PATENT DOCUMENT

Publication Number: US-11463883-B2
Application Number: US-202017001575-A
Country: US
Kind Code: B2

Title: Cellular service account transfer for accessory wireless devices

Abstract:
This Application describes efficient cellular service transfer mechanisms to move cellular services that are based on cellular service credentials, e.g., eSIMs, between accessory wireless devices under various scenarios, including in some embodiments transfer of multiple eSIMs. The first and second accessory wireless devices and the primary wireless device are associated with a common user account. Transfer of credentials for cellular service access can occur between two accessory wireless devices via the primary wireless device, where the primary wireless device and the accessory wireless devices interact with applicable network-based servers.

Claims:
What is claimed is: 
     
       1. A method for transferring cellular service credentials from a first accessory device associated with a primary device to a second accessory device, the method comprising:
 by the primary device:
 pairing the primary device with the second accessory device; 
 establishing a secure connection with a first mobile network operator (MNO) server; 
 obtaining, via the secure connection from the first MNO server, cellular service plan status for a first electronic subscriber identity module (eSIM) of the first accessory device; 
 sending, to the first MNO server, a request to transfer cellular service credentials for the first eSIM to the second accessory device; 
 receiving, from the first MNO server, an assignment of a second eSIM for the second accessory device; 
 causing the second accessory device to download the second eSIM from a second MNO server; and 
 sending, to the first MNO server, confirmation of the downloading of the second eSIM to the second accessory device, 
 wherein the first MNO server, after receipt of the confirmation, enables cellular service associated with the second eSIM for the second accessory device and disables cellular service associated with the first eSIM for the first accessory device. 
 
 
     
     
       2. The method of  claim 1 , further comprising:
 at the primary device:
 presenting an option to transfer cellular service credentials from the first accessory device to the second accessory device; and 
 obtaining an indication to transfer the cellular service credentials to the second accessory device, 
 wherein the primary device sends the request to the first MNO server to transfer the cellular service credentials responsive to receipt of the indication. 
 
 
     
     
       3. The method of  claim 1 , wherein:
 the first MNO server comprises an entitlement server; and 
 the primary device authenticates with the first MNO server to establish the secure connection based on a SIM or eSIM installed in the primary device. 
 
     
     
       4. The method of  claim 3 , wherein the SIM or eSIM of the primary device and the first eSIM of the first accessory device share a common mobile station international subscriber directory number (MSISDN). 
     
     
       5. The method of  claim 3 , wherein the SIM or eSIM of the primary device and the first eSIM of the first accessory device have distinct mobile station international subscriber directory numbers (MSISDNs). 
     
     
       6. The method of  claim 1 , wherein, the request to transfer the cellular service credentials for the first eSIM comprises:
 a first eSIM identifier and a first hardware identifier of the first accessory device; and 
 at least one hardware identifier of the second accessory device. 
 
     
     
       7. The method of  claim 6 , wherein the at least one hardware identifier of the second accessory device comprises an embedded universal integrated service circuit card (eUICC) identifier and an international mobile equipment identifier (IMEI) of the second accessory device. 
     
     
       8. The method of  claim 1 , further comprising:
 providing, by the primary device to the first MNO server, user authentication for a registered user of the first accessory device. 
 
     
     
       9. The method of  claim 8 , wherein the user authentication is provided based on a trust score managed by a third-party server. 
     
     
       10. The method of  claim 8 , wherein the user authentication is provided based on interaction with a web-sheet server managed by an MNO associated with the first MNO server. 
     
     
       11. The method of  claim 1 , wherein the assignment of the second eSIM for the second accessory device includes a second SIM identifier and a network address for the second MNO server. 
     
     
       12. The method of  claim 11 , wherein the network address comprises a universal resource locator (URL) or a fully quality domain name (FQDN) for the second MNO server. 
     
     
       13. The method of  claim 1 , further comprising:
 by the primary device:
 obtaining, from one or more MNO servers including the first MNO server, cellular service plan statuses for multiple eSIMs of the first accessory device, wherein the multiple eSIMs includes the first eSIM; 
 presenting a list of transferable cellular service plans; and 
 obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for the first eSIM to the second accessory device. 
 
 
     
     
       14. The method of  claim 13 , further comprising:
 by the primary device:
 obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for at least one other eSIM of the multiple eSIMs to the second accessory device; and 
 downloading, from an MNO server associated with the one other eSIM, a third eSIM to the second accessory device. 
 
 
     
     
       15. The method of  claim 14 , wherein the second eSIM and the third eSIM are associated with different MNOs. 
     
     
       16. The method of  claim 1 , further comprising:
 by the primary device:
 providing, to the second accessory device, a network address for the second MNO server. 
 
 
     
     
       17. The method of  claim 1 , wherein the second accessory device connects to the second MNO server directly via a non-cellular access connection to download the second eSIM. 
     
     
       18. The method of  claim 1 , wherein the second accessory device connects to the second MNO server via a cellular access connection established by the primary device. 
     
     
       19. An apparatus configured for operation in a primary device, the apparatus comprising:
 one or more processors; and 
 a memory communicatively coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the primary device to transfer cellular service credentials from a first accessory device associated with the primary device to a second accessory device by performing a set of actions including:
 pairing the primary device with the second accessory device; 
 establishing a secure connection with a first mobile network operator (MNO) server; 
 obtaining, via the secure connection from the first MNO server, cellular service plan status for a first electronic subscriber identity module (eSIM) of the first accessory device; 
 sending, to the first MNO server, a request to transfer cellular service credentials for the first eSIM to the second accessory device; 
 receiving, from the first MNO server, an assignment of a second eSIM for the second accessory device; 
 causing the second accessory device to download the second eSIM from a second MNO server; and 
 sending, to the first MNO server, confirmation of the downloading of the second eSIM to the second accessory device, 
 
 wherein the first MNO server, after receipt of the confirmation, enables cellular service associated with the second eSIM for the second accessory device and disables cellular service associated with the first eSIM for the first accessory device. 
 
