Although many already know this, there are still those who do not know the function, because it is not as obvious as you might think.
When opening the application Calculator (native to the system), we usually have the device upright and see a simple calculator. However, when we turn the iPhone or iPod touch on its side, placing the screen in landscape (horizontal) mode, it activates several other more sophisticated calculation functions. For this, the vertical orientation of the system must not be blocked.
Did you know? ?
Remember that you can also delete numbers manually. ?