Question Default password? Also conundrum - Samsung Galaxy S21+

Hi XDA peoples. I come to you in times of great need, and to satisfy your curiosity.
Recently, my mother enabled biometrics on her discover banking app, specifically face ID. However, this enabled face unlock on the entire phone and, in doing so, set a password for the phone. Note, there was no password or any other authentication on this phone before - completely open device. Now she is completely locked out of the device due to the default security settings requiring a password every 4 hours. Remote unlock is disabled, so there is no hope of that working.
Now, my question is this: is there a password that the device would automatically apply if needed? And if so, does anybody know what it is?
Thanks.
Device is a T-mobile S21+, 8G RAM 128GB Storage.
I appreciate all help.

factory reset from recovery mode + unlock FRP with google account

Related

[Q] Android Encryption Problem

I have a phone that I use for corporate purposes so there is a password requirement for each wakescreen.
This is obviously absurd, so I used Xposed module to "nuke" the password. The coorporate app still thinks there's a password and I've never lost my phone, so that's good.
However one shortcoming of this is, if on the off chance I do lose my phone, using Prey, or Android Device manager, I cannot "lock" the phone, because the xposed module takes it out.
I'd like to do the full encryption, still keep the password "nuked", but somehow be able to reactivate the lock, or at the very least shutdown the phone remotely in case I do lose it, when it comes back on the password will be active.
I could perhaps use tasker to accomplish this, but it's a bit tricky.
TlL;dr
Password Lock must think it's on, but not. (so corporate app doesn't boot me out)
Phone must be able to be remotely locked - or turned off.
The Cerberus App, does exactly what is needed, including full wipe, reboot, etc.
https://www.cerberusapp.com/
Full device encryption on mobile devices is useless for several reasons:
https://security.stackexchange.com/...ny-advantages-to-android-full-disk-encryption

