Prevalence of need requires universality of provision
I'm not sure that whether or not a member of staff is "blue collar" is the determining factor in the provision of mobile infrastructure.
A workforce that has a high proportion of its staff in mobile roles, whether "blue collar" or not, should be making every effort to ensure all applications are accessible through well-constructed interfaces (web services, APIs, etc). This will enable applications to be constructed and delivered to a variety of mobile devices.
If there is a difference between mobile blue collar workers and mobile white collar workers, it is that white collar workers tend to be in positions that enable them to demand a degree of flexibility from the IT department in terms of the kit provided to them, and the functions available on that kit. I hate to say it, but I think companies tend to treat the blue collar workforce as more disposable - any increased tendency to walk because they don't like the device they use all day is not an issue since they can be replaced. This is not so much the case with a white collar worker threatening a company with reduced motivation.
There is more often a dictated hardware and software standard for blue collar workers for whom "line of business" applications are the crucial application on the device. There is likely to be only one user interface for that application, hence one device to run it on. For white collar workers, the phone & email functions tend to be more important and these can be delivered on a variety of devices meaning that user choice comes more strongly into play.