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How to remotely disassociate Gmail account from patterm LOCKED android ?

Here's the thing. For x reason my phone was confiscated in school. It had the simplest pattern lock in the world, yet the managed to mess it up. Now the phone is locked down and needs gmail login to sign in. Luckily they did not ask me to do it today because there was no wi fi in range, and they are still in possession of the phone. They only way to get inside the phone is through the gmail. I want to avoid this by any means.
I want to remotely disassociate my gmail account from the android device. That way the only way to unlock it will be through samsung service (this I will tell the school) ..I will tell them it got disassociated because it had been locked down for so long (2 days and counting, battery still has some juice left)
So, is there any way to do this ?

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Bump. Would appreciate a reply. Otherwise I just make a different google account and tell them THAT is my google account which is on the phone. Would work in the same way as a "disassociated google account" or perhaps even better (no chance of getting in)

...Nobody ? :/

Think I have a problem - cannot log in after resetting phone

Okay, starting from the beginning.
I bought a slightly used Nexus 6 in excellent shape. When it arrived, I was able to set it up once (with my account, a Google Apps for Business account using my own domain); I set it up temporarily wifi only, waiting to plug in the SIM. After setting it up, I got prompted to upgrade from 5.1.1 to Marshmallow, which I did.
I'm beginning to enjoy the phone, and I look at the Marshmallow version. MRA58K. So, I find that MR58R is out and I decide to upgrade, following the instructions to flash stock recovery. So far, so good. I begin the fastboot process, and it is writing all the files, when it reports it cannot flash the bootloader, it is locked. I missed this part of the step because I was distracted by other events going on in my house, and instead of rebooting the phone at this point to try and unlock the bootloader, I go into recovery mode and tell it to wipe the phone.
The phone wipes, and boots back up as if normal. That is, until I get to the spot where I need to sign in with my Google account. I try signing in with mine, and I can't - I'm told I need the owner account. Great. So I contact the seller, who is a decent enough guy, who trusts me enough to give me temporary access to his account, in the event that's the problem. I can't get in with his account either. Note for my account, I have not reset the password in a long time, and from what the phone seller told me, he has not with is either ( I'm aware of the 72 hour delay if you do).
The phone shows up as a device in my Google Apps for Business account, but I cannot contact it in any way from there. I've tried "fastboot oem unlock" from the SDK tools, but it fails. I can't get past the prompt asking me to log in. Any one who can offer some help here, I'd really appreciate it; if I can get in just once, I know I can fix anything else. I just don't know how.

Additional note - I did manage to remove the phone from the previous user's Android Device Manager, as I have the account credentials. This, however, has not resolved my issue.
I don't get it --I was able to register the phone with my account the first time I set it up. I'm not sure why it doesn't let me sign in with that account now. I had the phone operational for twelve hours before flashing, so I'd think the link between my Google account and it would be just fine.

I just spoke with Google Store support:
Apparently (according to them), regardless of whether you reset your Google account password or not, factory-resetting the phone means the 72-hour wait period until you can get back in begins unless you have removed your Google account from the phone (and/or with Android Device Manager) prior to the factory reset. This was contrary to my understanding of this only happening if you changed the password shortly before resetting the phone.
I guess I'll find out in about two and a half days; I'll update this thread then.

HELP Locked out of phone after leaving N Beta

A few weeks ago after Google I/O I decided to give the N Beta preview a try. I enrolled my phone and everything worked fine. However over the last week or so I've been getting a lot of app crashes and slowness that has been frustrating so I decided to roll back to Marshmallow and un-enrolled my Nexus 6 from the program. Immediately my phone started downloading the latest Marshmallow software update and after reading the warning that all data would be deleted from the phone I installed the update.
Once installed the phone activated the cellular service and the Welcome Screen appeared. I then connected the phone to wifi and was prompted to enter my Google account (email address) and password which it seems to accept but then I get a message that pops up that states "Please sign in using one of the owner's accounts for this device". and it bounces me back to the screen asking for my email address again.
I have 2 google accounts that I've used on this phone and neither seem to work. I have clicked on the "Need help finding your account?" link and answered the questions and I get a window pop up that states " Verify your number Google will send a one-time text message to confirm that (xxx)xxx-xxxx is yours." with the options to verify or try another way to sign in. Verify does nothing, since I can't get in the phone to check the text message they are trying to send and "try another way to sign in" sends me to g.co/recover which has a bunch of options for recovering a lost account but not how to fix this issue I'm having with the phone not recognizing my correct Google account.
So I am really sure where to go to get help to get back into my phone.? Any help or direction would be greatly appreciated. Thanks.