     
     
       20. A primary device comprising:
 wireless circuitry comprising one or more antennas; 
 one or more processors communicatively coupled to the wireless circuitry; and 
 a memory communicatively coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the primary device to transfer cellular service credentials from a first accessory device associated with the primary device to a second accessory device by performing a set of actions including:
 pairing the primary device with the second accessory device; 
 establishing a secure connection with a first mobile network operator (MNO) server; 
 obtaining, via the secure connection from the first MNO server, cellular service plan status for a first electronic subscriber identity module (eSIM) of the first accessory device; 
 sending, to the first MNO server, a request to transfer cellular service credentials for the first eSIM to the second accessory device; 
 receiving, from the first MNO server, an assignment of a second eSIM for the second accessory device; 
 causing the second accessory device to download the second eSIM from a second MNO server; and 
 sending, to the first MNO server, confirmation of the downloading of the second eSIM to the second accessory device, 
 wherein the first MNO server, after receipt of the confirmation, enables cellular service associated with the second eSIM for the second accessory device and disables cellular service associated with the first eSIM for the first accessory device.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application claims the benefit of U.S. Provisional Application No. 62/897,917, entitled “CELLULAR SERVICE ACCOUNT TRANSFER FOR ACCESSORY WIRELESS DEVICES,” filed Sep. 9, 2019, the content of which is incorporated by reference herein in its entirety for all purposes. 
    
    
     FIELD 
     The described embodiments relate to wireless communications, including methods and apparatus to support transfer of cellular wireless services, such as cellular voice and data services authorized by electronic SIM (eSIMs), between accessory wireless devices linked to a primary wireless device. 
     BACKGROUND 
     Newer generation, e.g., fourth generation (4G) and fifth generation (5G), cellular wireless networks, which use newer radio access technology and implement one or more 3 rd  Generation Partnership Project (3GPP) Long Term Evolution (LTE), LTE Advanced (LTE-A), and 5G standards, are rapidly being developed and deployed by network operators worldwide. The newer cellular wireless networks provide a range of packet-based voice and data services. A user of a wireless device can access services offered by a wireless network service provider, also referred to as a mobile network operator (MNO), based on service subscriptions controlled by authentication credentials included in a profile, also referred to as a subscriber identity module (SIM), when included in a removable universal integrated circuit card (UICC), also referred to as a SIM card, or as an electronic SIM (eSIM), when included in an embedded UICC (eUICC) of the wireless device. With a removable UICC and unlocked wireless devices that accommodate removable UICCs, a user can transfer the UICC/SIM combination between the unlocked wireless devices. Accessory wireless device, however, are linked with primary wireless devices and can include only eSIMs on an eUICC of the accessory wireless device. Transfer of a cellular service associated with an eSIM of an eUICC of an accessory wireless device to an eUICC of another accessory wireless device can require interaction with associated MNO servers. There exists a need for mechanisms to allow a user to transfer cellular services associated with one or eSIMs efficiently between accessory wireless devices. 
     SUMMARY 
     This Application describes efficient cellular service transfer mechanisms to move cellular services that are based on cellular service credentials, e.g., eSIMs, between accessory wireless devices that are associated with a primary wireless device under various scenarios, including, in some embodiments, transfer of multiple eSIMs. To simplify initial configuration or subsequent restoration of an accessory wireless device, a user can seek to transfer cellular services for one or more eSIMs from a first accessory wireless device to a second accessory wireless device, where the first and second accessory wireless devices are each associated with a common primary wireless device. In some embodiments, the first and second accessory wireless devices and the primary wireless device are associated with a common user account. Transfer of credentials for cellular service access can occur between two accessory wireless devices via the primary wireless device, e.g., where the accessory wireless devices can connect securely to the primary wireless device via a local connection, such as via a wireless personal area network (WPAN) connection, via a wireless local area network (WLAN) connection, via a peer-to-peer connection, or the like. In some embodiments, the first accessory wireless device can provide information to the primary wireless device and/or to an online network-based service, such as an iCloud® service, and the information can be used to transfer cellular service credentials to the second accessory wireless device. In some embodiments, the first accessory wireless device may not be available when configuring or restoring the second wireless accessory device, and previously stored information can be used to transfer cellular service access credentials to the second wireless accessory device. An accessory wireless device can include multiple eSIMs, of which one may be in an enabled state and others in a disabled state. In some embodiments, a user can determine cellular service credentials from one or more eSIMs to transfer from the first accessory wireless device to the second accessory wireless device. Information regarding the transferability of the cellular services for eSIMs of a first accessory wireless device can be obtained from cellular service information and/or associated MNO information stored in the first accessory wireless device, stored in an associated network-based service, and/or stored in an associated primary wireless device. Transferability information can also be obtained from associated MNO servers. Transferability information for eSIMs of the first accessory wireless device to the second accessory wireless device can be presented, including an option to transfer cellular service credentials for one or more eSIMs, can be presented via an associated primary wireless device, such as during configuration or restoration of the second wireless accessory device. In some embodiments, first accessory wireless device and the primary wireless device share a common cellular service account managed by an associated MNO. In some embodiments, the first accessory wireless device and the primary wireless device may not share a common cellular service account of an associated MNO. In some embodiments, the first accessory wireless device or the primary wireless device may each use distinct cellular service accounts managed by different MNOs. Transfer of cellular service credentials to the second accessory wireless device can be accomplished via mechanisms detailed herein in each of these scenarios. 
     Other aspects and advantages of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the described embodiments. 
     This Summary is provided merely for purposes of summarizing some example embodiments so as to provide a basic understanding of some aspects of the subject matter described herein. Accordingly, it will be appreciated that the above-described features are merely examples and should not be construed to narrow the scope of the subject matter described herein in any way. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following Detailed Description, Figures, and Claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The disclosure will be readily understood by the following detailed description in conjunction with the accompanying drawings, where like reference numerals designate like structural elements. 
         FIG. 1  illustrates a diagram of an exemplary transfer of cellular service account credentials for access to cellular services from a first accessory device to a second accessory device linked to a primary device, according to some embodiments. 
         FIG. 2  illustrates an exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device to a second accessory device via a primary device that shares an MNO with the first accessory device, according to some embodiments. 
         FIGS. 3 and 4  illustrate exemplary sets of actions for transferring cellular service credentials for one or more eSIMs from a first accessory device to a second accessory device via a primary device that shares one or more MNOs with the first accessory device, according to some embodiments. 
         FIGS. 5A and 5B  illustrate another exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device to a second accessory device via a primary device that shares an MNO with the first accessory device, according to some embodiments. 
         FIGS. 6 and 7  illustrate exemplary sets of actions for transferring cellular service credentials for an eSIM from a first accessory device to a second accessory device via a primary device that does not share an MNO with the first accessory device, according to some embodiments. 
         FIGS. 8A, 8B, and 8C  illustrate another exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device to a second accessory device via a primary device that shares an MNO with the first accessory device, according to some embodiments. 
         FIG. 9  illustrates an exemplary set of actions for transferring cellular service credentials for an eSIM from an existing wireless device to a new wireless device using an authentication token, according to some embodiments. 
         FIG. 10  illustrates an exemplary method performed by a primary device to transfer cellular service credentials for an eSIM from a first accessory device to a second accessory device, according to some embodiments. 
         FIG. 11  illustrates a block diagram of exemplary elements of a mobile wireless device, according to some embodiments. 
     
