Trying to blunt any possible migration of users to Verizon, AT&T has launched a new e-mail campaign to existing customers that reminds them that only on AT&T can the US iPhone handle voice and data simultaneously, TechCrunch reports. The e-mail also reminds readers that AT&T is the "fastest" mobile broadband network. The title of the message sums up the pitch: "Free free to make a call while reading this e-mail."
