Where resources permit, have a dedicated PC for mobility users - replete with the necessary adapters and software. You'll need iTunes, and the iPhone configuration utility should you decide to utilise an enterprise configuration file for security reasons.
 
Mobility is now deemed part of the old "Desktop Support" environment which is gradually being renamed IT Support. I bring numerous phones or tablets on line each week, all of which have sizeable data plans enabled. Once the go ahead is given...