    
    
     DETAILED DESCRIPTION 
     Representative applications of methods and apparatus according to the present application are described in this section. These examples are being provided solely to add context and aid in the understanding of the described embodiments. It will thus be apparent to one skilled in the art that the described embodiments may be practiced without some or all of these specific details. In other instances, well known process steps have not been described in detail in order to avoid unnecessarily obscuring the described embodiments. Other applications are possible, such that the following examples should not be taken as limiting. 
     In the following detailed description, references are made to the accompanying drawings, which form a part of the description and in which are shown, by way of illustration, specific embodiments in accordance with the described embodiments. Although these embodiments are described in sufficient detail to enable one skilled in the art to practice the described embodiments, it is understood that these examples are not limiting; such that other embodiments may be used, and changes may be made without departing from the spirit and scope of the described embodiments. 
     This Application describes efficient cellular service transfer mechanisms that can be used to move cellular services that are based on cellular service credentials, e.g., eSIMs, between accessory wireless devices efficiently under various scenarios, including transfer of multiple eSIMs. Accessory wireless devices can refer to wireless devices that are linked to a primary wireless device as an anchor point, and both the accessory wireless devices and the primary wireless device are capable of connecting with a cellular wireless network via a wireless cellular access network based on credentials stored therein. Exemplary accessory wireless devices include cellular capable wearable devices and Internet of Things (IoT) devices, where the accessory wireless devices include an eUICC to store eSIMs and exclude removable UICC cards (SIM cards). In some embodiments, an accessory wireless device can operate independently of an associated primary wireless device and may or may not share a common mobile network operator (MNO) or a common cellular services account. To simplify initial configuration or subsequent restoration of an accessory wireless device, a user can seek to transfer cellular services for one or more eSIMs from a first accessory wireless device, e.g., an “old” accessory wireless device that was already linked previously with the primary wireless device, to a second accessory wireless device, e.g., a “new” accessory wireless device to be paired with the primary wireless device. In some embodiments, the first accessory wireless device, the second accessory wireless device, and the primary wireless device are each associated with a common user account that is separate from a cellular service account, e.g., an account authenticated by an Apple ID. Transfer of credentials for cellular service access between two accessory wireless devices can occur via the primary wireless device, e.g., where the accessory wireless devices can connect securely to the primary wireless device via a local connection, such as via a wireless personal area network (WPAN) connection, via a wireless local area network (WLAN) connection, via a peer-to-peer connection, or the like. In some embodiments, the first accessory wireless device can provide information to the primary wireless device and/or to an online network-based service, such as an iCloud® service, and the information can be used in a procedure to transfer cellular service credentials to the second accessory wireless device. In some embodiments, the first accessory wireless device may not be available when configuring or restoring the second wireless accessory device. In some embodiments, previously stored information obtained from the first accessory wireless device, e.g., by the primary wireless device, can be used to transfer cellular service access credentials to the second wireless accessory device. 
     An accessory wireless device, in some embodiments, can include multiple eSIMs, of which one SIM may be in an enabled state, while the remaining eSIMs may be in a disabled state. In some embodiments, a user can select which of one or more eSIMs to transfer from the first accessory wireless device to the second accessory wireless device. Information regarding the transferability of the cellular services for eSIMs of a first accessory wireless device can be obtained from cellular service information and/or associated MNO information stored in the first accessory wireless device, stored in an associated third-party network-based service, stored in an associated primary wireless device, or stored in associated MNO servers. Transferability information for eSIMs of the first accessory wireless device to the second accessory wireless device can be presented to a user, e.g., via a display or input/output of the primary wireless device. The primary wireless device can present an option to transfer cellular service credentials for one or more eSIMs to the second wireless accessory device during configuration or restoration of the second wireless accessory device. In some embodiments, the first accessory wireless device and the primary wireless device share a common cellular service account managed by an associated MNO. In some embodiments, the first accessory wireless device and the primary wireless device may not share a common cellular service account of an associated MNO, e.g., when each of the first accessory wireless device and the primary wireless device use different cellular service accounts for a same associated MNO. In some embodiments, the first accessory wireless device and the primary wireless device may each use distinct cellular service accounts managed by different MNOs. Transfer of cellular service credentials to the second accessory wireless device can be accomplished via mechanisms detailed herein in each of these scenarios. 
     In some embodiments, a most recently selected cellular service plan for an eSIM of the first accessory wireless device is used as a default option to transfer to the second accessory wireless device. In some embodiments, a user can select from multiple cellular service plans for different eSIMs of the first accessory wireless device to transfer to the second accessory wireless device. In some embodiments, communication with MNO servers to effect transfer of cellular service credentials to the second accessory wireless device is performed by the primary wireless device. In some embodiments, such as when the first accessory wireless device and the primary wireless device share a common cellular service account or a common MNO, the primary wireless device uses cellular service credentials for a SIM or eSIM of the primary wireless device to authenticate with a network-based server, e.g., an entitlement server, of the associated MNO to transfer the cellular service credentials. In some embodiments, the primary wireless device communicates with one or more MNO servers as a proxy using a token obtained by the first accessory wireless device and accessible to the primary wireless device for authentication with the one or more MNO servers. In some embodiments, the first accessory wireless device communicates with the one or more MNO servers to authenticate and/or authorize transfer of cellular service credentials for one or more eSIMs to the second accessory wireless device. In some embodiments, a user is authenticated using a trust score managed by a third-party server to prove authority to transfer cellular service credentials from the first accessory wireless device to the second wireless accessory device. 
     These and other embodiments are discussed below with reference to  FIGS. 1 through 10 ; however, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for explanatory purposes only and should not be construed as limiting. 
