Android Phone locks immediately after entering correct pattern - General Questions and Answers

Samsung Note 10, SM-970F
Magisk Rooted
Android 10, N970FXXS6DTK8
It's my GF's, and she uses a pattern unlock along with fingerprint. No new apps were installed or settings changed that she recalls.
Began as phone locking immediately after correct pattern was entered, but using fingerprint would unlock correctly.
With this immediate locking, the phone will by itself turn off the screen then turn it back on for two seconds as though the power button was pressed, then turns the screen off again.
When entering incorrect pattern, it says incorrect pattern and does nothing else.
She tried restarting the phone, which disabled the fingerprint unlock feature until the phone is successfully unlocked once.
Phone still locks immediately after entering correct pattern, and now she can't unlock it using fingerprint.
Now unable to unlock phone.
EDIT: If I repeatedly enter the correct pattern, after a random number of tries it will go to the 'starting phone' screen, but then will either restart by itself or sit there until I restart the phone. It really is random, once it took 7 tries, another time 20 tries. The phone doesn't show up on my windows PC as a mounted device during any of this.
USB debugging was not enabled, so I don't believe I can run any ADB commands. She didn't backup her phone and our focus is at least to get the photos off the camera, at which point doing a factory reset would be acceptable.
I've tried:
Entering a lot of bad patterns, trying to get to an option of unlocking with the google account associated with the phone, but the option never comes up.
Removing the phone case, only external item on the phone now is the stock screen protector.
Starting into recovery, clearing cache, repairing apps.
Starting into safe mode.
Booting in and out of root.
Letting the battery discharge completely to do a hard power cycle.
But no luck. The phone still locks immediately after entering the correct pattern. I haven't tried taking the phone's stock screen protector off, but will probably do that in case there is something wrong with the proximity sensor.
This is the international two SIM version of the Note 10, the only Note 10 variant which was rootable. I haven't worked on the phone for at least a year since it was rooted and setup.

SEU or a hardware failure. Either way when this happens your only option is to backdoor in. If it was a SEU after resetting you're good to go. If hardware it will likely reoccur... Even with a hardware failure many times nothing happens if no lock is set, you still have access. Setting a lock password introduces added failure modes.
SEU's are very rare but they do happen, randomly and just one bit of data is flipped. Interesting they cause no hardware damage. Higher altitudes elevate the risk as does exposure to man made high energy particles. That's one reason why spacecraft have 3 or more redundant computers. Apollo fights have logged half dozen or more SEU's per flight.
I never screen lock my N10+'s, double tap on/off. This is one reason why. Same with PC bios, no password is ever set. Once bitten, twice shy as the user is always the most likely person to get locked out... as I learned the hard way

@blackhawk, I hear you on getting burned with device security. And for any electronic device, secured or not, backups and redundancy are the only reliable difference between your device being useful and useless. It's been hard not to say any 'I told you so' about this, since I was telling her both to use a pin instead of pattern and to let me setup a regular backup. I don't know that a pin would have been different, but I think it would have since the fingerprint was working before the restart.
Do you have any resources you could point me to on how to backdoor into an android with a password/encryption? I know you can unlock a device using ADB, but I believe you need USB debugging enabled first and I don't know how to make that happen without first unlocking the phone.

mc_squirrel said:
@blackhawk, I hear you on getting burned with device security. And for any electronic device, secured or not, backups and redundancy are the only reliable difference between your device being useful and useless. It's been hard not to say any 'I told you so' about this, since I was telling her both to use a pin instead of pattern and to let me setup a regular backup. I don't know that a pin would have been different, but I think it would have since the fingerprint was working before the restart.
Do you have any resources you could point me to on how to backdoor into an android with a password/encryption? I know you can unlock a device using ADB, but I believe you need USB debugging enabled first and I don't know how to make that happen without first unlocking the phone.
Click to expand...
Click to collapse
Samsung repair can do it. A local shop or yourself, maybe. If there's an associated Samsung or Google account, start there. I never had to do that but the information isn't hard to find. The data will likely be lost though.
Meh, it's a very rude surprise.

