[Q] 4.1.2 --- video / image files, thumbnail and cache - Android Q&A, Help & Troubleshooting

Hi
I will be passing on my company phone for someone else to use for couple of weeks, and I am having some privacy concerns about it. I have already transferred all images/videos from the phone's ext SD card, but now I am worried of how I can securely erase the data. I don't wanna buy a new SD card just for this, so I was wondering if there is any way to safely erase/destroy those data.
For starters, I got my self 'secure file deletion' from play store, which allows to wipe off selected data off the phone memory and the external card. Which I did. Images/videos are stored under:
/storage/extSdCard/DCIM/Camera
But after wiping those off, I realised that not all image/video data is cleaned off. The OS also stores thumbnails for those media. Surprisingly, those are stored in phone memory and location can't be changed:
/storage/sdcard0/DCIM/.thumbnails
In there, there are .JPGs (thumbnails) and a strange '.thumbdataXXXX' file. So, I use 'secure file deletion' to remove those as well. Funny thing is that even after erasing those, I can still see the thumbnails of the corresponding video/image (but when I select it, it says 'file not found' - which is expected, because its already been wiped). Nevertheless, my guess is that the thumbnails of those videos/images are also cached elsewhere. But where?
My question is - is that all there is to it? Is the OS storing any more related data in regard to images/videos that I need to wipe? Are those actions I have taken enough to give me peace of mind that my media are safely wiped off beyond recovery?
I found that the secure deletion apps are very few, most of them require root and most even don't work properly (e.g. files reappearing after wipe etc). There are some good ones like 'ishredder 3 pro' and 'clean master' that offer secure wipe options - but only for wiping off entire phone/card memory - which is not what I want here. Any more suggestions?
The phone is a non-rooted Samsung with 4.1.2 Android OS on it. I don't wanna root the phone and I don't want to wipe entire ext card - so any suggestions, please bear that in mind.
Makes me wondering why there isn't any build-in function to the OS for secure deletion of files? Sure it would be slower and not everyone would applaud it, but it could be enabled on demand e.g. via Developer Options...
ta!

I have also noticed, that ever since I started using 'secure file deletion', when I connect via USB to copy files from the extSD to the PC, I get "device not connected" errors every few files I copy. Then, I have to use 'enable usb debugging' (from Dev Options) in order to get the device to show up again.
Any thoughts on my initial queries will be most appreciated. Someone must have noticed those issues. Perhaps they are not specific to 4.1.2 but maybe other versions of the OS...

jstoner said:
Funny thing is that even after erasing those, I can still see the thumbnails of the corresponding video/image (but when I select it, it says 'file not found' - which is expected, because its already been wiped)
Click to expand...
Click to collapse
Just another observation regarding this. If I go into File Manager and nagivate to "/storage/extSdCard/DCIM/Camera" and then go back to Gallery, then the thumbs of videos that are already deleted don't show up. That's a workaround for refreshing the cache (without having to do a full restart).
Anyone noticed those issues, or is it just me???

Related

[Q] Logsprovider, Twlauncher and others error looping: please how can I save data?

