Database Users

Unable to decrypt samsung galaxy s4

Hi, I have an i9505 which I have rooted with the help of some of the guides on here.
Anyway, I encrypted my phone from settings -> security not really knowing what I was doing. I was just thinking that it would make my phone more secure or whatever.
Anyway, following this I now have to enter a password every time I lock my phone screen which I find very inconvenient and I understand that I can't install any custom roms in the future.
I have tried to decrypt the phone from settings -> security but the process doesn't seem to complete.
It says that the decrypting process is irreversible ect ect.. it will take one hour ect... ect.. then when I click to confirm it and begin the decryption process the phone just seems to switch off then it turns back on by itself within 30-60 seconds and that is it. The phone is still encrypted?
Can anyone help me please?
I am really gutted!!!
Thanks

I am experiencing the same problem right now, did you ever find a solution?

imstilly said:
Hi, I have an i9505 which I have rooted with the help of some of the guides on here.
Anyway, I encrypted my phone from settings -> security not really knowing what I was doing. I was just thinking that it would make my phone more secure or whatever.
Anyway, following this I now have to enter a password every time I lock my phone screen which I find very inconvenient and I understand that I can't install any custom roms in the future.
I have tried to decrypt the phone from settings -> security but the process doesn't seem to complete.
It says that the decrypting process is irreversible ect ect.. it will take one hour ect... ect.. then when I click to confirm it and begin the decryption process the phone just seems to switch off then it turns back on by itself within 30-60 seconds and that is it. The phone is still encrypted?
Can anyone help me please?
I am really gutted!!!
Thanks
Click to expand...
Click to collapse
Encryption is irreversible without a factory restore.
read here http://www.dummies.com/how-to/content/encrypt-your-samsung-galaxy-s-4.html
did you try to back to stock with odin?

samersh72 said:
Encryption is irreversible without a factory restore.
read here http://www.dummies.com/how-to/content/encrypt-your-samsung-galaxy-s-4.html
did you try to back to stock with odin?
Click to expand...
Click to collapse
I was keeping my hopes going because there is a "decrypt device" option in the security settings, but that wouldn't work and I was hoping I was ****ing it up somehow. Guess device cleansing is my only option.

Penetal said:
I was keeping my hopes going because there is a "decrypt device" option in the security settings, but that wouldn't work and I was hoping I was ****ing it up somehow. Guess device cleansing is my only option.
Click to expand...
Click to collapse
Samsung device have the "decrypt device" option and it works, tried it multiple times.

Decrypting a Samsung Galaxy S4
Had the same problem several times. Make sure "USB Debugging" is off in the "Developer Options" section of the Settings screen.

Dont fret....go to settings<lock screen and then change it to swipe....Hope this works!

imstilly said:
Hi, I have an i9505 which I have rooted with the help of some of the guides on here.
Anyway, I encrypted my phone from settings -> security not really knowing what I was doing. I was just thinking that it would make my phone more secure or whatever.
Anyway, following this I now have to enter a password every time I lock my phone screen which I find very inconvenient and I understand that I can't install any custom roms in the future.
I have tried to decrypt the phone from settings -> security but the process doesn't seem to complete.
It says that the decrypting process is irreversible ect ect.. it will take one hour ect... ect.. then when I click to confirm it and begin the decryption process the phone just seems to switch off then it turns back on by itself within 30-60 seconds and that is it. The phone is still encrypted?
Can anyone help me please?
I am really gutted!!!
Thanks
Click to expand...
Click to collapse
Last night i had the same problem but i managed to fix
If you press decode it says password and then enter a password of at least 6 digits AND AT LEAST 1 NUMBER to activate the decoding part i tottaly missed that but i realized it a few hours after.
And then it started decoding for about half an hour and it was fixed.
Hope this was usefull so you wont need a system reset.

Given that the original post was in 2013, the OP likely had to reset, if none of the other posts from 2013 in the thread helped.

