Learn how to use the Calculator on your Samsung Galaxy S4. With this feature, you can use the phone as a calculator. The calculator provides the basic arithmetic functions; addition, subtraction, multiplication, and division. The Calculator also keeps a history of recent calculations.
From the Home screen, tap Apps > Calculator icon.
Enter the first number using the on-screen numeric keys.
Enter the operation for your calculation by tapping the corresponding on-screen arithmetic function key.
Enter the second number.
To view the result, tap equals (=).
To view calculator history, tap history icon located at the top of the calculator buttons. A history of your past calculations is displayed. Tap history like equal icon again to display the calculator keypad.
To clear the calculator history, press Menu key > Clear history.
To change the text size, press Menu key > Text size. Tap Small, Medium, or Large.
Turn your phone sideways to the landscape position to display the scientific calculator.