Related

Annoying startup "problem"

When I turn on my device (TP) it ALWAYS asks me to align the screen and to config the calender and time, and also it asks me if I want to put a lock on it. (However the startup video does NOT show)
This is really annoying! Because I hade soft resetting or turning of the device, because I know I need to do that align and configs again!
I've hard reseted my device once, and before I hard resetted my phone, it wasn't like this! Is there a way to turn this of?
Just out of intrest, do you loose any data when you startup. Examples are other Windows settings, contacts, messages, history etc?
sorry, double post
Just to be clear, are you properly aligning the screen? I had to talk a geeky mate of mine through the process. He was briefly tapping the screen and the cursor wasn't moving around the screen as it should. I had to explain that you have to keep the stylus pressed gently on the screen over the little cross until it moves to the next position. Repeat at each position.
Sorry if I'm teaching you to suck eggs.
Uhmm, No I don't loose any data (settings or anything)
Also, yes I align the screen correctly I guess. I do it just as you tell me
But it's like, when you first got the phone, You first installed the WM (I don't) Then you align the screen (This I have to do) Then it asks you to tell it what time it is (This I also got to do every time i turn off and on my device) Then it asks if you want to have a code lock, you can skip or press next to make a lock (This I also have to do, And YES, I have tried to make a password and then just delete it afterwards) Then it tells you to type in PIN code (I also got to do this, but this is nothing I want removed hehe) Then lastly it auto configurated what network you use (For you guys ATT and sprint maybe, I got NetCom - Also this I do NOT have to do)
Please help me! hehe
Really annoying that I need to config this setting each time I restart my Cellphone
Has i always been this way? Have you not had the phone long?
It sounds like you didn't hard reset your phone after you either turned it on for the first time, or flashed a custom ROM.
I bet a hard reset will work, if not then it sounds like a hardware problem. Like back in the old days before WM5 if your battery died, thats it it would wipe. This is because the memory in the phone is volitile. Your phone might not be keeping the settings or supplying enough power.
Try a hard reset first, this usually solves most problems like this
marcd said:
Has i always been this way? Have you not had the phone long?
It sounds like you didn't hard reset your phone after you either turned it on for the first time, or flashed a custom ROM.
I bet a hard reset will work, if not then it sounds like a hardware problem. Like back in the old days before WM5 if your battery died, thats it it would wipe. This is because the memory in the phone is volitile. Your phone might not be keeping the settings or supplying enough power.
Try a hard reset first, this usually solves most problems like this
Click to expand...
Click to collapse
As said, I got this phone for christmas, I turned it on, and had to set it up, I did, and when I restarted the phone I did NOT have to set it ut again!
After 1 month I hard reseted it (Because of a bad program which ruined my dailpad) and now I have to set up the phone EACH TIME I turn it on!! (I do not have to install WM or config the Network)
OK, so I've Hard Reset my device again, works perfectly now!

