An interesting rumor has come out of Spanish site Xataka Android. Apparently, Google-branded SIM cards have been spotted and tested on the Nexus S The rumor suggests Google will look to either Pepephone or Simyo to help them become an actual carrier. On the photo below, you can see the carrier branding is “Google_Es”.
This is interesting, though methods do exist that allow users to change carrier branding themselves. We doubt Google Voice will translate into a Google-run carrier business, but the possibility does remain. For the time being, it’s still just a companion service to the cellular service you already have.