Hello, I'm Italian so my English is not very good.
Please I would like to ask you if somebody can help me with this problem.
I have a GT-i9100 with Andorid 2.3.3. The device is not rooted and I kept the original software from the day i bought the phone.
When I turn on my phone I have this error message looping:
"The application LogsProvider (com.sec.android.provider.LogsProvider process)has stopped unexpectedly. Please try again"
And, if I stay on the home screen, also:
"The application TwLauncher (com.sec.android.app.twlauncher process)has stopped unexpectedly. Please try again"
And occasionally I also get some others Force Closure, as:
Android process.media
Task Provider (process com. Android.providers)
Message (process com.android.mms)
IM (com.sec.android.im process)
AP Mobile (com.sec.android.widgetapp.apnews process)
Social Hub (com.seven.Z7 process)
Somebody told me that if I do a factory reset I'll probably solve the problem.
But this is what I am writing: since I am disable, sometimes I don't write by hand and I record voice recordings (with the standard voice recorder of the phone). I have some very important data on the phone and since they were recent I have no backup.
There are mainly voice recording (took with the standard recorder app) and some notes I took with an app called Note Everything that I would not like to lose.
Is there a way of saving this data?
UPDATE: Here a video of the problem:
Some additional information:
- the phone also display the icon of "memory almost full". So I can't install from the computer version of google play another launcher, because it would probably not install for no memory
- the phone also crashes after few minutes (sometimes soon, sometimes later)
- when I turn on again the phone, it is allways on the same home screen (I have 8 desktop home screen, it is always on the fifth)
- I have no SD card
- I could go on settings --> applications --> manage applications --> LogsProvider --> Clear data. The error of "LogsProvider" stops appearing, but if the phone crashes next time it returns, and if the phone does not chrash, if I go on home screen I still have all the others errors
- I could go on settings --> applications --> manage applications --> and I deleted some apps. When I turn off and on again the phone, the apps looks again there
- If i connect the phone with the computer with usb, Kies keeps telling "connecting"
- If I put the phone in Debug Mode, or in USB Mode, in My Computer I can see for some seconds the icon of the mass storage device (for example "K:"), but If I try to open it on my computer, I have an error like "the device is not ready", or the icon disappear
Thank you very very much in advance.
There are many apps to backup your data, try the below app to backup your apps data, you can later restore it after a factory reset.
https://play.google.com/store/apps/details?id=mobi.infolife.appbackup&feature=search_result
and regarding the voice recording. IF you simply record the voice and play it via any music explorer, then it would be saved in your internal sd and it will be safe after a factory reset.
+1 on bala.....well i had this prblm on my sgs1 and i dint do a backup but simply factory reset an for few weeks the phone was fine but again it started ..but then i flashd the same rom using odin an tht has a fix uptill now....cheerz
Thank bala_gamer and thanks rocky23, but unfortunately it looks like I can't install this app nor neither other app because of two reasons:
1) I can't access to the Google Play Store, because I don't have a desktop shortuit, and if I try to go passing through the apps page Twlauncher crashes and returns to the desktop
2) As I told in the post, phone says "memory almost full" so I can't install other apps
Any other ways of saving this data?
PS: As for the voice recording, good to know that with a factory reset they will probably be safe, thanks!
Since you're not rooted, I can't see any way you can fix this without losing your data.
My daughter is also limited to voice-only stuff, I rooted my SGS1 immediately before I gave it to her and back it up for her daily - not much use to you I know, but rooting/backups are a must, IMO.
She also uses Note Everything - as do I - and it always has survived a factory reset/full wipe for us, data's stored on the sd card, not in the system partition.
You've given all the info anyone could want, hope someone with more knowledge than me can think of a solution.
Good luck - I'll try and think more myself
Edit - not backed up via Google sync by any chance? If not, can you access it via Settings, or does TW crash on you every time?
Thanks also to you B3311.
I've checked with my fried who has the same phone and in fact all the voice recordings are stored in sdcard/audio. I've also found the directory of Note Everything inside sdcard. So, if this files will be kept, most of data that I care will be safe.
I have again some last few question, I give them a number so the post looks more clear.
1) As for Google sync, I have it enabled. On my computer I can see my calendar and my contacts, is there any other thing that Google sync backups?
2) So, apparently the only thing that I can now do is to do a "factory reset".
