Sprint Nextel U300 - Manual (Page 23)

CDMA LED Operation
CDMA LED
FUNCTIONS
LED Color - CDMA
Dual LED
RED GREEN
3G standby and ready
to connect
OFF
Slow
Flashing
Power on boot or
reset
3G out of service or is
still acquiring service
ON ON
3G service not
available
ON OFF
3G service connected OFF
Fast
Flashing
3G service connected
and no activity
OFF ON
Not in 3G/4G service
area
OFF OFF
Section 3A . Technical Specifications 15
Specifications
WiMAX LED
FUNCTIONS
LED Color - WiMAX
Dual LED
RED BLUE
4G standby and ready
to connect
OFF ON
4G out of service or is
still acquiring service
ON OFF
4G error condition or
downloading firmware
Flashing OFF
4G service connected OFF
Flashing at
the rate of
data
transfer
4G service connected
and no activity
OFF OFF
WiMAX LED Operation