Systems and methods discussed herein are directed to managing customer Subscriber Identity Module (SIM) and embedded SIM (eSIM) profiles and allocated Mobile Station International Subscriber Directory Numbers (MSISDN) for connected devices, e.g., cars, in different use-cases. For example, in configurations, users may have a primary electronic device, e.g., a mobile phone having a primary MSISDNPRIMARY that is instantiated on a primary Integrated Circuit Card Identifier (ICCID), ICCIDPRIMARY in the billing system of a wireless communication network. When the user has a secondary device paired with the mobile phone, that secondary device may have a secondary MSISDNSECONDARY that is activated with a secondary ICCIDSECONDARY in the billing system. Thus, the secondary device may be used by the user in conjunction with the primary device and is paired with the primary device such that incoming calls are forked to both the primary device and the secondary device.