Donating Google Devices
Some Android devices can be a little bit more tricky than other devices for us to refurbish. We are unable to use Google devices that are locked, and thus require that the original owner sign out of their account before resetting their device to factory settings.
Please note that you must know your Google account password to log out.
To sign out of your Google device from the phone’s settings:
Open the Settings app from the app drawer.
Go to Accounts and select our Google Account which you want to logout.
Tap the Remove account button here to finally log out of your Google Account.
To sign out remotely from the Google dashboard:
Open a browser and go to myaccount.google.com.
Now put in your credentials for the Google account and login.
Go to the Security tab and look for Your devices section click on Manage devices.
Click on the three dots menu on the desired device and select Signout.
Confirm the selection and the account will be logout of that particular device.
More info: