Do alarms work on silent and Do Not Disturb?

The silent switch and Do Not Disturb do not silence Clock app alarms. If yours is silent, the cause is elsewhere.

• Ringer volume is separate from media volume, and the side buttons usually adjust media. Check Settings → Sounds & Haptics.
• A connected Bluetooth device can capture the audio. Disconnect and retest.
• A custom Focus mode, not standard Do Not Disturb, can behave differently. Test with all Focus modes off.

Android splits volume into separate streams, and the alarm stream is its own. Turning the ringer to silent does not touch it.

1. 1Press a volume key, tap the settings or three-dot icon, and check the Alarm slider specifically.
2. 2Open Settings → Sound → Do Not Disturb → Exceptions and confirm that Alarms are allowed.
3. 3Check that a third-party alarm app is using the alarm audio stream rather than the notification stream. Apps that post a notification instead of a real alarm inherit notification rules.

Set an alarm for two minutes from now, switch on silent and Do Not Disturb, lock the phone and put it face down. If it rings, silent mode is not your problem. This takes two minutes and settles the question permanently.

Roosta uses the system alarm path on both platforms, which is what makes it audible through silent mode and Do Not Disturb, and why it does not depend on notification permissions to wake you.

The silent switch on an iPhone, and the equivalent mode on Android, mute notifications, keyboard clicks, ringtones for incoming calls and most app sounds. Alarms are deliberately excluded from that list on both platforms. This is a design decision made by Apple and Google, not a setting either of them expects you to find, and it has been true for as long as both platforms have existed.

The reasoning is straightforward. Silent mode is something you turn on for a meeting or a cinema and forget about. If it also silenced alarms, a single forgotten switch would cost people flights and job interviews, and the failure would be invisible until the morning it happened.

What silent mode does not control is volume. An alarm that sounds through silent mode still plays at whatever the ringer volume is set to, and that is a separate control which can independently be at zero.

Do Not Disturb is one Focus among several on modern iOS, and alarms are designed to sound through all of them, including Sleep Focus. If anything, Sleep Focus expects an alarm: it is the mode you turn on precisely because you intend to be woken later.

There are two things in this area that genuinely do change behaviour, and neither is Do Not Disturb itself.

• A custom Focus you built yourself. Standard Focus modes leave alarms alone, but a heavily customised one with an unusual schedule has more moving parts, and it is worth testing with all Focus modes off before concluding the alarm is broken.
• The Sleep schedule’s own Wake Up alarm, which is a different alarm from the ones on the Alarm tab. It has its own sound, its own volume and its own on/off state, and people frequently edit one while relying on the other.

Android routes audio through separate streams, and alarms have their own. That is why Android exposes a distinct alarm volume slider alongside media and ring volume, and why turning the ringer down does not necessarily turn the alarm down.

Do Not Disturb on Android has an explicit exception list, and alarms are permitted by default. This is the one place where the platform will genuinely let you silence your own alarms, because that exception can be switched off.

1. 1Open Settings, then Notifications, then Do Not Disturb. Wording varies by manufacturer; on Samsung it sits under Notifications, on stock Android under Sound & vibration.
2. 2Find the exceptions, sometimes called People and apps or Allow interruptions.
3. 3Confirm that Alarms is allowed. If you have created a custom Do Not Disturb schedule at some point, check that schedule’s own exceptions too, because it can carry its own separate settings.
4. 4Check the alarm volume slider while you are there, under Settings, then Sound & vibration. It is independent of ring and media volume.

Everything above applies to alarms set in the system Clock app. A third-party alarm app inherits those guarantees only if it asks the operating system for a real alarm. Some do not.

An app that wakes you with an ordinary notification rather than a registered alarm is subject to every rule that applies to notifications, which is precisely the set of rules alarms are exempt from. Silent mode silences it, Do Not Disturb silences it, and the notification channel it uses has its own volume and importance settings that the user never sees.

This is invisible from a store listing and it is not something an app will advertise. The only reliable way to tell is to test it: enable silent mode and Do Not Disturb, set an alarm two minutes out, lock the phone and put it down.

Roosta registers alarms with the operating system rather than raising a notification, which is why silent mode and Do Not Disturb do not affect it, and why it still rings when the app has been swiped away.

If alarms are being suppressed and silent mode is not the reason, the cause is almost always one of four things, in this order.

Work down that list before changing anything else. Between them they account for the overwhelming majority of silent alarms on both platforms, and each takes well under a minute to rule out.