LG MMBB0267301(1.0) User Manual page 177

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 indicator flashes on your
phone's display screen.
When is my data connection dormant?
If no data is received for 10 seconds, the connection goes
dormant. When the connection is dormant, voice calls are
allowed. (The connection may become active again quickly.)
If no data is received for an extended period, 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 use Web or 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, go to Menu > Settings > More... > Data
> On/Off in your phone's menu.
164 Section 3B: Data Services