Lollipop - Enabled encryption. Not sure if it worked

Hey guys
I flashed the factory images last night effectively wiping my Nexus 5 and starting from scratch. I did not restore apps and settings either. After I manually installed a bunch of my apps back and changed around a few settings, I decided to enable encryption. However, I don't think it enabled properly.
First, I had not set a PIN lock on my phone yet at the time.
When I decided to enable encryption and go through the process, it didn't ask me to enter a PIN.
It seemingly completed encrypting the phone. When I go back to the security menu, it says "Encrypted".
However, I am not prompted to enter a PIN upon booting the phone (not talking about the lock screen PIN).
So, it seems like it didn't work but I'm not sure. Has anyone else enabled encryption yet?
and yes, I saw the performance degradation that comes with enabling encryption but I'd rather have the security.
definitely sounds like there's an issue there. Do you have a custom recovery? If so, you could boot into that, pull some data and see if it opens. If it does, yeah its not encrypted.
Not worth mentioning degradation. All encryption always has and always will have performance degradation. It's par for the course
That sounds like a good idea. If it's not encrypted, then I guess the only method is to wipe and reinstall again.
mattkroeder said:
That sounds like a good idea. If it's not encrypted, then I guess the only method is to wipe and reinstall again.
Click to expand...
Click to collapse
I think so. You can't reverse the encryption flag without a wipe I dont think
mattkroeder said:
Hey guys
I flashed the factory images last night effectively wiping my Nexus 5 and starting from scratch. I did not restore apps and settings either. After I manually installed a bunch of my apps back and changed around a few settings, I decided to enable encryption. However, I don't think it enabled properly.
First, I had not set a PIN lock on my phone yet at the time.
When I decided to enable encryption and go through the process, it didn't ask me to enter a PIN.
It seemingly completed encrypting the phone. When I go back to the security menu, it says "Encrypted".
However, I am not prompted to enter a PIN upon booting the phone (not talking about the lock screen PIN).
So, it seems like it didn't work but I'm not sure. Has anyone else enabled encryption yet?
and yes, I saw the performance degradation that comes with enabling encryption but I'd rather have the security.
Click to expand...
Click to collapse
Not sure, but i think it's designed to works just like that, the encryption key is not the PIN anymore but something (random?) that is stored somewhere on the phone.
that would protect the data in case someone tries to read it directly from the phone's memory, but useless if you don;t have a PIN/PASSWORD.
I avoided encryption before for exactly that reason (requiring a password to boot). If I lose the phone I want the person that found/stole it to be able to at least boot it. if the person is not a thief there's a contact number so they can call me to give it back. if he/she's a thief well, as long as it's on I can call it, track it, wipe it. even brick it.
by not being able to boot it, the chances of getting it back are 0 if the battery dies or is dead!
http://readwrite.com/2014/10/28/google-android-lollipop-encryption-issues
there isn't much info out there about it.
kenshin33 said:
Not sure, but i think it's designed to works just like that, the encryption key is not the PIN anymore but something (random?) that is stored somewhere on the phone.
that would protect the data in case someone tries to read it directly from the phone's memory, but useless if you don;t have a PIN/PASSWORD.
I avoided encryption before for exactly that reason (requiring a password to boot). If I lose the phone I want the person that found/stole it to be able to at least boot it. if the person is not a thief there's a contact number so they can call me to give it back. if he/she's a thief well, as long as it's on I can call it, track it, wipe it. even brick it.
by not being able to boot it, the chances of getting it back are 0 if the battery dies or is dead!
http://readwrite.com/2014/10/28/google-android-lollipop-encryption-issues
there isn't much info out there about it.
Click to expand...
Click to collapse
I went ahead and wiped the phone again. I reinstalled lollipop and made sure to enable a lockscreen PIN before I enabled encryption. It seems to have encrypted properly. It prompts me for my PIN at boot up now.
You make a good point about encryption making it more difficult for someone to get a hold of me if I lose the phone though.
Same problem here, with Nexus 5 and Android v5
My work Exchange server enforces a security policy to the phone which forces you to enable encryption. So I went ahead and did that, and the email app is still saying that encryption needs to be enabled. When I reboot the phone I never get prompted for a PIN to decrypt the device, yet in the settings screen it says it is encrypted.
I'm going to have to re-flash. Is it possible the issue is caused by leaving the bootloader unlocked? or is this is a bug?
EDIT: Update. Reflashed, but first thing I did was relock the bootloader and enable a security screenlock PIN, *then* encrypted the phone. Now it's prompting me for a PIN on boot and looks like it's worked. Hope the Exchange email policy stays happy this time, as it worked before for about a day before it complained about the lack of encryption
this worked for me also
I did what was stated below and it worked....
1. reflashed,
2. locked bootloader
3. created lock pin
4. encrypted, THEN
5. added MDM control (MAAS360) and exchange email.
It seems to work OK now.
Thanks!
JoyrexJ9 said:
Same problem here, with Nexus 5 and Android v5
My work Exchange server enforces a security policy to the phone which forces you to enable encryption. So I went ahead and did that, and the email app is still saying that encryption needs to be enabled. When I reboot the phone I never get prompted for a PIN to decrypt the device, yet in the settings screen it says it is encrypted.
I'm going to have to re-flash. Is it possible the issue is caused by leaving the bootloader unlocked? or is this is a bug?
EDIT: Update. Reflashed, but first thing I did was relock the bootloader and enable a security screenlock PIN, *then* encrypted the phone. Now it's prompting me for a PIN on boot and looks like it's worked. Hope the Exchange email policy stays happy this time, as it worked before for about a day before it complained about the lack of encryption
Click to expand...
Click to collapse
mattkroeder said:
Hey guys
I flashed the factory images last night effectively wiping my Nexus 5 and starting from scratch. I did not restore apps and settings either. After I manually installed a bunch of my apps back and changed around a few settings, I decided to enable encryption. However, I don't think it enabled properly.
