BenQ Z2 - Manual (Page 121)

Menus 105
Note
Note allows you to write down quick notes. You can set the phone code
(password) protection for the notes.
The default phone code is 1234. To change the phone code, go to the
menu Settings > Security > Phone Lock. See page 121.
Shortcuts
For information on the Shortcuts menu, see page 54, "Shortcuts Menu".
Calculator
1. Enter numbers using alphanumeric keys.
2. Use the Joystick to perform calculations. Push up to perform + (add);
push down to perform - (subtract); push right to perform / (divide);
push left to perform x (multiply); press down the Joystick button to
get the result (equal).
3. Press (Clear) to delete numbers and symbols entered. Press
to enter a decimal point.
Currency Converter
Currency converter allows you to convert currencies and set the
exchange rate.
1. To set the currencies for conversion, press (Option) and select
either Currency 1 (to set the currency at the top of the screen) or
Currency 2 (to set the currency at the bottom of the screen).