> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hologram.io/llms.txt
> Use this file to discover all available pages before exploring further.

# What are fallback events for Hyper SIMs with Outage Protection?

> Hologram's Hyper SIMs with Outage Protection can switch mobile cores automatically in the case an installed profile loses connectivity, protecting you from downtime and outages. When a SIM switches connectivity profiles automatically, we call this a **fallback event**.

<Info>
  **Limited access:** Prevent unexpected outages with Outage Protection and get contractually guaranteed reliability by contacting our [sales team](https://www.hologram.io/contact-sales?utm_source=docs\&utm_medium=website\&utm_content=outage_protection_callout).
</Info>

## How do I identify fallback events?

Only one connectivity profile ("mobile core") on a SIM can actively use data and connect to networks. When profiles on a SIM change either due to over-the-air eUICC updates or fallback events, the active ICCID changes. You can identify profile changes by looking for ICCID changes between sessions. The **enabled profile ICCID** listed across pages in your dashboard the ICCID of the profile currently enabled and able to use data.

## Where can I find a list of all fallback events for a SIM?

1. To find details about installed profiles for your SIM and a full history of fallback events, open a SIM's details page from the **SIMs** section in the main menu of your dashboard or by searching for the SIM.

2. Navigate to the **Profiles tab** where you can see the currently installed profiles on the SIM and information about how your SIM will connect through multiple profiles.

3. The **Fallback history card** at the bottom of the page will list all fallback events for the SIM.

   <Frame>
     <img src="https://mintcdn.com/hologram-b29df2a6/gBXuuJ66IPyI_nhw/images/sims/sim-fallback-history-card.webp?fit=max&auto=format&n=gBXuuJ66IPyI_nhw&q=85&s=b877922e38d61b94bf32dbd5cdb372c9" alt="Fallback history card showing list of fallback events" width="2208" height="534" data-path="images/sims/sim-fallback-history-card.webp" />
   </Frame>

### Identify a fallback event

1. When viewing session details for a SIM, look for a sequence of sessions in which the ICCID changes.

2. In the **Recent Sessions tab** for a single SIM, individual fallback events are called out with an indicator and on the row next to the session's profile ICCID.

   <Frame>
     <img src="https://mintcdn.com/hologram-b29df2a6/gBXuuJ66IPyI_nhw/images/usage/usage-sim-recent-sessions.webp?fit=max&auto=format&n=gBXuuJ66IPyI_nhw&q=85&s=5dece41ddffc91c9964764f493916388" alt="Recent Sessions tab with fallback event indicator" width="2481" height="1946" data-path="images/usage/usage-sim-recent-sessions.webp" />
   </Frame>

<Note>
  **Note:** This functionality was formerly called "fallback for Dual-Core Capable SIMs". Hologram's Hyper SIMs support fallback natively when two or more profiles are installed, which we now call "Multi-Core".
</Note>