One thing that's not mentioned here is familiarity. Sometimes it's easier to use your personal device simply because you know it. Every new device has a learning curve and we don't always have time to do the learning.
More and more, I'm hearing that people are using personal devices for business. There are a number of reasons. Some people prefer the iPhone over the company Blackberry. In another instance, I have a friend who quit using the company phone because the company was scrutinizing phone records to see if the company phone had any personal calls on it.
If one's personal smartphone is used for business, could it be subpoenaed should your company become a participant in a lawsuit? Could the entire contents of the smartphone, (and by extension, your entire personal account) become part of the lawsuit?
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.