> For the complete documentation index, see [llms.txt](https://docs.xbstation.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xbstation.com/xblink-duo/user-manual/getting-started/xblink-webapp/device.md).

# Device

This article show you how to check clearly the status of SIM and Antennas.

After connecting successfully to [**WebApp**](/xblink-sat-ndaa/user-manual/getting-started/xblink-webapp.md). Click to **Device Tab** to check the antennas and SIM status as below.

* If **Antennas Fail**, please check and make sure the antenna is installed correctly or you are in a weak signal area (like a closed room). No need to reset XBLink.
* If **SIM** **Fail**, Please **insert** SIM and **reset** XBLink.

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