       FIG. 1  illustrates a diagram  100  of an exemplary transfer of cellular service credentials from a first accessory device  110  to a second accessory device  150  assisted by a primary device  120 . During initial configuration or restoration of the second accessory device  150 , the primary device  120  can present an option for configuration of cellular wireless service for the second accessory device  150 , e.g., via a display or input/output of the primary device  120 . The second accessory device  150  can be paired with the primary device  120  for the initial configuration or restoration, and the primary device can determine that the second accessory device is capable of cellular wireless communication using cellular service credentials for one or more (yet to be installed) eSIMs. In some embodiments, the primary device  120  can present an option for establishing cellular service capability for the second accessory device  150 , e.g., to establish a new cellular service for the second accessory device  150  or to transfer cellular service credentials to the second accessory device  150 , which can be from the first accessory device  110 . In some embodiments, the first accessory device  110  is available and can be in communication with the primary device  120  when configuring the second accessory device  150 . In some embodiments, the first accessory device  110  is not available when configuring the second accessory device  150 . In some embodiments, the primary device  120  communicates with one or more MNO servers to transfer cellular service credentials from the first accessory device  110  to the second accessory device  150 . In some embodiments, the first accessory device  110  also participates by communicating with at least one MNO server to transfer the cellular service credentials to the second accessory device  150 . In some embodiments, the second accessory device  150  obtains an eSIM from an associated MNO server via the primary device  120  and installs the eSIM on the second accessory device  150  to enable access to associated cellular wireless services by the second accessory device  150 . 
       FIG. 2  illustrates a diagram  200  of an exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150  via a primary device  120  that shares an MNO with the first accessory device  110 . The first accessory device  110  was previously (or is currently) associated with the primary device  120  but may be unavailable, as indicated by action 1, to participate in the transfer process. In some embodiments, the primary device  120  and the first accessory device  110  share a common cellular service account managed by the MNO. In some embodiments, the primary device  120  and the first accessory device  110  use separate cellular service accounts that are linked together and billed to a common user. In some embodiments, the primary device  120  and the first accessory device  110  use an identical mobile station international subscriber directory number (MSISDN). In some embodiments, the primary device  120  and the first accessory device  110  use distinct MSISDNs. At action 2, the second accessory device  150  pairs with the primary device  120  to establish a local, secure connection between the second accessory device  150  and the primary device  120 . The primary device  120  may be used to configure the second accessory device  150 , e.g., as part of an initial configuration or as part of a restore process. At action 3, the primary device  120  requests status for one or more eSIMs of accessory devices, e.g., for the first accessory device  110 , that are linked with the primary device  120 . The primary device  120  can use cellular service credentials associated with a SIM or eSIM installed in the primary device  120  to authenticate and communicate with an entitlement server  210  of the MNO. At action 4, the entitlement server  210  can send to the primary device  120 , responsive to receipt of the request for eSIM status, an eSIM status response that includes cellular service plan status information for one or more eSIMs of associated accessory wireless devices, which includes the first accessory device  110 . Status of an eSIM of the first accessory device  110  can be provided in the eSIM status response, and the eSIM of the first accessory device  110  can be identified uniquely based on an electronic international circuit card identifier (eICCID) included in the eSIM status response. At action 5, the primary device  120  presents information via a display or input/output of the primary device  120  that prompts a user to select whether to transfer one or more eSIMs to the second accessory device  150 . In some embodiments, indicators for eSIMs that are available to transfer to the second accessory device  150  are presented, while any eSIMs that are not available to transfer are not indicated. In some embodiments, an indication of a particular eSIM to transfer is provided, e.g., by indicating a particular MSISDN or other identifier by which a user can determine which cellular service credentials may be transferred to the second accessory device  150 . At action 6, the primary device  120  obtains an indication to transfer at least one eSIM of the one or more eSIMs available to transfer to the second accessory device  150 . At action 7, the primary device  120  sends to the entitlement server  210  an eSIM transfer request that includes one or more identifiers for the first accessory device  110  and one or more identifiers for the second accessory device  150 . In some embodiments, the one or more identifiers for the first accessory device  110  include a first eICCID that specifies a first eSIM of the first accessory device  110  and a first eUICC identifier (EID) that specifies the eUICC of the first accessory device  110 . In some embodiments, the one or more identifiers for the second accessory device include a second EID that specifies the eUICC of the second accessory device  110  and a second international mobile equipment identifier (IMEI) that specifies the second accessory device  110 . At action 8, the primary device  120  securely authenticates that a user of the first accessory device  110  and/or of the primary device  120  is authorized to transfer cellular service credentials for the specified first eSIM from the first accessory device  110  to the second accessory device  150 . In some embodiments, the primary device  120  provides authentication using a background process that includes a previously stored carrier authentication token obtained by the first accessory device  110  and subsequently accessed by the primary device  120 . An example of use of such a carrier authentication token is described further herein with respect to  FIGS. 5A, 5B, and 9 . In some embodiments, the primary device  120  provides authentication by redirecting to a web-sheet server managed by the MNO and by communicating information via a web-sheet user interface with the web-sheet server to demonstrate that a legitimate user of the first accessory device  110  and/or of the primary device  120  authorizes transfer of the cellular service credentials for the first eSIM from the first accessory device  110  to the second accessory device  150 . At action 9, upon successful user authentication, the entitlement server  210  sends an eSIM assignment message to the primary device  120 . In some embodiments, the eSIM assignment message includes (i) a second eICCID that specifies a second eSIM to be installed in the second accessory device  150 , and (ii) a network address for an MNO server, e.g., for a subscription manager data preparation (SM-DP+) server  220 . In some embodiments, the network address is a universal resource locator (URL) or a fully qualified domain name (FQDN) that the primary device  120  can use to access the SM-DP+ server  220 . At action 10, the second accessory device  150  connects securely to the SM-DP+ server  220  indicated in the eSIM assignment message and downloads securely the second eSIM associated with the second eICCID from the SM-DP+ server  220 . The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 11, the second accessory device  150  sends a confirmation to the entitlement server  210  of the MNO to indicate successful installation of the second eSIM from the SM-DP+ server  220 . At action 12, the entitlement server  210  enables cellular service for the second accessory device  150  based on the second eSIM and disables cellular service for the first accessory device  110  based on the first eSIM. 
