Your SIM must be inserted before you can use your router.
Take hold of the SIM slot cover and remove it.
Orient the nano SIM to match the image near the slot.
Please note: your router only supports nano SIMs. If you’re using a newly provided SIM, push out the smallest SIM (white) from the SIM holder.
Slide the nano SIM into the SIM slot until it clicks into place.
Replace the SIM slot cover and press it into place.