A "75 percent probability" exists that AT&T will hold onto the American iPhone during 2010, claims Credit Suisse analyst Jonathan Chaplin. The odds stem from a lack of "compelling" evidence that AT&T exclusivity ends this year, with an overlapping one-in-four chance that AT&T will bid and win a one-year contract extension. Rumors of a Verizon iPhone have accelerated in recent weeks, but have mostly been tied to a January 27th event which turned out to be the iPad debut.