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Spark Smart Modem 2 - How to check your modem lights

Learn what the colours and behaviours of the different lights on your modem mean.

Note: If all the lights except the power light are slow flashing green, it means a firmware update is in progress. Don't turn off the power while the update is in progress.

Lights on the front of your modem

Light behaviour
Description

No light

Modem is not connected to a power source.

Solid green

Modem is powered on.

Slow flashing green

Factory reset is in progress.
Light behaviour
Description

No light

Modem is booting up.

Solid white

Modem is ready to be connected.

Solid orange

Modem is establishing a connection to the internet.

Solid green

Modem is connected on Fibre broadband.

Solid blue

Modem is connected on Wireless broadband.

Solid light blue

Modem is in bridge mode.

Solid red

Modem is in error state.
Light behaviour
Description

No light

Modem is not connected to the 4G mobile link.

Solid green

The signal strength to the modem is good.

Solid blue

The signal strength to the modem is fair.

Solid red

The signal strength to the modem is poor.

Flashing red

SIM card is being validated.

Slow flashing blue

Modem is connecting to the 4G mobile network.
Light behaviour
Description

No light

WiFi is off.

Solid green

WiFi is on.

Slow flashing green

WPS process is in progress (flashing for 120 seconds).

Flashing green

WPS connection failed or timed out (flashing for 5 seconds).
Light behaviour
Description

No light

Modem is not connected to the internet.

Solid green

Modem is connected to the internet.
Light behaviour
Description

No light

No phone link.

Solid green

Phone link is up and connected.

Flashing green

The phone is off-hook (a call is in progress).

Lights on the back of your modem

Light behaviour
Description

No light

No Ethernet / Fibre link.

Solid green

Modem is connected to the Ethernet / Fibre link but is not transmitting data to any device.

Flashing green

Modem is transmitting data to one or more connected devices.