| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide methods and apparatus that allow a device to migrate wireless service across multiple wireless networks. <P>SOLUTION: There are provided methods and apparatus that enable storing multiple eSIMs and switching between the eSIMs, each of which is specific to a different carrier network. By loading an appropriate eSIM, a user device can authenticate itself with the selected carrier, rather than roaming. During roaming operation, the user device can load one or more of the previously stored eSIMs. Selection of the eSIM can be done manually by the user or can be driven by the user device based on desired context; for example, based on carrier signal strength, cost-effectiveness, etc. Support for multiple radio technologies also allows universal connectivity for wireless devices, even spanning previously incompatible technologies such as GSM (Global Standard for Mobile Communications), CDMA (Code Division Multiple Access), etc. <P>COPYRIGHT: (C)2012,JPO&INPIT |
