2N TELEKOMUNIKACE a.s., www.2n.cz
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LED Indicators
Red, slow flashing – battery supply in progress, battery capacity
below 50%
Red, fast flashing – battery supply in progress, battery capacity
critically low (less than 10 %)
No light indication – battery disconnected
CELLULAR
NETWORK
Indicates the mobile
network connection
status
Permanently on – SIM OK, Internet connection available. The LED
color signals the network technology used:
Yellow – 2G
Green – 3G
Blue – 4G
Slow network LED flashing indicates that the SIM card and registration
are OK, but the Internet connection is unavailable.
Red, slow flashing – SIM OK, network search in progress
Red, fast flashing – SIM error (PIN unset or card rejected by
network)
No light indication – SIM not inserted
SIGNAL STRENGTH
Indicates the signal
strength.
Blue – strong signal (> = −80 dBm)
Green – medium signal (< = −80 dBm)
Red – weak signal (< −100 dBm)
No light indication – no signal (< −110 dBm)
