Maybe the phone is just to make the heist look more lively?

He's probably laughing at his PC while he makes people think the secret has something to do with the phone. It seems like a great prank.

引用自 Vergil：

if everything we tried doesnt work, then it obviously has something to do with a place and a time for everything, im guessing it has to do with 4-player positioning in the bank, and then the phone gets answered or something

Who knows. So many possibilities.

But this is even bigger!

Wow. Would Overkill really put such a huge and complicated thing in their game?

Interesting. I might want to help out tomorrow. On the safe house there is a sprayed text saying "answer the phone" btw :p