Samsung Galaxy S 4G User Manual page 63

Note: When you select an open network you are automatically connected.
Wi-Fi Connected
Displays when Wi-Fi is connected, active, and
communicating with a Wireless Access Point (WAP).
Wi-Fi Communication Issue
Displays when Wi-Fi is active but there is a
communication issue with the target Wireless
Access Point (WAP).
From the Home screen, tap
2.
3.
(Wi-Fi Calling).
Tap the slider to
activate Wi-Fi
Calling. The
slider shows On.
Your device
connects to the
Wi-Fi Calling
T-Mobile
activation
slider
Network.
Call Functions and Contacts List 58