when going between different type devices or OS versions. It can cause issues.
Cut/paste critical data, verify the data is readable and all there. Don't trust Kies or SmartSwitch with critical data.
Never clone data drives.
Never encrypt data drives.
Regularly redundantly backup the SD card data drive to at least 2 hdds that are physically and electronically isolated from each other and the PC.
Thanks for the reply.
1. No app was recently installed (past couple of weeks)
2. Hardware failure? Maybe, but it is rather out of the blue. Phone has not displayed any unusual behaviour, it hasn't been taken out of the house for a week or so (it is really in the process of getting retired). And I would like to ascertain it.
3. I am aware I can just nuke the whole thing with a factory reset, but before taking that easy option and effectively lose some data I'd like to retrieve if possible, I would like to other options.
And rather than tips on what I should've done or can do next time (much of which I am already doing), I am looking for advice on anything I might be able to try -before- nuking the whole thing.
For instance, could the log-files (there are quite a few of them) provide hint in what went wrong? Any option of re-installing the OS without wiping the data partition? Since I am on a fairly old version of Android I may also have the option of doing a minor update. That kind of things. I am thinking that there might also be the possibility that the system files somehow got corrupted and perhaps a re-install or system update might be worth trying.
I am basically looking for options that will not, for the time being erase the data partition. If it comes down to it in the end, then fine, but that is the last option not the first.
It sounds like it got spontaneously corrupted. Perhaps a flash memory cell failure. If so it may or may not be "self healing" with a factory reset or a reflash.
If you have ADB access you may be able to fix it.
Otherwise your options are limited to what's on the boot menu.
Try doing a hard reboot (simulates pulling battery).
If you try booting it a bunch of times it may go into go safe mode. I've seen that behavior in Android 9.
That's extent of my skills, sorry.
The reason why I posted how to prevent data lose is because sometimes that's all you can do.
Internal memory data I consider expendable, the SD card data... potentially expendable.

