Want to buy a data plan? There’s a Microsoft app—and SIM card—for that

Cellular Data.

The Verge has spotted a mysterious app in the Windows Store. Published by Microsoft, the “Cellular Data” app “allows you to connect to a trusted nationwide mobile data network using only your Microsoft account.”

The app, which seems to work in the UK, US, and France, says that connectivity bought this way requires no contracts or long-term commitment, allowing short-term access to LTE data at your convenience. This will be a useful addition for systems like the Surface 3, which come with integrated LTE support.

While this seems useful already, the unusual part is a sentence in the app’s description: “This app is designed to work solely with specific Windows 10 devices and requires a Microsoft SIM card” (emphasis ours). The implication here is that Microsoft will be offering some kind of carrier-independent SIM card, with the app providing the necessary configuration to plumb it in to a network. This sounds similar to what Apple started doing when it updated the iPads in late 2014, though Microsoft has yet to formally announce any intent to offer anything comparable. Alternatively, Microsoft could have signed a number of MVNO deals to piggy back off other services, similar to what brands such as Straight Talk and Virgin do.