Possible reasons for this may be that there is no SIM inserted in the device, or it is inserted incorrectly, or the SIM is disabled. Please notice whether you insert the SIM when your LINKHUB is switched on. If so, please restart the device after inserting the SIM. If you do insert the SIM when your LINKHUB is switched off, please try removing your SIM and reinserting it. Make sure not to touch the contact point when you operate above steps.
NOTE: Power off your device before removing the SIM.
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What should I do if it says "No SIM card" or "Invalid SIM card" is displayed on the web UI?
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