Patent ID: 9510188
Filing Date: 2016-11-29
CPC Classification: H04L,H04W

Claim Text:
1. A method of operating a wireless device wherein the wireless device includes memory with dummy subscription information stored therein, the method comprising: transmitting an attach request message over a radio interface to a mobile communication network, wherein the attach request message includes the dummy subscription information, wherein the dummy subscription information includes a dummy International Mobile Subscriber Identity (IMSI) for the wireless device; receiving an attach accept message from the mobile communication network over the radio interface, wherein the attach accept message is responsive to the attach request message; after receiving the attach accept message, establishing a Packet Data Protocol (PDP) connection using the dummy subscription information including the dummy IMSI; after transmitting the attach request message and after receiving the attach accept message, receiving active subscription information for the mobile communication network over the radio interface, wherein the active subscription information is different than the dummy subscription information, wherein the active subscription information includes an active IMSI for the wireless device, and wherein the dummy IMSI and the active IMSI are different, wherein receiving the active subscription information comprises receiving the active subscription information including the active IMSI over the radio interface using the PDP connection; and storing the active subscription information for the mobile communication network including the active IMSI in memory of the wireless device.