Useful apps and features
Stopwatch
On the Apps screen, tap Clock →Stopwatch.
Tap Start to time an event. Tap Lap to record lap times. Tap Stop to stop timing. To clear lap times, tap Reset.
To set the device to dim the screen during laps, tap 
→Settings →Keep screen dimmed.
Timer
On the Apps screen, tap Clock →Timer.
Set the duration, and then tap Start.
Drag 
outside the large circle when the timer goes off.
To change the alarm ringtone settings, tap 
→Settings.
Calculator
Use this app for simple or complex calculations. Tap Calculator on the Apps screen.
Rotate the device to landscape orientation to display the scientific calculator. If Screen rotation is disabled, tap 
→Scientific calculator.
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