It is OK to go put the phone in Recovery Mode (Volume Up + Home + Power buttons ) and than select "factory reset"? Is the "factory reset" the same option that "wipe user data", or it is different?
As you can se It is the very first time I do a factory reset (and also that I enter in recovery mode), and I am a little bit worried that something goes wrong.
3) If all the data that is on /sdcard will be kept, so what kind of data I will lose? I suppose Contacts (1) , SMS (2), Calendar data (3), Apps (4) and Phone options (5) will be deleted, but is there any other type data that will be deleted?
Thank you everybody for your patience and your support dealing with this problem!!
please last question
Last question: in this tutorial (http://forum.xda-developers.com/showthread.php?t=1108499) concerning how to deal with a boot loop (which is not my case) it is said to make a "wipe user data" and than to flash a stock ROM.
Do you think that, in my case, make a factory reset would directly fix the problem, or I also have to flash?
Than you very much!
ftpftp said:
Last question: in this tutorial (http://forum.xda-developers.com/showthread.php?t=1108499) concerning how to deal with a boot loop (which is not my case) it is said to make a "wipe user data" and than to flash a stock ROM.
Do you think that, in my case, make a factory reset would directly fix the problem, or I also have to flash?
Than you very much!
Click to expand...
Click to collapse
Always worth a factory reset before other methods .
jje
JJEgan said:
Always worth a factory reset before other methods .
jje
Click to expand...
Click to collapse
Ok, thank you very much!
About my upper post, maybe you or someone can help me with my remaining my doubs?
I repost here the questions:
1) I have Google sync options enabled on my phone. On my computer I can see my calendar and my contacts, is there any other thing that Google sync backups?
2) So, apparently the only thing that I can now do is to do a "factory reset".
It is OK to go put the phone in Recovery Mode (Volume Up + Home + Power buttons ) and than select "factory reset"?
Is the "factory reset" the same option that "wipe user data", or it is different?
As you can see It is the very first time I do a factory reset (and also that I enter in recovery mode), and I am a little bit worried that something goes wrong.
3) If all the data that is on /sdcard will be kept, so what kind of data I will lose? I suppose Contacts (1) , SMS (2), Calendar data (3), Apps (4) and Desktops Phone options (5) will be deleted, but is there any other type data that will be deleted?
Thank you againt!
Very Short Video Explaining Everything!
Hello,
I've found out that when I choose reboot from the recovery mode, I get this error:
E: copy_kernel_file :: Can't open /data/log/recovery_kernel_log.txt
To explain you the problem I have with the phone, I made this very short video:
Having this error, is it safe to select wipe data/factory reset?
I summarize: I have some very important data on the phone, in particular some voice recording and some data took with the app Note Everything that I would really like to save.
What can you suggest me to do?
Thank you very much again.
ftpftp said:
Hello,
I've found out that when I choose reboot from the recovery mode, I get this error:
E: copy_kernel_file :: Can't open /data/log/recovery_kernel_log.txt
Having this error, is it safe to select wipe data/factory reset?
I summarize: I have some very important data on the phone, in particular some voice recording and some data took with the app Note Everything that I would really like to save.
What can you suggest me to do?
Thank you very much again.
Click to expand...
Click to collapse
hey pal since u said ur phone is not rooted and u have stock GB rom in ur phone why cant u back up via KIES software from ur PC and see also u can backup ur internal and external sdcard 2 ur pc and then try doing factory reset of ur phone
Sun90 said:
hey pal since u said ur phone is not rooted and u have stock GB rom in ur phone why cant u back up via KIES software from ur PC and see also u can backup ur internal and external sdcard 2 ur pc and then try doing factory reset of ur phone
Click to expand...
Click to collapse
Hi Sun90 and thanks. Unfortunately KIES keeps telling me "connecting" but does't connect.
You can find all the info in my first post, please see "Some additional information" here: http://forum.xda-developers.com/showpost.php?p=25577449&postcount=1
What can you suggest me to do to save data?
Having the kernel error, if I factory reset is it possible to have even a more serious problem?
Thanks.
Paul Spoerry said:
To resolve it: From your homescreen click menu, then Settings, Applications, Manage Applications. This screen will have tabs running across the top, click the ALL tab. Then scroll down to LogsProvider, select the app, then Force Stop and Clear Data. After that you should be good to go.
Click to expand...
Click to collapse
This is the solution.
You might not need to do a factory reset, I just cleared cache partition and it worked.
Explained here on StackExchange, I'm not allowed to post URLs yet:
android DOT stackexchange DOT com/questions/22961/how-to-fix-a-force-close-loop-on-android-with-phone-access

