For what it's worth, I work in tech support, and far from cutting jobs, we're expanding to fill something like 150 more tech support positions just in the site I work at in the next couple of years.
So it really does depend on the industry; food service might be going down the tubes, for example (and this does have upsides; no one wants to man registers at Kroger at six in the morning, so self-checkout is convenient if I go to pick up lunch there before work), but cell phones aren't going away any time soon.