First, I had not set a PIN lock on my phone yet at the time.
When I decided to enable encryption and go through the process, it didn't ask me to enter a PIN.
It seemingly completed encrypting the phone. When I go back to the security menu, it says "Encrypted".
However, I am not prompted to enter a PIN upon booting the phone (not talking about the lock screen PIN).
So, it seems like it didn't work but I'm not sure. Has anyone else enabled encryption yet?
and yes, I saw the performance degradation that comes with enabling encryption but I'd rather have the security.
Click to expand...
Click to collapse
If you set up a screen lock pin the phone will ask you then if you would like the PIN to be enabled or not at boot.
kenshin33 said:
Not sure, but i think it's designed to works just like that, the encryption key is not the PIN anymore but something (random?) that is stored somewhere on the phone.
that would protect the data in case someone tries to read it directly from the phone's memory, but useless if you don;t have a PIN/PASSWORD.
I avoided encryption before for exactly that reason (requiring a password to boot). If I lose the phone I want the person that found/stole it to be able to at least boot it. if the person is not a thief there's a contact number so they can call me to give it back. if he/she's a thief well, as long as it's on I can call it, track it, wipe it. even brick it.
by not being able to boot it, the chances of getting it back are 0 if the battery dies or is dead!
http://readwrite.com/2014/10/28/google-android-lollipop-encryption-issues
there isn't much info out there about it.
Click to expand...
Click to collapse
Sorry for OT, but how can you remotely brick your phone? Just curious in case I ever need to. Don't live in the best of neighborhoods. I can remote wipe, track, take pics. The normal lost/stolen stuff, but I haven't heard of remotely bricking a phone ever.
Nexus 5 still looking to be encrypted
Only a temp fix---Both my Nexus 7, and Nexus 5 just started asked to be encrypted again....
This is still a problem with Lollipop
thegasmaster said:
I did what was stated below and it worked....
1. reflashed,
2. locked bootloader
3. created lock pin
4. encrypted, THEN
5. added MDM control (MAAS360) and exchange email.
It seems to work OK now.
Thanks!
Click to expand...
Click to collapse
wipe efs partition (I do have a backup on my computer) and the phone is no longer a phone.
Just to be clear, you can enable encryption on Android 5.0, and it will not force you to lock the phone. (Like the PIN screen and boot lock). When you buy a Nexus 6/9 the data partition is encrypted but there's no lock set. The following is from this article;
First, the encryption doesn't help much if you haven't set a passcode. Ludwig said studies have shown that roughly have of users don't set passcodes on their devices, largely because they find it inconvenient to keep entering them dozens of times a day. Lollipop will still encrypt your data, but it will also automatically decrypt it in normal use. So if you don't have a passcode, much of your information will be available to anyone who picks up your phone.
Click to expand...
Click to collapse
So if you've enabled encryption, and gone through the process, you're phone data partition is encrypted. It's just not locked down until you use some kind of phone lock too. BTW, the article goes on to describe the limited usefulness of having an encrypted data partition and no phone lock;
Lollipop's encryption still offers some limited protection even under those circumstances—for instance, by protecting stored data against anyone who tries to read it directly from the phone's memory. That could shield user passwords and other sensitive data from attackers.
Click to expand...
Click to collapse
As to why Exchange policies don't see the phone as encrypted is probably due to another issue.
Setting PIN to be required at startup after encryption possible fix
I now have my Nexus 5 & 7 working with exchange on Lollipop using this-
1. Reflashed Lollipop
2. Let phone reinstall all my apps
3. Locked bootloader.
4. Set a screen lock PIN
5. Encrypt phone
6. Set screen lock PIN to be required on start up (this was missing before!)
7. Installed MDM control via Mass360-all policies look to be met, including encryption
8. Installed my exchange account via Gmail
//code.google.com/p/android/issues/detail?id=79342
Updated thread with solution
---
* It used to be that when I did a reboot or shutdown and restart, I would have to enter a password before the system fully started.
* But now the phone boots into the phone without putting in my password. I can reboot the phone and it will boot all the way to the Lock screen, and I can unlock the lock screen with my fingerprint or my backup password.
* I am concerned that somehow my device is either no longer encrypted or that there is some setting which has stored the boot password.
--
Solution :
For those of you who find they have this problem and have not solved it, I found a solution that works, related to a bug (feature?) in Accessibility.
Apologies if this was suggested further in the thread, and that I'm replying to an old post. But I recently had this problem and figured out a solution.
- Accessibility was enabled and for some reason this cached the boot password. So- when I removed the app (rights) and turned off accessibility, and changed (reset/reentered) the password in security settings... On next boot the phone correctly asked me for password.
YMMV.
subs said:
I posted this elsewhere... But I'm having the same problem. Any thoughts? I can post more details, but don't want to repost this everywhere that I see people having the same unresolved problem.
---
* It used to be that when I did a reboot or shutdown and restart, I would have to enter a password before the system fully started.
* But now the phone boots into the phone without putting in my password. I can reboot the phone and it will boot all the way to the Lock screen, and I can unlock the lock screen with my fingerprint or my backup password.
* I am concerned that somehow my device is either no longer encrypted or that there is some setting which has stored the boot password.
Click to expand...
Click to collapse
Hi, please try not to bump threads almost a year old. I realise that it might have taken you a while to actually reach this thread, but hear me out.
Opening a new thread is always better, since software versions, features and devices are most likely different, along with different device usage habits/users.
You say you're having "the same problem"... as.. who exactly? There's a bunch of different specific "issues" that relate to encryption. Be specific.
For instance, you mentioning fingerprint sensor leads me to presume that you are not using a Nexus 5.
Sent from my Nexus 10 using Tapatalk

