Samsung SCH-3500 - Manual (Page 21)

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Display indicators.
Display indicators appear across the top of your phone’s
display screen. These display indicators (or icons) will vary
based your phone’s operating mode.
Signal strength: This icon shows your current signal
strength. More lines indicate more signal strength.
Four lines indicate maximum strength, and one line
indicates least strength.
Service indicator: This icon indicates a call is in
progress.
No service indicator: This icon indicates your phone
cannot find a signal because you’re outside a service
area. When this is displayed, you cannot make or
receive calls. Wait a little while for a signal or move
into an open area.
Roaming: This icon indicates you are “roaming” off
the Sprint PCS Nationwide Network.
Message indicator: This icon indicates you have
message(s) waiting. Press to see the message
menu, or press and hold to be connected to
Sprint PCS Voicemail.
Analog mode: This icon indicates your phone is
operating in analog mode. Your phone will be able to
place and receive calls where Sprint PCS roaming
agreements exist, but quality will be similar to calls on
other analog cellular networks.
Also, some features of
your phone may not be available in Analog mode.
Vibrator on: This icon means that an incoming call
will vibrate the phone rather than ring it. This feature
is good for quiet situations where you don’t want your
ringer to disturb others.
Battery strength: This icon shows the level of your
battery charge. The more black bars you see, the
greater the charge. When the battery becomes very
low, an empty box appears and the phone flashes
an alert.