> For the complete documentation index, see [llms.txt](https://manual.fotokite.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.fotokite.com/system-profile/cellular-modem-and-mobile-data.md). # Cellular Modem & Mobile Data Your Fotokite Sigma system comes with a cellular modem and activated global SIM card built in. It is also possible to insert a custom SIM card into the system. ## Fotokite Global SIM By default, there is a data budget of 1GB/month, which is sufficient for software updates and diagnostics. When [Remote Livestream](/system-profile/remote-livestream.md) is activated, the monthly mobile data budget is automatically increased to 50GB. In case you need even more budget this can be arranged with Fotokite Support. The cellular connection is only guaranteed to work in the country where you purchased your Fotokite system. In case you are traveling to other countries and still want to use Mobile Data, please consult Fotokite support. This connection will always be active globally as long as there is cellular reception at the systems location. ## Bring your own SIM A Bring Your Own SIM configuration can be requested through Fotokite Support. This option allows you to use your own physical SIM card for mobile data connectivity instead of the Fotokite Global SIM. For example, some customers are successfully using FirstNet SIM cards. Please note that each Fotokite system supports one SIM card only. Dual-SIM and eSIMs configurations are currently not supported. The Bring Your Own SIM configuration must be set up at the factory before delivery, as the SIM slot is not user-accessible. Alternatively, the system will need to be brought to your Fotokite partner or dealer for configuration. Compatibility with all networks or SIM cards cannot be guaranteed. --- # 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://manual.fotokite.com/system-profile/cellular-modem-and-mobile-data.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.