Some Windows 10 devices have a SIM card and/or eSIM in them that lets you connect to a cellular data network (aka: LTE or Broadband), so you can get online in more places by using a cellular signal.
If your Windows 10 device doesnâ€™t have a SIM card or eSIM, you can still connect to a cellular network by plugging in an external cellular device (also called a cellular modem or mobile broadband device). However, these external cellular devices will often have their own settings instead of being able to use the built-in Settings > Network & Internet > Cellular settings in Windows 10.
To help control your data usage, you can choose which apps can or cannot use cellular data.
If you do not want any apps to be allowed to use cellular data, turn off Let apps use my cellular data. Apps wonâ€™t be allowed to use cellular data. Theyâ€™ll only send and receive data when youâ€™re connected to another kind of network.
If you do not want a specific app to use cellular data, find the app under Choose apps that can use your cellular data, and then turn off cellular data for that app.
This tutorial will show you how to allow or deny apps access to use cellular data for all users or only your account in Windows 10.