First things first - You may be tempted to try to change your google password - I'd suggest not doing that - if you do that, you'll not be able to sign in to your phone using that ID for 72 hours.
Now, do you have 2 factor authentication set up? Do you have backup codes printed? (if not, can you use your computer to get to your google account, and get a backup code? Use that).
If you only have the SMS option, move the SIM card to a different phone and get the one time code, and then, move the SIM back to your Nexus 6 and sign in with that.
Edit: weird that you are running into this issue - this would happen only if the Gmail ID you are signing in with now is different than the one you used when you signed in to the N preview, or earlier

jj14 said:
First things first - You may be tempted to try to change your google password - I'd suggest not doing that - if you do that, you'll not be able to sign in to your phone using that ID for 72 hours.
Now, do you have 2 factor authentication set up? Do you have backup codes printed? (if not, can you use your computer to get to your google account, and get a backup code? Use that).
If you only have the SMS option, move the SIM card to a different phone and get the one time code, and then, move the SIM back to your Nexus 6 and sign in with that.
Edit: weird that you are running into this issue - this would happen only if the Gmail ID you are signing in with now is different than the one you used when you signed in to the N preview, or earlier
Click to expand...
Click to collapse
I'm using the same google account to try to sign in to the phone now as I used with the N preview, so I really don't understand why it's such an issue.
Unfortunately I think I screwed myself up. Initially I thought that my password was wrong (I wasn't paying attention) and I did change it, so based on what you say I will have to wait until Sunday morning to do anything.
I do have 2 factor set up and can get into my Google account on my computers and my Nexus 7 but I don't think it's is helpful at this point since I did change the password. Additionally I don't have a 2nd phone to move my SIM card to.

Is there a way to reset a phone if you don't know the mi account password?

My dad wants to sell his mi 9
He doesn't remember the password he used when setting up the phone.
He apparently used an unknown email when setting it up, because if we ask for a reset link by email it says it isn't valid
If we try to reset by having a code texted to him, there is no code being received
This is super annoying to be able to unlock the phone but that not being enough of a security check to perform a reset

viper98 said:
My dad wants to sell his mi 9
He doesn't remember the password he used when setting up the phone.
He apparently used an unknown email when setting it up, because if we ask for a reset link by email it says it isn't valid
If we try to reset by having a code texted to him, there is no code being received
This is super annoying to be able to unlock the phone but that not being enough of a security check to perform a reset
Click to expand...
Click to collapse
On the other hand, I would think that security is good if a random user is blocked from resetting the phone. For a user to not just forget the password but also to forget what email address was used when setting up the phone it takes quite a lot of forgetting! To allow anyone to reset the phone is in my mind a bad idea.
To be able to unlock the phone you need to use the Mi-account, but to be able to perform a reset you need to log on to the Google-account used when you initially set the phone up. Unlocking and resetting are two different things, the first handled by Xiaomi and the second is handled by Google.

gerhard_wa said:
On the other hand, I would think that security is good if a random user is blocked from resetting the phone. For a user to not just forget the password but also to forget what email address was used when setting up the phone it takes quite a lot of forgetting! To allow anyone to reset the phone is in my mind a bad idea.
To be able to unlock the phone you need to use the Mi-account, but to be able to perform a reset you need to log on to the Google-account used when you initially set the phone up. Unlocking and resetting are two different things, the first handled by Xiaomi and the second is handled by Google.
Click to expand...
Click to collapse
Nope, you can't reset the phone without the Xiaomi password. He knows the google account and password.
I dug around some more and was able to discover that there is no email associated with his xiaomi ID. It just has his phone number. But since it is refusing to send a text to that number with a verification code, I don't know where to go.

viper98 said:
Nope, you can't reset the phone without the Xiaomi password. He knows the google account and password.
I dug around some more and was able to discover that there is no email associated with his xiaomi ID. It just has his phone number. But since it is refusing to send a text to that number with a verification code, I don't know where to go.
Click to expand...
Click to collapse
The kind of reset that requires access to the Mi account is when you want to restore backup from Mi Cloud.
For factory reset you don’t need the Mi account, you just need access to the Google account used when the phone was last set up.

Forgotten Mi A2 lock screen password

Hello guys. My mother forgot it's Mi A2 lock screen code few days ago. We tried recovering it via google, but she also forgot her google account password, even though she recovered it with backup email. But we're still cannot recover the phone.
We have tried:
Mi account: She didn't log in on the phone. Now she's created it but obviusly useless.
Find my device on google: As the password was changed after losing acces to the phone, the session logged out on the phone. It still shows up on find my device but cannot find the device even though it is still connected to WI-FI an can receive SMS and also calls.
PC Suite: As we can't let the device connect the computer, it won't even show on PC suite
Have tried some free data recovery tools, as it's the most important thing for her (she has thousands of pics from trips she wouldn't like to loose), no luck.
So I dont know if we should focus on recovering the data, since after it I can hard reset the phone and -I guess- it would ask for the previous logged in gmail account which we have access to.
By the way, while entering wrongly the password, there's no "forgotten the password" hint or something.
That's disgusting, I don't know how there's no way to recover it since we have access to the logged-out but only account that device is linked to.
Thank you in advance, I'll keep looking up for solutions
EDIT: We've found out she had an old account linked to the phone too. We're currently logged in to findmydevice and it is actually logged in on the phone. But find my device will only let me send a notification to set up secure&ease but for further times. That's awkward