Face Unlock and Fingerprint no longer available for unlocking phone

So my Dad uses a Galaxy Note 10 Plus. He works at a high level judiciary position i cant mention, so information stored on his phone are govt. classified stuffs. Security is very vital.
He is almost 70 , so memorising pins and password is not his thing.
Therefore he uses Face Unlock/Face ID feature and Fingerprint scanner for unlocking phone and securing his apps.
But this morning, for God knows what reason, his phone can ONLY by unlocked via GESTURE PATTERN.
The thing is, Dad never uses gesture pattern, he must have set it when he first recieved the phone from the govt. He doesnt recall the gesture anymore.
All the officials have been trying their luck with the gesture unlock to no avail.
He needs to recover his phone data fast.
Is there a way for him to unlock his phone using face ID, fingerprint, or even email authorisation or something like that??
As far as I know, after you've tried many times, you will get a messages "Forgot pattern" on the lower left corner of your lock screen. Touch Forgot pattern and enter Google Account info to clear the lock.
Just hope he can still remember the password for the google account!
Just keep on trying until the phone starts asking you for the account (mail) and it's password.
Use the account data (password) to unlock the phone.
It is possible that his employer has the phone under MDM (Mobile Device Management). That is very common on mobile devices that access secure information from an employer. It allows them to control settings on the phone. If so, they may be the ones that changed the settings and they also may be able to unlock the phone.