4.1/2 years on - there must be someone out there that knows how to decrypt the GT-I9195 ??
I spent yesterday researching pro's & con's of encrypting my phone. Couldn't find anyone saying password had to be entered EVERY TIME I USE the phone, just people wrongly advising that I would have to enter password every time I switch the phone on. I could live with that, I thought, so I encrypted it. Big mistake. Why anyone wants a phone that needs a password on every use, I do not know.
Please help me decrypt my phone. Thanks

How to fix Clear credentials disabled/grayed out???

Hi,
I have a N910C Exynos (oem) on Lollipop and i´m tryning to wipe my credentials but in the Security options the "Clear credentials" option is disabled/grayed out. How can i turn this option on??
Explain and Things that i already tried:
Problem starts after i tried to root my galaxy. It was already in 5.1.1 (OTA installed) and when i tried to root i got a boot loop.
- I did the factory reset wiping cache and data/factory reset and still got on boot loop
- Tried to return to original condition installing by Odin the 4.4.4 stock version but got sw rev check fail .... 2 binary 1 on android screen and Fail status in Odin
- Tried to install 5.0.1 and same thing
- Installed 5.1.1 normal.
- After boot up, Clear credentials (as some other features, like lock screen) was already grayed out
- Tried to do a downgrade and Fail
- Tried to do the encrypt and decrypt the SD card, but same thing
- Tried to unlock screen with samsung find my phone, change to pattern mode, choose a pin code after pattern, reboot, put the wrong pattern on porpouse but it never ask for the pin so i could try to use google account to reset
- Tried to uncheck and check every admin
I tried pretty much everything that everyone write on this forum and internet. Nothing seems to work.
Is there any third part app to clear credentials or anyone has any idea how can i fix this F#[email protected]# problem??
Plz, Help

exlows said:
Hi,
I have a N910C Exynos (oem) on Lollipop and i´m tryning to wipe my credentials but in the Security options the "Clear credentials" option is disabled/grayed out. How can i turn this option on??
Explain and Things that i already tried:
Problem starts after i tried to root my galaxy. It was already in 5.1.1 (OTA installed) and when i tried to root i got a boot loop.
- I did the factory reset wiping cache and data/factory reset and still got on boot loop
- Tried to return to original condition installing by Odin the 4.4.4 stock version but got sw rev check fail .... 2 binary 1 on android screen and Fail status in Odin
- Tried to install 5.0.1 and same thing
- Installed 5.1.1 normal.
- After boot up, Clear credentials (as some other features, like lock screen) was already grayed out
- Tried to do a downgrade and Fail
- Tried to do the encrypt and decrypt the SD card, but same thing
- Tried to unlock screen with samsung find my phone, change to pattern mode, choose a pin code after pattern, reboot, put the wrong pattern on porpouse but it never ask for the pin so i could try to use google account to reset
- Tried to uncheck and check every admin
I tried pretty much everything that everyone write on this forum and internet. Nothing seems to work.
Is there any third part app to clear credentials or anyone has any idea how can i fix this F#[email protected]# problem??
Plz, Help
Click to expand...
Click to collapse
When the clear credential is grayed out means there aren't any credentials to wipe. Basically, what is your problem?

Jertlok said:
When the clear credential is grayed out means there aren't any credentials to wipe. Basically, what is your problem?
Click to expand...
Click to collapse
In Security section some options are grayed out with this status "disabled by administrator, encryption policy, or credential storage"
The Encrypt device option have only Pin and fingerprint on, the rest is disabled... I saw that if i clear the credentials it would fix this problem...

exlows said:
In Security section some options are grayed out with this status "disabled by administrator, encryption policy, or credential storage"
The Encrypt device option have only Pin and fingerprint on, the rest is disabled... I saw that if i clear the credentials it would fix this problem...
Click to expand...
Click to collapse
So, try to explain better your issue via posting some screenshot or writing more clearly.
Do you mean the Screen Lock Type?
-from Lock screen and security > Screen Lock Type
I think you previously encrypted your device and now you are having issues, have you tried to get access to your old files?

