Device makers are hard at it trying to crack the market for mobile enterprise software applications. While BlackBerry devices put Research in Motion in a front-running position, enterprise users have an increasingly wide range of choices when it comes to high-end smartphones and mobile devices. Recent enhancements and lower prices continue to fuel buzz about Apple’s iPhone in the enterprise, but Nokia, Motorola and Sony Ericsson, as well as RIM, continue to develop closer ties with enterprise software vendors and telecom carriers.