AT&T and Research In Motion have announced the availability of the BlackBerry Pearl 8120 for business customers, a global handset with built-in Wi-Fi that combines business-grade communications and multimedia functionality in a small and stylish design. The new BlackBerry Pearl 8120 handset enables AT&T’s business customers to use the broadest domestic and international coverage area for wireless data services of any U.S. carrier. [Note: This is not Voice over IP like T-Mobile offers.]