Calculator; Unit And Currency Converter; Timer And Stopwatch - Zte E821 User Manual

Calculator

Your phone has a basic calculator for addition, subtraction,
multiplication and division. Select Tools > Calculator from the main
menu. Tap the onscreen keypad or use the hardware keyboard to
operate.
Note:
This calculator has limited accuracy. Rounding up or down errors may
occur - especially in long division.

Unit and Currency Converter

Select Tools > Converter from the main menu.
To convert currencies, tap Currency and enter the exchange rates
and one currency amount. The amount of the other currency will
appear automatically.
To convert units, select the type of unit (Area, Length, Weight or
Temperature). Tap on the unit button to select the unit you need.
Enter the quantity below one unit and the quantity in the other unit will
appear automatically.

Timer and Stopwatch

Select Tools > Stop Watch from the main menu to use the timer and
stopwatch.
Tap Timer/Stop Watch to switch between the two.
Tap Start to begin timing. You can pause the timing or reset it. Or tap
Minimize to put the timing screen into the background while you get
on with other things.
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