ZTE F858 - Manual (Page 70)

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2.11 Other Facilities
Stopwatch
The phone has a built in stopwatch accessible through the Tools menu.
• Press
OK Key to start timing.
• Press
OK Key to stop timing. The screen will show the event
time.
• Press
OK Key to continue timing.
• Press
Right Select Key to reset.
Calculator
The phone provides a simple calculator accessible through the Tools menu
• Press 0~9 key to enter numbers, Decimal to enter the decimal
point.
• Press Up/Down/Left/Right key to choose +, –, Ч, ч.
• Press the Clear key to clear last digit and results.
• Press OK Key to Calculate. Press End key or Back to exit the
calculator.