Jertlok said:
So, try to explain better your issue via posting some screenshot or writing more clearly.
Do you mean the Screen Lock Type?
-from Lock screen and security > Screen Lock Type
I think you previously encrypted your device and now you are having issues, have you tried to get access to your old files?
Click to expand...
Click to collapse
I´m new here, can´t post any links to my photos. Sorry if i´m not been clear, my english is not that good. I´m from Brazil. But i will try to explain more clearly here:
1 - I go to the Settings > System > Security
2 - In Security tab i choose Encrypt device (codificar dispositivo)
3 - Then i click to choose the lock screen option
4 - The 3 options are grayed out, just the PIN (senha) and Fingerprint (Impressão Digital) are enabled
I just got the phone. Brand new. Then i tried to root but got stock in boot loop, so i installed the stock rom and then i saw this problem.
I have never encrypted the phone nor the SD. I can access everything in my phone but this options. Knox are diabled to, since i tried to root and got Knox status 1.
The only way to highlight the 5 screen lock options is if i go to samsung find my phone, click in unlock screen device. Then the phone gets unlocked and i got a pop up to choose a new screen lock. But if i choose, for an example, Pattern, i draw the pattern, choose a pin code, but as soon i finish it all options get grayed again.
And in the lock screen i can draw the wrong pattern as many times as i want but i don´t got the option to use de PIN to get into device.

exlows said:
I´m new here, can´t post any links to my photos. Sorry if i´m not been clear, my english is not that good. I´m from Brazil. But i will try to explain more clearly here:
1 - I go to the Settings > System > Security
2 - In Security tab i choose Encrypt device (codificar dispositivo)
3 - Then i click to choose the lock screen option
4 - The 3 options are grayed out, just the PIN (senha) and Fingerprint (Impressão Digital) are enabled
I just got the phone. Brand new. Then i tried to root but got stock in boot loop, so i installed the stock rom and then i saw this problem.
I have never encrypted the phone nor the SD. I can access everything in my phone but this options. Knox are diabled to, since i tried to root and got Knox status 1.
The only way to highlight the 5 screen lock options is if i go to samsung find my phone, click in unlock screen device. Then the phone gets unlocked and i got a pop up to choose a new screen lock. But if i choose, for an example, Pattern, i draw the pattern, choose a pin code, but as soon i finish it all options get grayed again.
And in the lock screen i can draw the wrong pattern as many times as i want but i don´t got the option to use de PIN to get into device.
Click to expand...
Click to collapse
Oka, now i've got your problem. Try to check if all the Android Certificates are enabled. Settings > Security > Other Security Settings > View security certificates

Jertlok said:
Oka, now i've got your problem. Try to check if all the Android Certificates are enabled. Settings > Security > Other Security Settings > View security certificates
Click to expand...
Click to collapse
Ok, the path is a a little bit different for me. I´m in the Security -> Trusted Credentials... Here i can see 2 tabs: System and User
In system there ar a lot of credentials and they are all enabled, in user i have none.
Just a heads up: I already tried to disable all of them one by one before. Didn´t help

Did you ever get this figured out? I have tons of certificates installed and turned on. Some are from China, Turkey and in other languages. I want to remove them all but Clear Credentials is greyed out. I'm using a Samsung S5 on v6.0.1 (not rooted).
Joe
exlows said:
Ok, the path is a a little bit different for me. I´m in the Security -> Trusted Credentials... Here i can see 2 tabs: System and User
In system there ar a lot of credentials and they are all enabled, in user i have none.
Just a heads up: I already tried to disable all of them one by one before. Didn´t help
Click to expand...
Click to collapse

Am I crazy or did my device decrypt and is no longer encrypted after last update?

