14 DAY TRIAL // Owners of Nokia Lumia smartphones updating to the newer Nokia Black software release will see a series of changes to the network icons on their devices, it seems.
Depending on their wireless carrier, these icons are meant to inform them on when the cellular data is being used. Basically, they become active only in these situations, as WPCentral notes.
Apparently, the change has been already observed on international flavors of Lumia phones, though they are not available on devices at wireless carriers such as AT&T.
“When your cellular data connection is being used to transfer data, you may see the Cellular data used icon, depending on your mobile operator. This icon only appears on phones that have Windows Phone software version 8.0.10501.127 or later,” Microsoft explains on its support website.
The cellular data connection icons will also show you the type of connection used, such as 3G, 4G for LTE and HSPA+, Wi-Fi, and the like.