How do I ensure in do not disturb mode the clock alarm will be heard?

1. You will need to set priority interruptions, this can be done through settings menu. Select sound and notification and tap on interruptions
2. Or the short cut is via volume up or down. A pop up window appears tap on “Priority” and then the settings icon
3. In here you have Priority interruptions, if you select events and reminders you will receive your alarm at the time set
4. In addition you can receive designated calls or messages by activating them going to “Calls/message from” and managing your contacts list