Ensure that a SIM card is correctly inserted into the Hera, following the picture:
Use SIM slot 1 first.
With the writing on the Hera up the correct way insert the SIM card with the gold plated side underneath.
Ensure that the SIM card is fully inserted so that it is flush to the edge of the router.
For more information about setting up a Hera 600 series router, see: http://www.dataflex.com/hera/ or see below: