> For the complete documentation index, see [llms.txt](https://docs.eseye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eseye.com/infinity-classic/monitor-and-troubleshoot/monitor-sims-and-devices.md).

# Monitor SIMs and devices

This section describes how to monitor your SIMs and devices, including:

* Managing alert profiles
* Managing Reports
* Locating devices using a cellular connection
* Displaying SIM Timelines

## Viewing aggregated connection and data flow metrics

The Margay tool enables you to observe patterns, problems and anomalies with your network performance, using a web interface or the [Margay API](/resources/readme/margay-api-1.0-developer-guide.md). You can access connection metrics, such as authentication and data throughput statistics, and display these by geographic region for a specified time period.

## Monitoring tools in Infinity Classic

The [SIM Actions](/infinity-classic/manage-your-sim-estate/sim-actions.md) on the SIMs > SIM List page also enable you to monitor the following:

* [Billing information](/infinity-classic/manage-your-sim-estate/sim-actions/view-billing-activity.md) including data, SMS and voice usage.
* [Messaging usage](/infinity-classic/manage-your-sim-estate/sim-actions/view-messaging-activity.md) including SMS, USSD and API messages.
* [RADIUS authentication information](/infinity-classic/manage-your-sim-estate/sim-actions/view-radius-activity.md) including session timings and MCC/MNC values.
* [NetFlow data](/infinity-classic/manage-your-sim-estate/sim-actions/view-netflow-activity.md) including traffic flow and volume per SIM.
* Connectivity using the [Control Panel](/infinity-classic/manage-your-sim-estate/sim-actions/use-the-sim-control-panel.md) which can send ping messages to the device.


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