Samsung Exclaim SPH-M550 User Manual page 174

When is my data connection active?
Your connection is active when data is being
transferred. Outgoing calls are allowed; incoming calls
go directly to voicemail. When active, the or
indicator animates on your phone's display screen.
When is my data connection dormant?
If your phone receives no data for 10 seconds, the
connection goes dormant. When the connection is
dormant, you can make and receive voice calls. (The
connection may become active again quickly.) If your
phone receives no data for an extended period of time,
the connection will terminate.
Can I sign out of data services?
You can sign out without turning off your phone;
however, you will not be able to browse the Web or use
other data services. While signed out, you can still
place or receive phone calls, check voicemail, and use
other voice services. You may sign in again at any time.
To sign out, highlight
> Settings > More... > Data > On/
in your phone's menu.
Off
160 3B. Web and Data Services