Tap the Home Button > the Apps icon > the Tools folder > Calculator .
Tap the number keys to enter numbers.
For simple calculations, tap the numbers and function (, , or ), then tap the Result button .
For more complex calculations, you can switch to the Scientific calculator. Simply rotate the phone sideways, or tap the Menu icon then tap Scientific calculator.
To view the calculation history, tap the Menu icon then tap Calculation history.
To use the calculator in the QSlide function, tap the Menu icon , then tap QSlide.
You can touch and hold the calculation field to copy its information to your Clip Tray.