Hello all,
Although not clearly encrypted upon receipt of the device from VZW, I located the setting and encrypted the device.
After the last security update from Google/VZW I noticed that the option to encrypt/decrypt device is no longer present, and after rebooting my phone, I am no longer prompted to enter my PIN at boot. Note that I did have the setting as discussed/shown here and here after receiving the device.
The explicit feature I'm speaking of is discussed in this review:
Samsung now supports the PIN to decrypt on boot feature. It must be enabled manually in the lock screen and security settings area under “protect encrypted data.” Also, the S7 and S7 edge are full-disk encrypted by default, and cannot be decrypted.
Click to expand...
Click to collapse
These two things lead me to believe that the "whole-disk" encryption on the device has been removed completely or... is it just the PIN on boot feature? What does it all mean? What is the world coming to?
Am I just paranoid/silly and just forgot where the option was? Or is there a vast global network of government organizations trying to get my cat pictures?
Thanks,
Matt

branded said:
Hello all,
Although not clearly encrypted upon receipt of the device from VZW, I located the setting and encrypted the device.
After the last security update from Google/VZW I noticed that the option to encrypt/decrypt device is no longer present, and after rebooting my phone, I am no longer prompted to enter my PIN at boot.
Matt
Click to expand...
Click to collapse
One thing I can tell you for sure...based on a diff Samsung device: would WOULD KNOW if it got decrypted somehow as it factory defaults the phone.
Could be just different behavior regarding the PIN or even a bug.

Android 6.0 Marshmallow Full Disk Encryption on Huawei P8 Lite

Before I write a long article I have questions.
Let's say, I want to encrypt my phone. When I hit the button "Encrypt phone" a green Android figure shows up for less than a second and the phone restart the first time showing the Huawei logo for a minute or less. Then the phone restart a second time and asking for the password.
Until this is clear, however is strange because to fast the encryption.
I booting up the phone and go to settings where I change the password I used to encrypt the phone. Restart the phone. Then the phone booting up without asking my password before boot!
Is this normal?
I go again to settings and disable screen lock and set it to NONE. Restart the phone. The phone booting up without asking any password.
This is safe?
My phone is still encrypted?
How I can set up the phone to ask me the password before booting up?
My build number is: ALE-L21C432B574
There is any software to test that the phone is encrypted or not?

AndroidSecurity said:
Before I write a long article I have questions.
Click to expand...
Click to collapse
So far so good. At least better than flaming everyone for security issues that not everyone has...
AndroidSecurity said:
Let's say, I want to encrypt my phone. When I hit the button "Encrypt phone" a green Android figure shows up for less than a second and the phone restart the first time showing the Huawei logo for a minute or less. Then the phone restart a second time and asking for the password.
Until this is clear, however is strange because to fast the encryption.
Click to expand...
Click to collapse
You're right that is indeed strange... Have you tried contacting Huawei to figure out whether B574 has any issues with the dm-crypt in the kernel? I cant check this for you because Huawei hasn't released their Kernel for MM at all.. Usually the encryption process takes more than an hour. At least for me it took that long.
AndroidSecurity said:
I booting up the phone and go to settings where I change the password I used to encrypt the phone. Restart the phone. Then the phone booting up without asking my password before boot!
Is this normal?
Click to expand...
Click to collapse
"On Android 5.1 and above, encryption doesn’t require​ a PIN or password, but it’s highly recommended since not having one would reduce the effectiveness of the encryption." Are you sure you set it up correctly? And was your phone rooted while encrypting? If yes I can tell you it may cause major issues like data loss or weird **** happening.
AndroidSecurity said:
I go again to settings and disable screen lock and set it to NONE. Restart the phone. The phone booting up without asking any password.
This is safe?
Click to expand...
Click to collapse
No! Why on earth would no screen lock be safe??
AndroidSecurity said:
My phone is still encrypted?
Click to expand...
Click to collapse
Probably but since anyone can unlock it, it is basically useless.
AndroidSecurity said:
How I can set up the phone to ask me the password before booting up?
Click to expand...
Click to collapse
System Settings > Security > Screen Lock > Pin or Pattern or Whatever you got > Secure Start Up: Yes
That was easy wasn't​ it?
AndroidSecurity said:
There is any software to test that the phone is encrypted or not?
Click to expand...
Click to collapse
If you are unsure about encryption try to plug in your phone to your PC without unlocking it first. Can you read the Data? > Not encrypted.

