Sorry to hear about your dad.
Carrying out a hard reset should get around the verification and make the phone work again.
Let me know if these are the steps you took:
If the phone still isn't responding, please let me know what error message you are getting on it.
Ok, let me check if the other experts have any ideas on this...
Hi there and welcome
While it is locked you cannot communicate correctly with the phone as its protecting the data.
But what exactly do you now see on the screen of the phone?
ok, there is no way to bypass it, not even Google themselves will do it.
It is there to protect the phone against theft
But why can you not enter in the details for it?
you are sorry, but have you tried to reset his password ***** all?
what happens when you do?