Lock screen pattern changed on its own, possible bug

I unlocked my phone normally several times today using my pattern. Five minutes after I had unlocked it, I picked it back up and drew my pattern and it said it was incorrect. I tried several more times with no change. I was able to unlock the phone using my fingerprint, but I have no idea how my pattern changed without my permission. If my phone dies or restarts for any reason, I will need the pattern to unlock it, as you can't use fingerprint on start up. (I've had the same unlock pattern since my last phone, so I'm sure I am putting it in correctly.)
Has anyone else encountered this bug? Is there any way to create a new pattern using my fingerprint? Finally, how should I go about reporting this to Samsung?
Thanks.
Yes!
Same thing happened to me... S7 working great for first few days when suddenly it didn't accept my unlock pattern. I've been using the same pattern for awhile and unlocked the phone a few times that morning. After a few reboots it finally accepted my pattern again. Immediately disabled it and now using pin instead.
stevecr25 said:
Yes!
Same thing happened to me... S7 working great for first few days when suddenly it didn't accept my unlock pattern. I've been using the same pattern for awhile and unlocked the phone a few times that morning. After a few reboots it finally accepted my pattern again. Immediately disabled it and now using pin instead.
Click to expand...
Click to collapse
Did you just restart again and again until it worked? If it worked for you I might try it instead of the factory reset.
I've had lock screen issues with my LG V10, but not quite like yours. I use a pattern, not a password or fingerprint. Sometimes the screen is locked and I fail the pattern and the phone gets unlocked anyway. Usually, this is associated with having first touched a notification with the screen locked. What happens after the pattern fails (trace shows in red), is that the screen appears as it does when it's not locked and I just swipe and I'm in the application whose notification I touched. The LG V10 has a fingerprint reader on the power button, but I haven't programmed it since I heard it's not that great. This is a major security issue in my opinion, and I haven't read any other posts anywhere about it. So I don't know if it's specific to LG, the V10 or Marshmallow (it started with Marshmallow).
I can start a new thread if you believe our lock screen problems are unrelated (enough). Just let me know.
Bruce
Same thing happened to me. I'm THE ONLY one to ever use my phone and I went to open it and it was saying my pattern was invalid. I was able to use the thumb print pattern still though. However when I went to change the pattern in my settings I entered what used to be my pattern and it locked me out of my phone for an hour. I don't know how to change it.
bluefire2128 said:
Same thing happened to me. I'm THE ONLY one to ever use my phone and I went to open it and it was saying my pattern was invalid. I was able to use the thumb print pattern still though. However when I went to change the pattern in my settings I entered what used to be my pattern and it locked me out of my phone for an hour. I don't know how to change it.
Click to expand...
Click to collapse
Saw you had the same issue, so wanted to let you know. I restarted the phone and the old pattern started working again. Another person with this issue said that they had to restart several times, but it did work. So I'd give that a try, worked for me. Good luck!
It just happed to me. I restarted it and it accepted my pattern. I now have it set with pin instead.
Had the same issue as well! Samsung Galaxy S7, suddenly stopped recognizing my screen unlock pattern. Same solution as well; Restarted my phone and the problem went away.
Is there a way to disable the pattern feature if you are able to navigate the phone? Got locked out of Marshmallow on my MOTO G 3rd gen. phone after a pattern change; I was surprisingly able to just reboot into an unlocked phone. I've turned on adb debug access while I still have the opportunity.
I just had that issue. I was able to unlock with the pin, and reset the pattern and it now works again but it was freaky.
Same happened here. This morning the lock pattern on my S7 edge is forgotten by the phone.. Reboot doesn't help.
have the same problem today. i didn't change my pattern and it happened again. before i was using a PIN and I ended up factory reset and by this time I wouldn't want to do the reset factory settings as the last option.
The pin was also randomly stop working, I have mine set to pin and it did the same thing.
Me too!!!! Wtf!!
Mine has locked as well and I swipe the wrong pattern until it gives me the option to put in the back up pin but when I go to correct the swipe it wont let me in. I have tried everything all of you have suggested except the factory reset, I just can't believe that Samsung hasn't put out a fix for this yet.
Here is how you fix it
Method 1. Use 'Find My Mobile' feature on Samsung Phone
All Samsung devices come with "Find My Mobile" feature. In order to bypass Samsung lock screen pattern, PIN, password and fingerprint, you can just follow the below steps to get it done.
• First of all, set up your Samsung account and log in.
• Click "Lock My Screen" button.
• Enter new PIN in the first field
• Click "Lock" button at the bottom
• Within few minutes, it will change lock screen password to the PIN so that you can unlock your device.
tell me it work ??
Just an update to help out someone who might be going through this. This recently happened to me on my s6 edge.
Like the above comment suggests, go to "Find My Mobile". Once signed in, select the "UNLOCK MY DEVICE" option , (selecting the "Lock My Screen" option does not allow you to change the lock screen type afterwards).
Selecting Unlock my device will immediately unlock the phone and erase any lock screen patterns, fingerprints or pins that you might not remember, thus allowing you to set them up again!
Hope this helps!!
---------- Post added at 08:38 PM ---------- Previous post was at 08:35 PM ----------
Also, one more thing. Doing the above ^ seemed to have solved a problem I was having with "Smart Lock" not working. So just as an FYI, going through that process might help you with that.
This just happend to my gf's s4 also she sent a text and then went to reply again a few moments later and her pin was invalid and it locked her out of her phone for 30 seconds, she just had to restart it once and it worked with the old pin again.
brobbeh said:
I just had that issue. I was able to unlock with the pin, and reset the pattern and it now works again but it was freaky.
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same issues here, pattern just stopped working. im positive im using the correct pattern.
i can login with my pin, but i cant reset the pattern as it keeps asking for the current pattern.
how can i reset the pattern or change to pin / fingerprint?
ive restartted 2x and trying a 3rd now....
> Use 'Find My Mobile' feature on Samsung Phone
No this didn't work. It still requires my pattern, and tells me I'm doing it wrong...
It DID let me into the phone, which was nice. But the pattern problem persists...
...Update: I restarted the phone, and it came up and accepted my pattern.
This just happened to me on my phone and my tablet. I wound up having to do a factory reset on both! Way to go Samsung. These are the last Samsung devices I'll ever buy.

