![background image](http://html.mh-extra.com/html/samsung/sch-r640/sch-r640_user-manual_1190009150.webp)
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3.
Start the timer by tapping
Start
. The following options are
available:
•
Tap
Stop
to pause or end the count.
•
Tap
Restart
to resume the count.
•
Tap
Reset
to erase the current count.
•
Tap
OK
to silence the alert once the set time is expired.
Calculator
You can perform calculations, including addition, subtraction,
multiplication, and division using your phone.
1.
In Standby mode, tap
Menu
➔
Tools
➔
Calculator
. The
Calculator
keypad screen displays.
2.
Enter the first number in your calculation using the touch
screen keypad (numbers can be up to 15 digits long, with up to
10 of thos digits after a decimal point).
•
Tap
+/-
to toggle the sign of a number between positive and negative.
•
Tap
( )
before and after parts of the calculation you want to perform first
to “nest” calculations within a calculation.
3.
Tap the appropriate calculation operator (
/
,
X
,
-
,
+
) to set the
type of calculation you want to perform (division, multiplication,
subtraction, or addition).
4.
Enter the next number in your calculation using the touch
screen keypad.
5.
Tap
=
to perform the calculation and view the result.