If you want to delete the Google account from a D2 either to sell your terminal, give it to a relative or friend, recycle it or if you have decided to switch to another Google account, you can do so by following the steps indicated continuation.
When delete the Google account from D2 we deactivate the FRP (Factory Reset Protection) of the operating system Android 8.1 Oreo, this is a protection that links the 10.or D2 to a Google account so that when it is rebooted or blocked due to loss or theft, ask for the Google account username and password.
To delete the Google account go to the settings of your 10.or, it is the icon of the gear wheel, we look for the section "Google" or "Accounts", the accounts linked to this 10.or D2 will appear, delete the desired account.
After you delete the account, you may want to reset the D2 to its factory state and thus eliminate all data from the 10.or, to do this from "Settings" click on "System", then "Reset settings", then "Factory data reset" and finally "Delete all".
This is the method for unlink Google account from 10.or D2 and erase all your data from the system settings.
Another more drastic method to erase the Google account in a 10.or D2 would be doing a hard reset or factory reset. It is a drastic method because in addition to deleting the Google account it resets the 10.or to its factory state and has to re-optimize all applications which takes more time than a simple deletion of Google account.
About the device:
10.or D2 is a device with a dimensions of 70.5 mm (millimeters)7.05 cm (centimeters)0.23 ft (feet)2.78 in (inches), and a screen resolution of 720 x 1440 pixels.
It has a processor ARM Cortex-A53, a RAM memory 2 GB (gigabytes and an internal memory of 16 GB (gigabytes), 32 GB (gigabytes).
The 10.or D2 it comes from the factory with the operating system Android 8.1 Oreo