A metered connection is an Internet connection that has a data limit associated with it. Cellular data connections are set as metered by default. Wi-Fi network connections can be set to metered but aren’t by default. Some apps and features in Windows will behave differently on a metered connection to help reduce your data usage.
To set a Wi-Fi network connection as metered:
Select Start > Settings > Network & Internet > Wi-Fi > Manage known networks.
Select the Wi-Fi network > Properties > turn on Set as metered connection.