How to Use the Calculator on Your iPhone
Your iPhone’s calculator works just like a pocket calculator. You can find the iPhone’s calculator feature on your Home screen, by clicking the calculator icon.
Your handy iPhone calculator does just fine for adding, subtracting, multiplying, and dividing. Numbers and symbols (such as a C for clear, and M+ for memory) are large and easy to see.
But you might be thinking: This isn’t exactly the most advanced calculator I’ve ever used. And you’d be right. It can’t handle a sine or a square root, much less more advanced functions.
Fortunately, the math whizzes at Apple were thinking right along with you. To see what they came up with, rotate the iPhone. As if by sleight of hand, your simple calculator changes to a full-fledged scientific calculator capable of tackling dozens of complex functions. Both calculators are shown here.