Google Product Forums
Re: Leaving Sprint & switching phones - activate Google Voice now?
Jul 1, 2012 5:42 PM
Posted in group:
Google Voice Forum
Porting a Number to/from Google Voice :
Sprint _may_ port your Sprint number to Google Voice for free (at least they did so for our two Evo 4Gs).
The FAQ says they port for free for "Sprint-branded" phones, which probably doesn't include iPhones. But I can't be sure, maybe the FAQ pre-dates iPhones on Sprint?