       FIG. 3  illustrates a diagram  300  of an exemplary set of actions for transferring cellular service credentials for a set of one or more eSIMs from a first accessory device  110  to a second accessory device  150  via a primary device  120 . The first accessory device  110  can include multiple eSIMs, some of which are provided by different MNOs. The primary device  120  can include a combination of SIM(s)/eSIM(s) that are provided by multiple MNOs, where at least two different MNOs associated with the SIM(s)/eSIM(s) of the primary device  120  are also associated with eSIMs of the first accessory device  110 . The first accessory device  110  can include multiple eSIMs for which cellular service credentials could be transferred to the second accessory device  150  via the primary device  120 . In some embodiments, the first accessory device  110  includes an active eSIM, selected as indicated at action 1, and one or more inactive eSIMs. The first accessory device  110  can be unavailable, as indicated at action 2, during the process to configure cellular service for the second accessory device  150 . At action 3, the second accessory device  150  pairs with the primary device  120  to establish a local, secure connection between the second accessory device  150  and the primary device  120 . The primary device  120  may be used to configure the second accessory device  150 , e.g., as part of an initial configuration or as part of a restore process. At action 4, the primary device  120  requests status for multiple eSIMs of accessory devices, e.g., for the first accessory device  110 , that are linked with the primary device  120 . As the primary device  120  includes multiple SIM(s)/eSIM(s) that are associated with different MNOs, the primary device  120 , at action 4, submits multiple eSIM status requests, e.g., one eSIM status request to each of the different MNOs that are associated with the SIM(s)/eSIM(s) of the primary device  120 . The primary device  120  uses cellular service credentials associated with the SIM(s)/eSIM(s) installed in the primary device  120  to authenticate and communicate with associated entitlement servers  210  of the MNOs to obtain the status of the eSIMs for one or more accessory devices linked with the primary device  110 , including the first accessory device  110 . At action 5, entitlement servers  210  of the respective MNOs can send to the primary device  120 , responsive to receipt of the requests for eSIM status, eSIM status responses that include cellular service plan status information for one or more eSIMs of associated accessory wireless devices, which includes the first accessory device  110 . Status for one or more eSIMs of the first accessory device  110  can be provided in the eSIM status responses, and the eSIMs of the first accessory device  110  can be identified uniquely based on first eICCIDs included in the eSIM status response. At action 6, the primary device  120  presents information via a display or input/output of the primary device  120  that includes a list of cellular service plans that may be transferred to the second accessory device  150 . In some embodiments, indicators for one or more eSIMs that are available to transfer to the second accessory device  150  are presented, while any eSIMs that are not available to transfer are not indicated. In some embodiments, an indication of one or more particular eSIMs to transfer is provided, e.g., by indicating particular MSISDNs or other identifiers by which a user can determine which cellular service credentials may be transferred to the second accessory device  150 . In some embodiments, a most recently selected active eSIM of the first accessory device  110  (e.g., based on action 1) is indicated in the list of cellular service plans presented at action 6. In some embodiment, the most recently selected active eSIM of the first accessory device  110  is presented as a default cellular service plan to transfer to the second accessory device  150 . At action 7, the primary device  120  obtains an indication of which cellular service plans to transfer to the second accessory device  150 . A user may select a default cellular service plan, a cellular service plan other than the default cellular service plan, a set of two or more cellular service plans, or other combinations of cellular service plans to transfer. In some embodiments, the user indicates which of the multiple cellular service plans should be enabled as the active cellular service plan on the second accessory device  150 . At action 8, the primary device  120  sends, to entitlement servers  210  of respective MNOs, eSIM transfer requests that include one or more identifiers for the first accessory device  110  and one or more identifiers for the second accessory device  150 . In some embodiments, the one or more identifiers for the first accessory device  110  include first eICCIDs that specify first eSIMs of the first accessory device  110  and a first eUICC identifier (EID) that specifies the eUICC of the first accessory device  110 . In some embodiments, the one or more identifiers for the second accessory device include a second EID that specifies the eUICC of the second accessory device  110  and a second international mobile equipment identifier (IMEI) that specifies the second accessory device  110 . At action 9, the primary device  120  securely authenticates with each entitlement server  210  that a user of the first accessory device  110  and/or of the primary device  120  is authorized to transfer cellular service credentials for the specified first eSIMs from the first accessory device  110  to the second accessory device  150 . In some embodiments, the primary device  120  provides authentication using background processes that include previously stored carrier authentication tokens obtained by the first accessory device  110  and subsequently accessed by the primary device  120 . In some embodiments, the primary device  120  provides authentication by redirecting to web-sheet servers managed by the respective MNOs and by communicating information via web-sheet user interfaces with the respective web-sheet servers to demonstrate that a legitimate user of the first accessory device  110  and/or of the primary device  120  authorizes transfer of the cellular service credentials for the first eSIMs from the first accessory device  110  to the second accessory device  150 . At action 10, upon successful user authentication, the entitlement servers  210  send eSIM assignment messages to the primary device  120 . In some embodiments, the eSIM assignment messages include (i) second eICCIDs that specify second eSIMs to be installed in the second accessory device  150 , and (ii) network addresses for MNO servers, e.g., for SM-DP+ servers  220 . In some embodiments, the network addresses are URLs or FQDNs that the primary device  120  can use to access the SM-DP+ servers  220 . At action 11, the second accessory device  150  connects securely to the SM-DP+ servers  220  indicated in the eSIM assignment message and downloads securely the second eSIMs associated with the second eICCIDs from the SM-DP+ servers  220 . The primary device  120  can provide the URLs or FQDNs of the SM-DP+ servers  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ servers  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ servers  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 12, the second accessory device  150  activates a selected eSIM, e.g., one corresponding to a previously active eSIM of the first accessory device. At action 13, the second accessory device  150  sends a confirmation to the corresponding entitlement server  210  of the MNO associated with the activated eSIM to indicate successful installation of the eSIM from the corresponding SM-DP+ server  220 . At action 14, the entitlement server  210  enables cellular service for the second accessory device  150  based on the second eSIM installed and activated in the second accessory device  150  and disables cellular service associated with the first eSIM for the first accessory device  110 . 
