I can't see people being allowed to use a smartphone during an exam --- how can the invigilator know they are using the approved calculator app and not asking the internet for help?
I'm not tooting my own horn in saying I didn't participate - I'm no noble man, but one thing I will not do is cheat in college. I was, however, very disappointed to learn that apparently such cheating is rampant.
I did it on occasion, because sometimes there's such a ridiculous number of complex formulae that I'd rather spend my time practicing their use rather than memorizing them.
The students who bank their whole grade on the notes in the calculator... typically can't pass anyway, because they don't know how to use the formulae.