Patent 9549310 was granted and assigned to Eseye Limited on January, 2017 by the United States Patent and Trademark Office.
A cellular device 10 has a SIM 12 having a unique identifier 14, for example formatted as an IMSI. The cellular device is activated by a registration process which registers the SIM to a selected home network. In this way, the cellular device can be bundled with a SIM before it is known for which country, region or network the cellular device will be sold.