       FIG. 4  illustrates a diagram  400  of an exemplary set of actions for transferring cellular service credentials for a most recently selected eSIM of a first accessory device  110  to a second accessory device  150  via a primary device  120 . The first accessory device  110  can include multiple eSIMs associated with different MNOs, and the primary device  120  can include multiple SIM(s)/eSIM(s) that are also associated with different MNOs. The primary device  120  can be aware of a most recently selected eSIM for the first accessory device  110 , as indicated by action 1. The selection may occur separate from configuring cellular service for the second accessory device  150 . As indicated at action 2, the first accessory device  110  may be unavailable during configuration of cellular service for the second accessory device  150 . At action 3, the second accessory device  150  pairs with the primary device  120  to establish a local, secure connection between the second accessory device  150  and the primary device  120 . The primary device  120  may be used to configure the second accessory device  150 , e.g., as part of an initial configuration or as part of a restore process. At action 4, the primary device  120  requests status for one or more eSIMs of accessory devices, e.g., for the first accessory device  110 , that are linked with the primary device  120 . The primary device  120  can use cellular service credentials associated with a SIM or eSIM installed in the primary device  120  to authenticate and communicate with an entitlement server  210  of the MNO. At action 5, the entitlement server  210  can send to the primary device  120 , responsive to receipt of the request for eSIM status, an eSIM status response that includes cellular service plan status information for one or more eSIMs of associated accessory wireless devices, which includes the first accessory device  110 . Status of an eSIM of the first accessory device  110  can be provided in the eSIM status response, and the eSIM of the first accessory device  110  can be identified uniquely based on an eICCID) included in the eSIM status response. At action 6, the primary device  120  presents information via a display or input/output of the primary device  120  that prompts a user to select whether to transfer an eSIM to the second accessory device  150 . In some embodiments, an indicator for the eSIM most recently selected by the first accessory device  110  and are available to transfer to the second accessory device  150  is presented, e.g., by indicating an MSISDN or other identifier by which a user can determine the eSIM to be transferred to the second accessory device  150 . At action 7, the primary device  120  obtains an indication to transfer the most recently selected eSIM to the second accessory device  150 . At action 8, the primary device  120  sends to the entitlement server  210  an eSIM transfer request that includes one or more identifiers for the first accessory device  110  and one or more identifiers for the second accessory device  150 . In some embodiments, the one or more identifiers for the first accessory device  110  include a first eICCID that specifies the first (most recently selected) eSIM of the first accessory device  110  and a first EID that specifies the eUICC of the first accessory device  110 . In some embodiments, the one or more identifiers for the second accessory device include a second EID that specifies the eUICC of the second accessory device  110  and a second IMEI that specifies the second accessory device  110 . At action 9, the primary device  120  securely authenticates that a user of the first accessory device  110  and/or of the primary device  120  is authorized to transfer cellular service credentials for the specified first eSIM from the first accessory device  110  to the second accessory device  150 . In some embodiments, the primary device  120  provides authentication using a background process that includes a previously stored carrier authentication token obtained by the first accessory device  110  and subsequently accessed by the primary device  120 . In some embodiments, the primary device  120  provides authentication by redirecting to a web-sheet server managed by the MNO associated with the first eSIM and by communicating information via a web-sheet user interface with the web-sheet server to demonstrate that a legitimate user of the first accessory device  110  and/or of the primary device  120  authorizes transfer of the cellular service credentials for the first eSIM from the first accessory device  110  to the second accessory device  150 . At action 10, upon successful user authentication, the entitlement server  210  sends an eSIM assignment message to the primary device  120 . In some embodiments, the eSIM assignment message includes (i) a second eICCID that specifies a second eSIM to be installed in the second accessory device  150 , and (ii) a network address for an MNO server, e.g., for an SM-DP+ server  220 . In some embodiments, the network address is a URL or a FQDN that the primary device  120  can use to access the SM-DP+ server  220 . At action 11, the second accessory device  150  connects securely to the SM-DP+ server  220  indicated in the eSIM assignment message and downloads securely the second eSIM associated with the second eICCID from the SM-DP+ server  220 . The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 12, the second accessory device  150  activates the second eSIM, which corresponds to the most recently selected (first) eSIM of the first accessory device. At action 13, the second accessory device  150  sends a confirmation to the corresponding entitlement server  210  of the MNO associated with the activated eSIM to indicate successful installation of the second eSIM from the corresponding SM-DP+ server  220 . At action 14, the entitlement server  210  enables cellular service for the second accessory device  150  based on the second eSIM installed and activated in the second accessory device  150  and disables cellular service associated with the first eSIM for the first accessory device  110 . 
       FIGS. 5A and 5B  illustrate diagrams  500 ,  520  of another exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150  via a primary device  120  that shares an MNO with the first accessory device  110 . The primary device  120  and the first accessory device  110 , from which the cellular service credentials will be transferred, shared a common MNO, with which the primary device  120  can authenticate and communicate using its own SIM/eSIM. The exemplary set of actions in  FIGS. 5A and 5B  provide an efficient “one-click transfer” procedure to move cellular service credentials from the first accessory device  110  to the second accessory device  150 . At action 1, the first accessory device  110  pairs with the primary device  120 . In some embodiments, during or associated with the pairing, the first accessory device  110  obtains or activates a first eSIM in an eUICC of the first accessory device  110  to allow access to cellular wireless services. In some embodiments, the first eSIM is identified by a unique first eICCID value but shares a common MSISDN value with a SIM/eSIM of the primary device  120 . In some embodiments, the first eSIM is associated with a distinct MSISDN value from those of the SIM(s)/eSIM(s) of the primary device  120 . The first eSIM of the first accessory device  110  and at least one SIM/eSIM of the primary device  120  share a common MNO. At action 2, the primary device  110  registers the MSISDN of the first accessory device  110  with an identification server  510 , which can be managed by a non-MNO third party and can associate a non-MNO user account with various devices, including the primary device  120  and the first accessory device  110 . The identification server  510  can be used to maintain a trust score for authenticating a user of a set of devices. The identification server  510  can use a history of a user, a history of a user&#39;s devices, and one or more associated user accounts to determine whether certain transactions require further authentication, e.g., via a login with an MNO web-sheet server, or whether a user can be authenticated for the transactions based on the trust score. Using a trust score evaluation for authentication can bypass additional steps to communicate with the MNO web-sheet server thereby shortening the process to transfer cellular service credentials, particularly during configuration or restoration of the second accessory device  150 . At action 3, the second accessory device  150  pairs with the primary device  120 . Initially (or as part of a restoration process), the second accessory device  150  can have no active eSIMs on the eUICC of the second accessory device  150 . As part of configuration or restoration of the second accessory device  150 , the primary device  120 , at action 4, can present options for configuring cellular service for the second accessory device  150 , e.g., as shown in diagram  100  of  FIG. 1 . The primary device  120  can display a prompt to determine whether a user seeks to transfer cellular service credentials from another device, e.g., from the first accessory device  110 , to the second accessory device  150 . At action 5, the primary device  120  obtains an indication via an input/output of the primary device  120  to transfer cellular service credentials for one or more eSIMs, e.g., the first eSIM, from the first accessory device  110  to the second accessory device  150 . At action 6, the primary device  120  performs an Extensible Authentication Protocol Authentication and Key Agreement (EAP-AKA) procedure to authenticate and establish a secure connection with an entitlement server  210  of an MNO associated with a SIM/eSIM of the primary device and also associated with the first eSIM of the first accessory device  110 . At action 7, the