[SOLVED] Apps suddenly unable to access SD card for seemingly no reason

SOLVED
Found the thing!
This bug is caused by activating the option Disable permission monitoring in the Developper Options.
This is an option that is specific to a handful of phone manufacturers (Oppo in my case).
Enabling this option is needed for using some tweak apps such as Shizuku. However, if it is enabled on phone boot, SD card will be unaccessible.
FIX
Disabling this option and rebooting the phone fixed it.
If you still need to use this option, you can enable it while the phone is on and disable it before rebooting. It will work fine despite this minor inconvenience.
Click to expand...
Click to collapse
Solution answer
So this one is weird.
Everything was working fine untill I rebooted my phone earlier today.
For some reason, since this reboot, apps are unable to access my SD card storage. As far as I know, no update was applied with this reboot. I do not recall tinkering or changing anything related to this recently.
Symptoms
SD card is still visible in the storage tab of the settings (there is no available option to unmount or eject it) or in select cases when choosing a folder from an app, however the content does not show up past the root.
My music player (Oto music) sends an error message "Cannot play this file" while trying to play a song from the SD card
File explorer will not show the SD card directory at all
Resillio Sync has a synced folder on the SD card. It now says "Can't open the destination folder". If I try adding a new synced folder on the SD card and select the root of the SD card, I get the message "Android OS restricts access to this folder"
Google file is stuck in a loop trying to get permissions to access the card
SD card works just fine on another phone.
Other SD cards have the same problem with my phone, not just this one
SD card does not show up when using file transfer with a Windows PC
Rebooting the phone did nothing
Removing the card and putting it back in again did nothing
Formatting the card did nothing
I factory reset the phone. It worked, but the problem came back at the first reboot.
Current state of investigations I have reset the phone a second time and reboot it every time I install an app, uninstall or disable a system app or change some settings. So far the SD card is still accessible so I know what it's not:
it's not the fault of disabling system apps
it's not related to using a work profile (Insular)
still haven't found an app that causes it
Apps I have not tried re-installing on my second reset and that might be the curlprit:
Shizuku (I have my suspicions on this one, let me know if this one is known for causing similar bugs) Not Shizuku per se but a developper option needed for it (see solution answer)
I have no idea what could cause this, all I know is it's related to my phone in particular and it appeared out of nowhere.
I am using Android 13 on ColorOS.
Thanks to anyone who can help.
Format card in phone before using. Do Not share the card with other devices; upload/download to the card through the phone.
Hardware or firmware issue. Inspect phone sd card contacts.
blackhawk said:
Format card in phone before using. Do Not share the card with other devices; upload/download to the card through the phone.
Hardware or firmware issue. Inspect phone sd card contacts.
Click to expand...
Click to collapse
Thanks for answering.
I did format the card to no avail.
I did not use the card on other phones before it stopped working.
As I previously mentioned however, the card WAS working fine until now, and unless I am mistaken you seem to address the problem as if this is a new card or something. The card has been in this phone working fine for months.
It seems pretty clear to me this is a permissions issue so firmware perhaps indeed.
How would I go about checking the phone SD card contacts?
Iune said:
Thanks for answering.
I did format the card to no avail.
I did not use the card on other phones before it stopped working.
As I previously mentioned however, the card WAS working fine until now, and unless I am mistaken you seem to address the problem as if this is a new card or something. The card has been in this phone working fine for months.
It seems pretty clear to me this is a permissions issue so firmware perhaps indeed.
How would I go about checking the phone SD card contacts?
Click to expand...
Click to collapse
You're welcome.
If other cards don't work... regardless just stating things that can cause issues.
Light and magnification if needed to inspect the contacts. Use anhydrous isopropyl alcohol to clean if needed.
I sort of doubt it's firmware. Try a hard reboot and clear the system cache if possible.
blackhawk said:
You're welcome.
If other cards don't work... regardless just stating things that can cause issues.
Light and magnification if needed to inspect the contacts. Use anhydrous isopropyl alcohol to clean if needed.
I sort of doubt it's firmware. Try a hard reboot and clear the system cache if possible.
Click to expand...
Click to collapse
The reason I believe it is firmware is that when setting permissions the SD card IS shown in the list. For instance in my music player if I use the option to authorize access to the SD card it is here. It just does nothing when I authorize it.
I am leaning towards a permissions issue because when I use one of these permission windows to try and create a folder on the SD card, I get an error message that says "Android OS restricts write access to this folder". Hence the problem is not that the SD card is not detected, but that apps are somehow not allowed to use it.
I currently not have what it takes to check the contacts (neither the tools nor the knowledge). This phone is only a couple months old so I also doubt the contacts are damaged as they have been working fine until now and I had never removed the card or opened the tray since day one.
A hard reboot should be last resort, but anyway I did it. It worked and my SD card was accessible again, so I reinstalled all my stuff. But then at the first reboot the problem was back. I am now pretty sure this is a software issue as on my second phone reset, the SD card is still usable as long as I don't isntall the wrong thing (still trying to figure out what that is). I added my investigations to the main thread.
SOLVED
Found the thing!
This bug is caused by activating the option Disable permission monitoring in the Developper Options.
This is an option that is specific to a handful of phone manufacturers (Oppo in my case).
Enabling this option is needed for using some tweak apps such as Shizuku. However, if it is enabled on phone boot, SD card will be unaccessible.
FIX
Disabling this option and rebooting the phone fixed it.
If you still need to use this option, you can enable it while the phone is on and disable it before rebooting. It will work fine despite this minor inconvenience.
Iune said:
The reason I believe it is firmware is that when setting permissions the SD card IS shown in the list. For instance in my music player if I use the option to authorize access to the SD card it is here. It just does nothing when I authorize it.
I am leaning towards a permissions issue because when I use one of these permission windows to try and create a folder on the SD card, I get an error message that says "Android OS restricts write access to this folder". Hence the problem is not that the SD card is not detected, but that apps are somehow not allowed to use it.
I currently not have what it takes to check the contacts (neither the tools nor the knowledge). This phone is only a couple months old so I also doubt the contacts are damaged as they have been working fine until now and I had never removed the card or opened the tray since day one.
A hard reboot should be last resort, but anyway I did it. It worked and my SD card was accessible again, so I reinstalled all my stuff. But then at the first reboot the problem was back. I am now pretty sure this is a software issue as on my second phone reset, the SD card is still usable as long as I don't isntall the wrong thing (still trying to figure out what that is). I added my investigations to the main thread.
Click to expand...
Click to collapse
A hard reboot is not a factory reset! It simulates pulling the battery... It's always better to find the root cause of a problem than to factory reset because the problem is likely to reoccur
Sounds like a trashware 3rd party app is to blame... try in safe mode. If it fails to function in safe mode start uninstalling the 3rd party apps one by one until (if) the problem resolves to find the app that screwed up the hidden user settings*. If that fails to work, another factory reset and start over, being careful what you load, then rebooting and checking after each install.
Meh, you got a real can of worms to play with...
*poorly coded apps can alter hidden user settings and fail to revert these settings to default even after the offending app is uninstalled. Alternatively see if the behavior caused by the offending app can be corrected using the settings in that app.
ADB editing could maybe be used to correct to hidden user settings misconfiguration but finding that setting may prove difficult. Beyond anything I ever had to do.
blackhawk said:
A hard reboot is not a factory reset! It simulates pulling the battery... It's always better to find the root cause of a problem than to factory reset because the problem is likely to reoccur
Sounds like a trashware 3rd party app is to blame... try in safe mode. If it fails to function in safe mode start uninstalling the 3rd party apps one by one until (if) the problem resolves to find the app that screwed up the hidden user settings*. If that fails to work, another factory reset and start over, being careful what you load, then rebooting and checking after each install.
Meh, you got a real can of worms to play with...
*poorly coded apps can alter hidden user settings and fail to revert these settings to default even after the offending app is uninstalled. Alternatively see if the behavior caused by the offending app can be corrected using the settings in that app.
ADB editing could maybe be used to correct to hidden user settings misconfiguration but finding that setting may prove difficult. Beyond anything I ever had to do.
Click to expand...
Click to collapse
Well I searched on Google about hard reboots and the explanations literally described a factory reset haha. I have yet to understadn the difference. Wipe all data VS wipe all data ?
Anyway I investigated and found the cause of the problem, so marking this post as solved! Thanks for the help
Iune said:
Well I searched on Google about hard reboots and the explanations literally described a factory reset haha. I have yet to understadn the difference. Wipe all data VS wipe all data ?
Anyway I investigated and found the cause of the problem, so marking this post as solved! Thanks for the help
Click to expand...
Click to collapse
Yay! Well done. So many settings...
Traditionally a hard reboot is killing the power to the mobo... I believe, or maybe I just watched too many sci-fi movies You do it by holding the power button (or combination of buttons) down for 20-30 seconds.
On cams and older phones you simply remove the battery for a few seconds. It clears any volatile memory settings in the chipsets or semiconductors by cutting to power to everything.

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