[Question] Android randomly reboots, but doesn't ask for SIM pin code on reboot.

For the past few years I was starting to notice that every now and then my phone would just reboot for no reason. (Interval being like once or twice every 3 months, and no reason meaning no noticable reason (no software update, no freeze, no low memory, no extended use etc.)).
And this isn't even a normal reboot, because if I hold the power button and then reboot my phone, when it's done I am prompted to enter my SIM pin code, and then my device pin. However on these random reboots, the phone only asks for the device pin, never the sim.
When the random reboot happens, my phone vibrates as the screen fades to black, and soon after I see my service provider intro and the device and android specific intro, and then the phone asks for my device pin.
This was happening with my older phones, Xperia GO, Z3 Compact, and now it is also happening with XZ Premium. On the XZP, I have fingerprint detection on, however on boot I have set it to always ask for the PIN, and disregard FP detection on boot. That's why I know it rebooted, even if I don't notice it happening on the spot.
Anyone got an idea why this is happening? Always have latest available firmware installed (vanilla OTA android), and also latest app versions. (Also I don't usually shut down or reboot my phone, I leave it on "forever" most of the time and just charge it at night. Most recently I put it on charging and the phone rebooted when I plugged it in.)
What I want to know: why the reboots are happening, how to stop them, and how to force the system to ask for SIM pin when a random reboot happens (without it I lose an extra layer of security if this glitch happens).
1. First remove sim and look your problem solved or not?
2. If not I suggest you to flash your firmware
Sent from my SHV-E210S using Tapatalk

