Calculators and iPhones
If you want to use your smart phone as a calculator, I am ok with that. I will just have to trust that you won’t be searching online for answers and only using it as a calculator (of course, if I caught you searching for answers – that would be considered cheating – which is bad).
If you do have an iPhone, I can recommend an excellent calculator app: VCalc. Oh, and it’s free. Also, it includes a vector calculator. Win-win.