No Alarm sound when volume is turned off.
Alarm has no sound when volume is turned off, only vibrates.
iPhone 6s Plus
Alarm has no sound when volume is turned off, only vibrates.
iPhone 6s Plus
How are you turning the volume down? If you engage the mute switch, the slider above the volume buttons, all systems sounds but the alarm will be silenced. If you put the phone on Do No Disturb, all system sounds but the alarm will be silenced. However, if you lower the volume but pressing the down volume button on the side of the phone or using the volume slider in the Control Center, you will silence the alarm.
No Alarm sound when volume is turned off.