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 micro SIMs. If you’re using a newly provided SIM, push out the middle sized SIM from the SIM holder.
Slide the micro SIM into the slot until you feel it click into place.
Replace the SIM slot cover and press it into place.