AT&T is teaming up with Wachovia and Sun trust to offer mobile banking services.

The offering allows AT&T wireless customers at the two banks to view account balances, transfer funds and pay bills from their mobile handsets.

AT&T worked with mobile banking services provider Firethorn Holdings as well as CheckFree Corp. to create the service.

“The ability to perform banking functions using a wireless handset is attractive for people who need to make financial decisions on the go — business travelers, college students and anyone who desires the flexibility that wireless delivers,” said Mark Collins, vice president of consumer data for AT&T wireless. “Value-added services such as mobile banking and payments to the mobile device are part of our ongoing strategy to enrich the customer experience.”

The application to enable the service will be preloaded on AT&T handsets later this year. It can also be downloaded on more than 30 current AT&T handsets.