How To Use Stopwatch - Samsung Galaxy S4 Active
Learn how to use stopwatch on your Samsung Galaxy S4 Active. You can use this option to measure intervals of time.
From the Home screen, tap Apps icon > Clock > Stopwatch.
Tap Start to start the stopwatch and tap Lap to mark a unit of time per lap.
Tap Stop to stop the stopwatch.
Tap Restart to continue or tap Reset to erase all times recorded.