Sprint dials up Google Voice for all subscribers: A new deal between Sprint and Google imbues every cell phone in Sprint's service with Google Voice's powers.
Lets subscribers use their Sprint phone number as a Google Voice number to access the service's features. These include transcribed visual voice mail (manage voice messages as you would your e-mail), call forwarding (calls ring through on your cell phone, home phone, office phone, Gmail inbox, and so on), custom voice mail greetings, and competitive international calling rates.
To turn this on, look for your list of phones in your Google Voice account and look for a link next to your mobile number saying “Enable Google Voice on Your Sprint phone.”