Interesting. Could you describe the procedure? I started at porting from Google to another (Callcentric) and didn't know how to provide the billing documentation they asked for. What do you ask people to provide?
There is no fee to port a number with Twilio, and once you port it in it is $1/month to hold onto the number. To port, you log into your Twilio account and visit the phone numbers tab and select "port number", or hit this URL
https://www.twilio.com/user/account/phone-numbers/porting
At this point, you fill out a form asking for the billing information and then we follow up with you to get authorization to transfer the number (usually just a signature). It usually takes about 10 business days to complete the port.
Thanks for the follow up. What do you accept as billing information for a Google Voice number? That's the part I got stuck on. Is this merely a formality? Is a screen shot of the account page acceptable? As a free service, they have never sent me a "bill".