Internal Memory Gallery and Apps Data all Dissapear

Hi Guys,
I encounter a strange thing, yesterday my phone was very heat and decided to pull battery out manually (because i don know what things running behind) After restarting the phone, i found out that the internal memory of my photos, videos and the application data are all gone, the phone main screen is normal all the apps icon still there but some apps are not able to run smoothly and need re installed.
My question is:
1. I try to use data recovery software from pc (recuva, stella pheonix etc) but i cant find the photos and videos that i need to recover), at the same time, i try to use from phone apps (undelete, diskdigger). The results are the same i cant find and recover all the files is needed. Anyone know how to recover in other ways?
2. I saw my photo gallery has alot of thumbnail images which i cant open at all after this. I have deleted it, what causes it happen and the thumbnail cache file is more than 2gb, i not dare to delete and i was hoping my files are inside.
3. Is this problem happen due to memory corrupted? or some apps like antivirus caused ? i just install a antivirus call COMODO the day before it happen.
4. Anyone know how to recover internal memory through adb tool ?

[Q] bootloader unlock password- Huawei G630-U00

hello,
I couldn't find any other forum to discuss about this version of Huawei mobile phone. I really need help since the last legitimate EMU update ruined the whole system and now my new mobile phone that I have never had a chance to use it is like a trash device... I hope someone here can help me to recover it since i tried all ways I found on internet.
I bought this mobile from China and bring it to Europe. Since I wanted to remove some chinese default software (that wasn't basic software but really annoying), I used an app and rooted the mobile phone. so I removed some of chinese stuff and installed some of good software. Everything worked fine and I tested skype and I had high resolution picture with 8 Mega pixel camera. I tested all its functionality and it was really good...
I noticed that there is a new legitimate update for this OS, since I still didn't have any sd memory, I couldn't have a backup of this old system and this was a big mistake...
anyway... I let it do the legitimate update for EMU... but immediately after reboot, I noticed that Camera and bluetooth are out of functions... so I first thought the problem is with bluetooth configuration but I was wrong since the internal memory was read only and no longer available.
I formatted the internal memory via computer (the part which was available) but no luck... I bought a sd card and changed the storage from internal to external but this didn't help to function bluetooth and camera...
I had a back up from /system/apps and then removed manually the bluetooth.apk and also its odex file. then restarted the system, clear dev cache and tried to install bluetooth.apk again. but I received error message and couldnt' do that. so again I copied those file back to its location.
So bluetooth turns on now, can send signal but for receiving or sending file, it fails, It can also pairs with other device.. So I thought it should be something related to permissions. I again checked the bluetooth permissioin on /etc/permissions/platform.xml and notice they are ok.
I changed the permission of storage and added the external storage to the list and added group storage_rw.
but this also didn't solve the problem with camera and bluetooth.
several times reset to factory mode didn't solve the problem...
I tried to hack the bootloader but I could not unlock it... I sent all information to [email protected] and asked them to send me bootloader password and provide them with all detail information about the device and accepted that the device is out of warrant but I received no response...
I installed "safe system remover apps" and after having backup of Gallery2.apk, I uninstalled it (it is related to camera and all gallery information)... but with no luck I could install it again...
So, I am really hopeless now since I don't know whatelse I can to do... the system doesn't functioning and I need to load on it the custom ROM but the device only can go to fastboot and cannot load the recovery mode anymore and factory reset from the UI is only reset the mobile to fastboot without doing anything else.
I tried to run the factorymode.sh from the device but I receive error messages to access some files such as bluetooth parameters/power
I couldn't myself find this file on the directory that it looks for.
I would really appreciate it if you can tell me any way that I can unlock the bootloader from the device (because outside of the device I tried different applications but with no luck...)
I have a cutom ROM for G630-U20 (not exact version for this device but almost similar) and if I can have a bootloader password I can try this one or any other customized ROM.
I would appreciate any way that you can show me to solve the problem.... either by changing permissions to solve this problem.
Thank you.

I tried to encrypt a rooted Z2 (D6503), but it just reset my system

I clicked "encrypt", then I left it to work. But it must have done something else while I was away.
When I returned to it, it had a new standard installation, un-encrypted, un-rooted.
It asked me for a Google account and other first time setups, then it synced with a 4 day backup that must have been downloaded from my Google account, which installed all the apps that I had before, but none of their user data.
Because in the past I lacked enough free space on the internal disk, I must have moved app settings to the sdcard. Maybe this is why they weren't saved and restored automatically?
My main issue is that I lost all my Google Authenticator tokens, and on the sdcard I can't find this directory: /Android/data/com.google.android.apps.authenticator
I also tried installing on my Windows all kind of undelete tools for smartphones, but most of them fail to even see the internal storage when I connect the Z2 through USB. The one that worked great for the sdcard didn't find the directory that I was looking for.
Please help. What the hell happened? Do I have any chance of recovering my Google Authenticator tokens?

Phone lost access to internal storage

I have a ZTE Axon 7, running LineageOS 15.1 with TWRP recovery.
Today, my phone decided that it doesn't want to find my internal memory. If I open ES Explorer, it shows internal memory as 0.0 of 0.0. I can't access my photos through any media viewer. I can't access my downloads from my browser. I can't get to any of my files.
BUT, everything seems to work normally otherwise. My apps are still there, and they work. I can open the camera, and take a picture, but it doesn't save it. I can access the internet through my browser. I can check my email and get push notifications.
I rebooted my phone, put in my FDE password (fully expecting that it wouldn't work) and it booted right up. My text messages and call logs are all still there.
If I connect it to my computer via USB and change to MTP, my computer recognizes the phone, but Explorer says "This folder is empty".
It seems like some apps can see the data, but others can't. For example, I can see my text messages in NextSMS, but I can't back them up with SMS Backup and Restore.
Is there anything I can do short of wiping it and starting from scratch?
Edited to add followup questions: A) Could a factory reset work? B) If I have to reflash Lineage...how can I do that if I can't transfer anything to the device?

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