> For the complete documentation index, see [llms.txt](https://docs.racemap.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.racemap.com/tracker-management/sim-cards.md). # Manage SIM cards {% hint style="info" %} Access the SIM cards dashboard: {% endhint %}

Manage your SIM cards in RACEMAP

Manage your RACEMAP SIM cards on our platform * Activation and Deactivation: Activate or terminate specific SIM cards at any time. * Tracker Association: View the name of the associated GPS tracker within the tracker management system. * Data Usage: The "Data Usage" column provides an estimate of current traffic consumption for the month. Exact data usage figures are available with a delay of nearly one month, as we don’t receive real-time updates from the SIM card provider. * Send SMS to specific cards: This feature is helpful when you don't know the exact hardware in which the SIM card is inserted eg. when [initializing new GPS devices](/gps-devices/config/remote.md). In that case, you can directly address messages to specific SIM cards Using RACEMAP SIM cards allows you to send messages via SMS instead of relying on a TCP connection. Learn more about sending messages in the tracker management: {% content-ref url="/pages/WEc6rUIhSCe1qyxMD4Sa" %} [Send messages](/tracker-management/messages.md) {% endcontent-ref %} --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.racemap.com/tracker-management/sim-cards.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.