Disney Killed My S8+

It was hot. I don't think the phone was necessarily feeling the heat like me... but... the way it was acting... maybe so?
The second to last day of my vacation at Walt Disney World (first time!), my S8+ started acting wonky. I tried to take pictures and the application wouldn't work right.
So, I rebooted.
Now, I'm staring at a screen with a textbox at the bottom of the screen and some text near it (I don't recall it verbatim) "Enter your emergency password".
What? What's an emergency password? Typing in the textbox, it was obvious that it wasn't a numeric-only textbox (for PINs) but it was alpha-numeric. I simply don't recall registering anything but a pin and my fingerprints.
Freaking out, I kept trying to restart and worked with the power and volume buttons.
All I continued to see was the Samsung logo.
Suddenly, I got a black screen with text telling me things were being erased. I then see a blue screen with an android bot telling me stuff was being erased.
After a bit, I was back at the language selection.
Gone. Pictures. Data. SSD... entire phone... fully erased. (Thankfully, a majority of my pictures were immediately put into Instagram... the lost pictures I used the phone's camera app because it works better than the Instagram camera).
Don't have my laptop... so I don't have my password database, so I cannot get into ANY applications.
I know there are requirements for Microsoft Exchange, and other applications that require special security for being a device administrator... I'm not aware of Exchange requiring a password for the phone but... who knows? I didn't enter the password wrong too many times.... even as hot as it was I still used my print to unlock the phone.
Man, that is horrible. My condolences. If you can boot the phone into recovery mode (Hold down volume up, then the Bixby button & then the power button...all at once). Once in recovery, do a factory reset and you shouldn't have to enter that 'Emergency Password'. Unfortunately, everything is lost unless you ran a backup into the cloud or on your 'puter.
Sorry for the post if you've already reset the phone as it sounds like you might have since you mentioned the language screen.
TheBigEasy88 said:
Man, that is horrible. My condolences. If you can boot the phone into recovery mode (Hold down volume up, then the Bixby button & then the power button...all at once). Once in recovery, do a factory reset and you shouldn't have to enter that 'Emergency Password'. Unfortunately, everything is lost unless you ran a backup into the cloud or on your 'puter.
Sorry for the post if you've already reset the phone as it sounds like you might have since you mentioned the language screen.
Click to expand...
Click to collapse
Yeah I didn't have the choice -- the phone decided to reset to a fresh install point. Once I got back home I restored to a previous backup after trying everything I could to undelete stuff on my SDCARD.... but none of the software I tried would work... kudos Samsung... your deletion of my SDCARD was VERY complete...
Did you have the SDCard stand alone or merged with the internal storage? I'm surprised that got wiped also.
Chris Dickerson said:
It was hot. I don't think the phone was necessarily feeling the heat like me... but... the way it was acting... maybe so?
The second to last day of my vacation at Walt Disney World (first time!), my S8+ started acting wonky. I tried to take pictures and the application wouldn't work right.
So, I rebooted.
Now, I'm staring at a screen with a textbox at the bottom of the screen and some text near it (I don't recall it verbatim) "Enter your emergency password".
What? What's an emergency password? Typing in the textbox, it was obvious that it wasn't a numeric-only textbox (for PINs) but it was alpha-numeric. I simply don't recall registering anything but a pin and my fingerprints.
Freaking out, I kept trying to restart and worked with the power and volume buttons.
All I continued to see was the Samsung logo.
Suddenly, I got a black screen with text telling me things were being erased. I then see a blue screen with an android bot telling me stuff was being erased.
After a bit, I was back at the language selection.
Gone. Pictures. Data. SSD... entire phone... fully erased. (Thankfully, a majority of my pictures were immediately put into Instagram... the lost pictures I used the phone's camera app because it works better than the Instagram camera).
Don't have my laptop... so I don't have my password database, so I cannot get into ANY applications.
I know there are requirements for Microsoft Exchange, and other applications that require special security for being a device administrator... I'm not aware of Exchange requiring a password for the phone but... who knows? I didn't enter the password wrong too many times.... even as hot as it was I still used my print to unlock the phone.
Click to expand...
Click to collapse
The only reason I see for this to happen is if on the "lock Screen and Security", inside the "Secure Lock Settings" have enabled the "Auto factory reset".
Biometrics won't trigger a device wipe, they will only force the pin/password field on too many attempts.
You say Exchange. Is this a corporate account? Is there a possibility that someone remotely wiped your device? Log into OWA (the web interface of your Exchange), navigate to Options -> See All Options, then click the Phone tab and see if a wipe was sent to it. Because what you described sounds a lot like a remote wipe. (Though I've never seen the emergency password field.)
Also make sure that you're not violating your corporate policies. Granting admin access to the Exchange app gives your company full control over your device. They can see you accessing your email with it, and if you're doing something that you shouldn't be, they will wipe your device.
mcnascimento said:
The only reason I see for this to happen is if on the "lock Screen and Security", inside the "Secure Lock Settings" have enabled the "Auto factory reset".
Click to expand...
Click to collapse
No way of knowing but I don't recall ever setting that (I wouldn't).
something corrupted your ROM it sounds like, somehow!
if it was the red box that says like "enter password" I believe it is actually "default_password"

Pattern lock suddenly not recognized (bug)?

Samsung A21 keeps saying that I'm using the wrong pattern.
Steps taken to try and resolve:
Samsung account, find my mobile or whatever it's called. I was able to log in and see the location of the phone but when I tried to unlock, it said that remote unlock was not turned on, on the phone.
Google account: Said "notification sent" and that was it, nothing more.
Last thing I want but would do is a factory reset. Problem is, it asks for the pattern to shut down the phone.
Was going to pull the battery to shut it down, but the back is glued on and I don't want to damage the case even slightly. It's my mothers phone. If it was mine, I'd take the chance.
I'm at a freaking loss and can't believe this bug exists to this day.
Edit: I've set it to the download mode screen (the screen stays on and will drain the battery) and will let the battery die. I think, once dead, I should be able to plug in and quickly hold the buttons and get into recovery mode and reset it. Yes no maybe?
yes you can reset the phone
but you can not save the data

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