Puerto Rican mobile carrier Centennial is touting what it calls "the first vocal talent competition via the cellphone." The promotion, dubbed "Phonestar," calls for contestants to dial a code (*7827) on their Centennial phones and sing their favorite song, from a list of tracks provided by Sony BMG. The winner will get a single-song recording deal with Sony BMG.

A jury will pick ten semi-finalists on August 15, and from that point on, two contestants will be eliminated weekly until the announcement of the big winner in September.

The fate of the semi-finalists and the ultimate winner will be decided upon by the public, who can vote online or by text-messaging on their cellular phones.

The face of the contest is Sony BMG recording artist Kany Garcia, who appears in a TV spot touting the contest and who has been sponsored by Centennial since the launch of her recording career last year.

More information and ground rules can be found at the official contest site: phonestarpr.com.