OnePlus 3- Need some help

[Meowster]

So my sister just gave me her OnePlus 3. She gave it to me because she accidentally pressed the "Lost Device" option and now the phone is wiped and google locked. She cannot for the life of her remember the password to the account. And this basically renders the phone useless. All I want is for the phone to work again. And I have a question: Will installing a custom rom remove the lock? Like LineageOS? 

Any help is appreciated. Also, I'm a bit of a dummy when it comes to custom recoveries and ROMs, so please can someone also help me with that

And before any of you say it:  I am 100% responsible for any device damages that may occur during the process and/or making the phone bricked

[Digideath]

Try this and see if it helps.

Turn on the phone
Select the emergency call button
Dial the code *#812# and agree to the terms and conditions

This should move you to the main screen. From there do a factory reset. That should wipe the google account and get rid of the block.

Edit:

If that doesn't work then you can always go into recovery mode and wipe the phone from in there. But you shouldn't need to install a custom rom to bypass a google block. The phone just needs wiped.

[Meowster]

27 minutes ago, Digideath said:

Try this and see if it helps.

Turn on the phone
Select the emergency call button
Dial the code *#812# and agree to the terms and conditions

This should move you to the main screen. From there do a factory reset. That should wipe the google account and get rid of the block.

Edit:

If that doesn't work then you can always go into recovery mode and wipe the phone from in there. But you shouldn't need to install a custom rom to bypass a google block. The phone just needs wiped.

Thanks for that, I will try and let you know if it worked

[Tech101yt]

On 1/31/2021 at 10:29 PM, Digideath said:

Try this and see if it helps.

Turn on the phone
Select the emergency call button
Dial the code *#812# and agree to the terms and conditions

This should move you to the main screen. From there do a factory reset. That should wipe the google account and get rid of the block.

Edit:

If that doesn't work then you can always go into recovery mode and wipe the phone from in there. But you shouldn't need to install a custom rom to bypass a google block. The phone just needs wiped.

This works, at least on the OnePlus 5T. It's how i saved a 5T that was going to get thrown due to the previous owner forgetting the Google password.

[Meowster]

On 1/31/2021 at 10:29 PM, Digideath said:

Try this and see if it helps.

Turn on the phone
Select the emergency call button
Dial the code *#812# and agree to the terms and conditions

This should move you to the main screen. From there do a factory reset. That should wipe the google account and get rid of the block.

Edit:

If that doesn't work then you can always go into recovery mode and wipe the phone from in there. But you shouldn't need to install a custom rom to bypass a google block. The phone just needs wiped.

Well well, it didnt work sadly. Any other ideas maybe?