Google has added a new feature to Google Voice, number porting, you can now port any existing mobile phone number to Google Voice, and it will cost $20 to transfer your number to Google Voice.
On top of the $20 fee you may also be charged a fee by your individual mobile carrier, so it may be worth checking out how much this fee is before you move your mobile number to Google Voice.
Today, we’re excited to announce that Number Porting is available for all existing Google Voice users. This means you can make the mobile number you’ve always used your Google Voice number, so it can ring any phone you want—or even your computer.
You can find out full details on how you move your mobile number to Google Voice over at the Google Blog.