entitlement server  210  generates a nonce value and, at action 8, sends the nonce value to the primary device  120 . At action 9, the primary device  120  sends, to the identification server  510 , an authentication request (Get Signed Trust Flag) to obtain a trust score from the identification server  510 . The authentication request includes the MSISDN value of the primary device  120  (which in some embodiments, can be also shared with the first accessory device  110 ), the nonce provided by the entitlement server  210 , and a first IMEI value for the primary device  120 . The authentication request can be signed by the primary device  120  using a secure private key. At action 10, the identification server  510  can perform a security evaluation and determine a trust score based at least in part on information provided by the primary device  120 . In some embodiments, the primary device  120  provides an identity for an account maintained by the identification server  510  for a user of the primary device  120  and the first accessory device  110 . The identification server  510  can use information maintained by the identification server  510  and/or accessible to the identification server  510  to generate the trust score. Exemplary information includes a history of associates of the MSISDN or other credentials with the user, with the primary device  120 , and/or with the first accessory device  110 . In some embodiments, the identification server  510  queries additional servers (not shown) to obtain information to generate the trust score. Based on accessible information, the identification server  510  generates a trust flag. At action 11, the identification server  510  sends to the primary device a signed trust flag message, which includes the MSISDN value, the generated trust score, the nonce, and the first IMEI value for the primary device  120 . At action 12, the primary device  120  uses the signed trust flag message (and/or information contained therein) to authenticate with the entitlement server  210  for subsequent transfer of cellular service credentials from the first accessory device  110  to another device, e.g., to the second accessory device  150 . In some embodiments, the trust flag authentication proves to the entitlement server  210  that a user of the primary device  120  and the first accessory device  110  has authority to install, delete, and/or modify cellular service credentials for the first accessory device  110 , e.g., for transfer to the second accessory device  150 . At action 13, the entitlement server  210  validates the trust flag, and at action 14, provides an indication of the trust flag validation to the primary device  120 . Upon successful validation, the entitlement server  210  also provides, at action 14, an authentication token that the primary device  120  can use to authorize transfer of cellular service credentials from the first accessory device  110  for the first eSIM to the second accessory device  150 . At action 15, the primary device  120  sends an eSIM transfer request to the entitlement server  210 , the eSIM transfer request including a first eICCID identifier of the first eSIM of the first accessory device  110 , a first EID identifier of the eUICC of the first accessory device  110 , a second EID identifier of the eUICC of the second accessory device  150 , a second IMEI of the second accessory device  150 , and the authentication token obtained from the entitlement server  210 . At action 16, the entitlement server  210  submits an order to the SM-DP+server  220  to download an eSIM for the second accessory device  150 . At action 17, the entitlement server  210  further communicates a transfer message to an MNO backend server  530  to cause the cellular service account associated with the first eSIM for the first accessory device  110  to transfer to the second accessory device  150 . The transfer message can include the first eICCID of the first eSIM of the first accessory device  110  and a second eICCID for a second eSIM to be installed in the second accessory device  150 . At action 18, the SM-DP+server  220  confirms the download order to the entitlement server  210 . At action 19, the entitlement server  210  responds to the transfer request from the primary device  120  with an eSIM transfer response indicating approval for the cellular service credentials to be transferred from the first accessory device  110  to the second accessory device  150 . The eSIM transfer response can include the second EID of the second accessory device  150 , the second eICCID for the second eSIM to be installed in the second accessory device  150 , and a network address, e.g., a URL or FQDN for the SM-DP+ server  220  from which the second eSIM can be downloaded. At action 20, the second accessory device  150  downloads the second eSIM from the SM-DP+ server  220 . The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . 
       FIG. 6  illustrates a diagram  600  of an exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150  via a primary device  120  that does not share an MNO with the first accessory device  110 . As the primary device  120  does not include a SIM/eSIM with which to authenticate with an MNO server, e.g., entitlement server  210 , for a first eSIM of the first accessory device  110  that a user seeks to transfer to the second accessory device  150 , the primary device  120  uses the first accessory device  110  to authenticate and communicate with the applicable MNO servers  220  during the transfer process. At action 1, the first accessory device can be paired with the primary device  120  via a secure connection and can be available for communication with one or more MNO servers. At action 2, the primary device  120  pairs with the second accessory device  150 , e.g., as part of an initial configuration and/or restoration process of the second accessory device  150 . At action 3, the primary device  120  sends to the first accessory device  110  a request for status of eSIMs of the first accessory device  110 . In some embodiments, that first accessory device  110 , at action 4, sends a request for eSIM status to the entitlement server  210  of an MNO associated with one or more eSIMs of the first accessory device  110 . In some embodiments, the eSIMs of the first accessory device  110  are associated with two or more MNOs, and the first accessory device  110  can request status from respective entitlement servers  210  of one or more of the two or more MNOs. The first accessory device  110  can user cellular service credentials associated with the eSIMs stored in the eUICC of the first accessory device  110  to authenticate with the entitlement server(s)  210 . The entitlement server(s)  210  can respond, at action 5, with cellular service plan status information for the eSIMs of the first accessory device  110 . The eSIMs can be identified uniquely based on eICCID values included in the eSIM status response message from the entitlement server  210 . Communication with the entitlement server  210  at actions 4 and 5 by the first accessory device  110  can be optional, in some embodiments. At action 6, the first accessory device  110  responds to the request by providing the status of eSIMs of the first accessory device  110  to the primary device  120 . At action 7, the primary device  120  presents information via a display or input/output of the primary device  120  that prompts a user to select whether to transfer one or more eSIMs to the second accessory device  150 . In some embodiments, indicators for eSIMs that are available to transfer to the second accessory device  150  are presented, while any eSIMs that are not available to transfer are not indicated. In some embodiments, an indication of a particular eSIM to transfer is provided, e.g., by indicating a particular MSISDN or other identifier by which a user can determine which cellular service credentials may be transferred to the second accessory device  150 . At action 8, the primary device  120  obtains an indication to transfer at least one eSIM of the one or more eSIMs available to transfer to the second accessory device  150 . At action 9, the primary device  120  sends a message to the first accessory device  110  to initiate transfer of the indicated eSIM(s) from the first accessory device  110  to the second accessory device  150 . The message can include a second EID that uniquely identifies an eUICC of the second accessory device  150  and a second IMEI that uniquely identifies the second accessory device  150 . At action 10, the first accessory device  110  sends to the entitlement server  210  an eSIM transfer