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USER GUIDE
8. troubleshootIng
SYMPTOM
POSSibLE SOLuTiOn
No LEDS burning
Check if the device is firmly plugged into a USB
port or check the connection of the cable if you
are using this. If still not working, try to use
another USB port
Insufficient signal strength
Move the device to a location with better
coverage (e.g. window). The extension cable can
be of help for this. Use the signal strength tool
to see the signal strength
SIM card was not present
when connecting the device
to a USB port
Disconnect the device, insert the SIM
and reconnect
Drivers are not properly
loaded. Device shows yellow
exclamation marks in the
PC’s Device Manager window
Close communication software that might be
accessing the device. Close all ports before
disconnecting the device from your computer.
Reinsert the device
LEDs breathe, but do not stay
lit after attempt to connect
The APN is not correct. Check the settings
with the ones that you’ve obtained from your
network operator
You are roaming and the
network you are using does
not allow data links with your
home operator
Manually select another network that supports
data links with your home operator