Training costs time on the front end, but it really saves a lot of time on the back end because you don't have 25 people asking questions later, one by one.
Other than underwear, a cell phone is the only thing that most people have with them on a 24-hour basis, no matter where they are. And it's used not just for talk, but to surf the Web.
You need to find a balance between minimizing the support costs and making your people happy and cooperative.