A SIM card is a small rectangular plastic card that stores your phone number and important information about your wireless service. The FX3100 series indoor router supports only Nano SIM cards.
NOTE: If you received the router from your service provider, the device manufacturer may have pre-installed a SIM card. Please inspect the SIM slots on the back of the device to confirm.
CAUTION! Always use a factory-made SIM card supplied by the service provider. Do not bend or scratch your SIM card. Avoid exposing your SIM card to static electricity, water, or dirt.
To install a SIM card:
NOTE: Should your SIM card be lost or damaged, contact your service provider.