Samsung SPH-M300 User Manual page 222

Sprint Vision Connection Status and Indicators
Your phone's display lets you know the current status of your
Sprint Vision connection through indicators which appear at
the top of the screen. The following symbols are used:
If no indicator appears, your phone does not have a current
Sprint Vision connection. To launch a connection, see
"Launching a Sprint Vision Connection" on page 196.
198
Your Sprint Vision connection is active (data is being
transferred); the transmit/receive symbol will blink
to indicate data transmission. Incoming voice calls
go directly to voicemail; outgoing voice calls can be
made, but the Sprint Vision connection will
terminate.
Your Sprint Vision connection is dormant (no data is
being sent or received.) Though not currently active,
when dormant the phone can restart an active
connection quickly; voice calls can be made and
received.
Your phone is not currently able to access
Sprint Vision service features.
Section 3B: Sprint Vision