Screen lock disable

Hello, i activated just for test screen lock pattern. Now i cant go back to none screen lock, the option is grey( Disabled by administrator, encryption policy or credential storage), i only can choose between pattern, pin code or password. I try all methods find on internet wich work for other phone ex samsung with android 6.0, no one works on huawei p8 lite android 6.0.
Any ideas?
Thank you!

Go to Settings-->Advanced-->Security-->Select Clear credentials and click Yes

I all ready did this, and multiple reboot, the option is still grey

Print screen

Is your phone encrypted?
Sent from my Huawei P8 using XDA Labs

No, is not encrypted, sould I try to encrypted, and decrypted, may be will work this way?

Try this
Go to Settings-->Advanced-->Security-->Device administrators and disable all of them
Sent from my Huawei P8 using XDA Labs

I try evrything I find on internet and is not working, there is anybody with the same problem with p8 lite?

Im also facing the same issue.. please post if you found some solution

Exact same issue here
I found a way to "cheat" it
Set code to pattern->get pattern wrong 5 times -> password now removed
Would like to see a permanent fix though
Or AOSP lockscreen lol

Thank you very much, is working for me, the option "none" is still grey, thank you again

I have android 6.0 and i face the same problem. Any fix yet?

huawei p8 lite, android 6, screen lock problem
I activated PIN screen lock for testing VPN, yesterday in the morning, and after that I was not able to remove it. The only thing that worked for me was setting pattern and backup PIN, and to make wrong pattern five times, as someone before suggested. Option none is still "grey" but at least I do not have any more screen lock of any kind. Thank you very much. :good:

your post saved me from going totally nuts!

Just to say thank you!
Munyareezus said:
Exact same issue here
I found a way to "cheat" it
Set code to pattern->get pattern wrong 5 times -> password now removed
Would like to see a permanent fix though
Or AOSP lockscreen lol
Click to expand...
Click to collapse
I've searched whole the net and found nothing. Your cheat worked, and I've just signed up in XDA to thank you. :victory::victory::victory:

After using a wrong pattern several times (it took well over 5), it says "Try again in 30 seconds". Grr…
It's a P8 Lite running Android 6.0 as the latest firmware (…B584).

1)opt for screenlock>back pin password
2)now try wrong pattern in screenlock till it comes for FORGET THE PASSWORD
3)now go for back up pin
4)now you will get an option to select screenlock.now also NONE optionwill be grey
5)don't opt anything that and press back
6)after this screen lock option becomes automatically NONE,even without any selection(go to settings and check it)

Munyareezus
your the bast ....worked with me to huawei y6 ii :good:
just registered in dxa

Munyareezus said:
Exact same issue here
I found a way to "cheat" it
Set code to pattern->get pattern wrong 5 times -> password now removed
Would like to see a permanent fix though
Or AOSP lockscreen lol
Click to expand...
Click to collapse
Works for me too! (P8 Lite)

Hi,
As most devices running Android 5.0 and newer are encrypted by default, this might be the cause that you are unable to remove the lockscreen protection. It uses a locally stored and randomly generated key until a lockscreen protection method is enabled, then switches to this as the encryption key.
If disabling the device managers and erasing the Certificates do not allow you to remove the lockscreen protection, there is an option under Developer options> Screen lock. Disabling this will remove any lockscreen protection that is in place. If this is also grayed out the only option is to perform a full factory reset of the device (including internal storage wipe) in order to reset the encryption key.
Cheers