Embodiments are provided for registering an electronic device of a subscriber for cellular-based communications. According to certain aspects, the cellular-based communications may be facilitated by a data center while the electronic device is not easily within range of a cellular network, such as when the electronic device is traveling on an aircraft. The registration includes associating a subscription identification of a cellular services plan with an identification of the electronic device, from which a registration server may create an account associated with the cellular-based communications. Further, the registration server may generate a digital certificate using the electronic device identification and issue the digital certificate to the electronic device.