About connecting to a Wi-Fi network for UMA
Depending on your wireless service provider, you might be able to make calls, send and receive email, PIN, SMS text, and MMS messages, and visit web pages using UMA. Your device must be connected to a Wi-Fi® network to use UMA. For more information, contact your wireless service provider.
You can connect to a Wi-Fi network without saving the connection information, or you can save the connection information in a Wi-Fi profile.