A wireless broadband data plan must be added to your Cradlepoint IBR600C Series IoT Router for wireless broadband connectivity. Wireless broadband data plans are available from network operators. The SIM card must be activated and provisioned by the network operator. Contact your network operator for details about selecting a data plan and about the process for provisioning your SIM. To configure the router for failover and failback functionality, refer to the article, Effectively Utilizing 2-SIM Modems.