Smartphones don't need to be headache for information technology professionals. In fact, they can be just as useful to them as end users. For example, check out the video here from TechRepublic's Michael Kassner. It offers an overview of five essential apps for IT pros with iPhones that Kassner thinks they should check out. These mobile applications include Network Utility Pro from Codepacity, Network Ping from MochaSoft, SNAP -from 9BitLabs, RDP Lite from MochaSoft and Telnet client from ThroughPut.