Comparing plans, Verizon offers its unlimited one-phone plan for $75 a month ($25 more than Consumer Cellular), AT&T’s version of this plan is $65.99 a month ($15.99 more), and T-Mobile’s plan ...

In the most ideal class settings, mobile devices disappear into the background, like markers and whiteboards, pencil and paper – not because they’re not being used, but because they’re simply tools.