# Critical push notifications and DND overrides

In this article, we will guide you through the process of overriding Do Not Disturb and Sleep modes on mobile devices to ensure that critical notifications are always delivered. For applications handling urgent alerts—such as incident management—bypassing these settings is essential to guarantee timely responses. We will cover platform-specific approaches, including how to configure settings on both iOS and Android devices, ensuring that vital notifications can break through device silences when it matters most.

{% hint style="info" %}
**Download ilert app**

[For iOS](https://apps.apple.com/us/app/ilert/id542915864?l=en\&platform=iphone)

[For Android](https://play.google.com/store/apps/details?id=de.ilert.client.iphone\&hl=en_US\&pli=1)
{% endhint %}

## iOS (iPhone, iPad)

{% content-ref url="/pages/6QfUbIEzGDqqcsEKYlrv" %}
[iOS critical alerts configuration](/mobile-app/mobile-app-notification-settings/critical-push-notifications-and-dnd-overrides/ios-critical-alerts-configuration.md)
{% endcontent-ref %}

## Android

{% content-ref url="/pages/lNo00BkMJq0qzHVSjlKb" %}
[Android Push Notification DND Configuration](/mobile-app/mobile-app-notification-settings/critical-push-notifications-and-dnd-overrides/android-push-notification-dnd-configuration.md)
{% endcontent-ref %}


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