Verykool R80 - Manual (Page 24)

time , there will display the inputted date.
Go to weekly view (Go to monthly view): Set the display mode of
calendar as weekly view chart/monthly view chart.
1.18.3 Tasks
This function is used for add and view task items.
1.18.4 Calculator
The calculator performs four operations as addition, subtraction,
multiplication and division. Enter calculator screen, you can input
numbers directly and press navigation key to switch the operation which
you need, then start calculation.
When the calculation of dividing 0 overflows, the result is larger than
999999999999 or less than -999999999999, the mobile phone will
display the wrong hint “E”.
1.18.5 Currency converter
In this function, if you input the rate and the amount of money in local,
you can get the result of the equivalence money of foreign.
1.18.6 Typical stopwatch
In typical stopwatch screen, you can select the split timing or lap timing
and view records that you have saved.
1.18.7 World clock
Enter world clock screen, active Options you can select the city by
press OK key.
1.18.8 Unit converter
Enter into Unit Converter you can select Weight or Length to converter.
In converter screen, select the unit then input the relative data, press
LSK, the result will be displayed automatically.
1.19STK
This function is provided by the network operator. According to the
services provided by the SIM card, there will be different options
appearing in this directory. The name and content of the menu are
based entirely on the services provided by the network operator. For
more information, please contact with the network operator.
Note:
This function depends on whether the network operator provides
this service and whether you have ordered this service.