Skeptical reader: If Google gives instructions on how to transfer your number from one account to another (and you even liked to those instructions earlier) why the heck are you explaining to me how to transfer my number?
Me: Trust! (and/or proximity)
The key to the transfer instructions is that Google requires you to be logged in to both accounts on the same computer, that is, both the account with the number and the account where you'd like the number. I like my friends but I'm not letting them log in to my account while they're logged in to theirs. And if we're not in the same room, then I'd have to share my password with them. That's not going to happen. So to keep my friend honest and to allow us to not have to be in the same room, do the following:
- Make a new GMail account with Google. This will be your "escrow" account.
- a) DON'T add two-factor authentication or recovery contact details (email, phone number) to this account. You just need a middleman.
- Transfer your Google Voice number from your account to this "escrow" account (following the instructions).
- Give the username and password of the "escrow" account to your friend.
- Now give your friend the instructions so he can transfer the number to his account.
Done! Friend-trust is still intact and now he has your old Google Voice number.