Apps and features87Stopwatch1 Launch the Clock app and tap Stopwatch.2 Tap Start to time an event.To record lap times while timing an event, tap Lap.3 Tap Stop to stop timing.• To restart the timing, tap Resume.• To clear lap times, tap Reset.Timer1 Launch the Clock app and tap Timer.To add a frequently used timer, tap , set the duration and name, and then tap Add.2 Set the duration, and then tap Start.To open the keypad to enter the duration, tap the duration input field.3 Tap Dismiss when the timer goes off.CalculatorPerform simple or complex calculations.Launch the Calculator app.You can see the calculation history at the upper part of the screen.To clear the history, tap Clear history.To use the unit conversion tool, tap . You can convert various values, such as area, length,or temperature, into other units.