Whenever you do anything on your phone that requires a network connection, such as send and receive email, get social networking feeds, visit websites, or download apps, your phone automatically connects to a cellular data
network to transmit the information. If you're connected to a Wi-Fi network
, the Wi-Fi network connection
is used instead.
When you add a hidden Wi-Fi network
to connect your phone to, the network will remain listed in Wi-Fi settings until you delete it.
This tutorial will show you how to delete a hidden Wi-Fi network
that you added to your Windows Phone 8