Pin locked; TWRP flashing not allowed in locked state; need to recover data

Hello - I have a rather unique situation and have been searching for possible solutions since last few days. I have forgotten my pin or potentially an update or my office apps have locked my phone. I have it connected using fastboot to my PC however I am not able to flash TWRP as it gives an error: Flashing not allowed in Lock State. Is there any way for me to back up the data before doing a reset? Is there any code which can be used to bruteforce different pin combinations in recovery mode / fastboot mode? Any help is greatly appreciated. I have the output of "fastboot getvar all" in case that can help you locate the partition to boot/erase. thanks a ton!
Oneplus8TPinFinder said:
Hello - I have a rather unique situation and have been searching for possible solutions since last few days. I have forgotten my pin or potentially an update or my office apps have locked my phone. I have it connected using fastboot to my PC however I am not able to flash TWRP as it gives an error: Flashing not allowed in Lock State. Is there any way for me to back up the data before doing a reset? Is there any code which can be used to bruteforce different pin combinations in recovery mode / fastboot mode? Any help is greatly appreciated. I have the output of "fastboot getvar all" in case that can help you locate the partition to boot/erase. thanks a ton!
Click to expand...
Click to collapse
In what way are you phone locked? I don't think there are anything you can do to save your data if you don't know your password/pin. TWRP wouldn't have helped in this case either.
Hi - thanks for your reply. My pin is not working and every pin trial is taking quite a bit of time. I am able to try pins quickly in recovery mode but trying all possible 4 digit combinations will take quite a bit of time. Alternatively, a brute force code to keep trying different pins would also be beneficial if you are aware of it.
Wont adb would have let me back up my phone data?
No way to bruteforce it that I am aware off.
your pin is needed to decrypt the encryption key that is used to decrypt data. So you can't access or backup any data without your pin. This is by design.
But cant the encryption key be overwritten using my biometrics which I have registered as well? Or something that manufacturer can do because there are tonnes of solutions for samsung and lg devices but am struggling to find something for oneplus..
Oneplus8TPinFinder said:
But cant the encryption key be overwritten using my biometrics which I have registered as well? Or something that manufacturer can do because there are tonnes of solutions for samsung and lg devices but am struggling to find something for oneplus..
Click to expand...
Click to collapse
Perhaps this is because OnePlus has properly secured their devices and Samsung/LG hasn't? Though I do contest that statement. By my knowledge all devices perform a data wipe when the bootloader is unlocked (aside from one OP device that had a flaw in this area IIRC).
Please view this from another perspective: if your device was stolen and you've PIN protected it, would you want the thief to be able to unlock it and view all your pictures/videos/documents/etc?
Timmmmaaahh! said:
Perhaps this is because OnePlus has properly secured their devices and Samsung/LG hasn't? Though I do contest that statement. By my knowledge all devices perform a data wipe when the bootloader is unlocked (aside from one OP device that had a flaw in this area IIRC).
Please view this from another perspective: if your device was stolen and you've PIN protected it, would you want the thief to be able to unlock it and view all your pictures/videos/documents/etc?
Click to expand...
Click to collapse
I agree but one pin cant and should not be the only way to unlock phone. In my particular case, I have now started to think that some of the app has messed up with the pin or an android update has messed up with the pin. I am quite surprised that a forgot pin / pattern option doesnt even come as if no one can forget pin. Is there a way to hack into my phone given I am logged into same gmail and other apps as I am logged into my new realme phone?
Oneplus8TPinFinder said:
I agree but one pin cant and should not be the only way to unlock phone. In my particular case, I have now started to think that some of the app has messed up with the pin or an android update has messed up with the pin. I am quite surprised that a forgot pin / pattern option doesnt even come as if no one can forget pin. Is there a way to hack into my phone given I am logged into same gmail and other apps as I am logged into my new realme phone?
Click to expand...
Click to collapse
First time I've heard of a failing PIN, let alone an app that would mess with it (which is absolutely impossible). Asking for a hack into your phone is asking for an illegal way to access your device, which crosses a boundary we will not get into on this platform. We tweak devices, we add functionality, we use exploits to alter the aesthetics of a device and we surely mess them up a lot but we will not support anything beyond our terms.
But! If there indeed is an issue with the OnePlus 8T PIN security, I hope people will report it here. AFAIK there is no such issue widely known.
I also hope it's a lesson in creating proper backups. I guess learning the hard way is the best way. I think we've all been there. I sure have!
you could reset it and enter email registered with that device they fix or email you code to fix

No option for Google Unlock after Factory Reset

Hi, I broke my phone and got a U11 from my girlfriend which she doesn't use anymore. Sadly she forgot the unlocking pattern. She still has access to her Google account and the phone appears their under her connected devices. As suggested on the support page of HTC I did a factory reset and wiped data and cache of the phone. However, after restarting I still get asked for the unlocking pattern and other then expected there is no option where I can unlock my phone using the Google account credentials.
So my question is: Why doesn't Google unlock option appear on my phone and how can I fix this?
The phone's bootloader is locked and debugging mode is deactivated.
Searching this forum I found this and this related threads, but they didn't solve my problem.
I tried out many youtube hacks in order to bypass the FRP but I always ended up at a point where an option used in the video wasn't available on my phone. I assume HTC patched a lot of these security bypasses.
I hope someone can help me make this phone usable again and thanks in advance!

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