HTC One

Find "Clock"

Press the menu icon.

Find "Clock"

Press Clock.

Add alarm

Press ALARMS.

Add alarm

Press the add alarm icon.

Set time

Slide hours and minutes up or down to set the time.

Enter name

Press the field below "DESCRIPTION" and key in the required name.

Select your alarm tone

Press Alarm sound.

Select your alarm tone

Press the different alarm tones to listen to them.

Select your alarm tone

Once you've found an alarm tone you like, press APPLY.

Turn repeat on or off

Press Repeat.

Turn repeat on or off

Press the required days.

Turn repeat on or off

Press OK.

Turn vibration on or off

Press Vibrate to turn the function on or off.

Save the alarm

Press DONE.

Return to the home screen

Press the Home key several times to return to the home screen.