Samsung SCH-u640 Cell Phone User Manual


 
Understanding Your Phone 21
3G Network
: Appears when your phone is using the 3G
protocol. Appears when your phone is on and indicates the
current signal strength. More bars indicate a stronger
signal.
1X
: Indicates your phone is using the CDMA 1X protocol.
Appears when your phone is on and indicates the current
signal strength. More bars indicate a stronger signal.
3G Network & 1X
: The 3G/1X protocol is capable of high-
speed broadband data. Appears when your phone is on and
indicates the current signal strength. More bars indicate a
stronger signal.
Digital
: Appears when your phone is receiving digital data.
Appears when your phone is on and indicates the current
signal strength. More bars indicate a stronger signal.
SSL
: Indicates the secure socket layer is actively
transmitting your communications over the internet in an
encrypted format.
Voice Privacy
: Prevents eavesdropping over a CDMA traffic
channel.
No Service
: Your phone cannot find a signal because you’re
outside a service area. You cannot make or receive calls.
Wait for a signal or move to an open area to find a signal. This
indicator always appears when you first turn on your phone
and disappears once service is located.
Voice Call
: Indicates a call in progress.
Data Call
: Indicates a data call in progress.
Dormant
: Indicates no incoming or outgoing data.
Location E911
: Indicates Global Positioning Service (GPS)
for 911 is set to On for emergency calls only.
Location On
: Global Positioning Service is set to On for
location and 911 calls.
Battery Level
: More bars indicate a greater charge. When
the battery is low, an empty battery icon flashes and the
phone sounds an alert, which indicates your phone is about
to shut down.
TTY
: Indicates that TTY is enabled.
BT On
: Indicates that Bluetooth wireless technology is
turned on.