request that includes one or more identifiers for the first accessory device  110  and one or more identifiers for the second accessory device  150 . In some embodiments, the one or more identifiers for the first accessory device  110  include a first eICCID that specifies a first eSIM of the first accessory device  110  and a first EID that specifies the eUICC of the first accessory device  110 . In some embodiments, the one or more identifiers for the second accessory device include a second EID that specifies the eUICC of the second accessory device  110  and a second IMEI that specifies the second accessory device  110 . At action 11, the first accessory device  110  securely authenticates that a user of the first accessory device  110  and/or of the primary device  120  is authorized to transfer cellular service credentials for the specified first eSIM from the first accessory device  110  to the second accessory device  150 . In some embodiments, the first accessory device  110  provides authentication using a background process that includes a previously stored carrier authentication token obtained by the first accessory device  110 . In some embodiments, the first accessory device  110  provides authentication by redirecting to a web-sheet server managed by the MNO and by communicating information via a web-sheet user interface with the web-sheet server to demonstrate that a legitimate user of the first accessory device  110  and/or of the primary device  120  authorizes transfer of the cellular service credentials for the first eSIM from the first accessory device  110  to the second accessory device  150 . At action 12, upon successful user authentication, the entitlement server  210  sends an eSIM assignment message to the first accessory device  110 . In some embodiments, the eSIM assignment message includes (i) a second eICCID that specifies a second eSIM to be installed in the second accessory device  150 , and (ii) a network address for an MNO server, e.g., for an SM-DP+ server  220 . In some embodiments, the network address is a URL or FQDN that the primary device  120  can use to access the SM-DP+ server  220 . At action 13, the first accessory device  110  provides a transfer result message to the primary device  120 , the transfer result message including the second eICCID that specifies the second eSIM to be downloaded to the second accessory device  150  and the network address, e.g., a URL or FQDN, for the SM-DP+ server  220  from which to download the second eSIM for the second accessory device  150 . At action 14, the second accessory device  150  connects securely to the SM-DP+ server  220  indicated in the transfer result message and downloads securely the second eSIM associated with the second eICCID from the SM-DP+ server  220 . The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 15, the second accessory device  150  sends a confirmation to the entitlement server  210  of the MNO to indicate successful installation of the second eSIM from the SM-DP+ server  220 . At action 16, the entitlement server  210  enables cellular service for the second accessory device  150  based on the second eSIM and disables cellular service for the first accessory device  110  based on the first eSIM. 
       FIG. 7  illustrates a diagram  700  of another exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150  via a primary device  120  that does not share an MNO with the first accessory device  110 . Unlike the scenario illustrated by  FIG. 6 , the first accessory device  110  may be not available during the configuration of the second accessory device  150  by the primary device  120 . As with the scenario of  FIG. 7 , the primary device  120  does not include a SIM/eSIM with which to authenticate with an MNO server, e.g., entitlement server  210 , for a first eSIM of the first accessory device  110  that a user seeks to transfer to the second accessory device  150 , the primary device  120  uses the first accessory device  110  to authenticate and communicate with the applicable MNO servers  220  during the transfer process. Instead, the primary device  120  can use an authentication token previously obtained by the first accessory device  110  and accessible to the primary device  120 . At action 1, the first accessory device  110  obtains one or more authentication tokens for one or more eSIMs from respective entitlement servers  210 , where the authentication tokens can be used at a future time for authentication with the entitlement servers  210 . At action 2, the first accessory device uploads one or more of the obtained authentication tokens to a third-part cloud network based serer  710  for secure storage and subsequent retrieval by the first accessory device  110  or by another associated device, e.g., the primary device  120 . As indicated at action 3, the first accessory device  110  can be not available for participation during transfer of one or more eSIMs from the first accessory device  110  to the second accessory device  150 . At action 4, the second accessory device  150  pairs with the primary device, e.g., as part of a configuration or restoration process. At action 5, the primary device obtains one or more authentication tokens from secure network-based cloud storage, e.g., from the third-party cloud server  710 . In some embodiments, the primary device  120  and the first accessory device  110  are associated with a common non-MNO user account, e.g., with an Apple ID account, and the primary device  120  authenticates with the third-party cloud server  710  based on credentials associated with the non-MNO user account. At action 6, the primary device  120  sends a request for eSIM status to the entitlement server  210  of an MNO associated with one or more eSIMs of the first accessory device  110 . In some embodiments, the eSIMs of the first accessory device  110  are associated with two or more MNOs, and the primary device  120  can request status from respective entitlement servers  210  of one or more of the two or more MNOs. The primary device  120  can use one or more of the authentication tokens obtained from the third-party cloud server  710  (indicated in  FIG. 7  as eSIM tokens) to authenticate with the entitlement server(s)  210 . The eSIM status request(s) can also include a first EID for the eUICC of the first accessory device  110  and a first IMEI value for the first accessory device  110 . The entitlement server  210  can respond, at action 7, with cellular service plan status information for one or more eSIMs of the first accessory device  110 . The one or more eSIMs can be identified uniquely based on eICCID values included in the eSIM status response message from the entitlement server  210 . At action 8, the primary device  120  presents information via a display or input/output of the primary device  120  that prompts a user to select whether to transfer one or more eSIMs to the second accessory device  150 . In some embodiments, indicators for eSIMs that are available to transfer to the second accessory device  150  are presented, while any eSIMs that are not available to transfer are not indicated. In some embodiments, an indication of a particular eSIM to transfer is provided, e.g., by indicating a particular MSISDN or other identifier by which a user can determine which cellular service credentials may be transferred to the second accessory device  150 . At action 9, the primary device  120  obtains an indication to transfer at least one eSIM of the one or more eSIMs available to transfer to the second accessory device  150 . At action 10, the primary device  120  sends to the entitlement server  210  an eSIM transfer request that includes an eSIM token (for authentication), one or more identifiers for the first accessory device  110  and one or more identifiers for the second accessory device  150 . In some embodiments, the one or more identifiers for the first accessory device  110  include a first eICCID that specifies a first eSIM of the first accessory device  110  and a first EID that specifies the eUICC of the first accessory device  110 . In some embodiments, the one or more identifiers for the second accessory device include a second EID that specifies the eUICC of the second accessory device  110  and a second IMEI that specifies the second accessory device  110 . At action 11, optionally, the primary device  120  securely authenticates that a user of the first accessory device  110  and/or of the primary device  120  is authorized to transfer cellular service credentials for the specified first eSIM from the first accessory device  110  to the second accessory device  150 . In some embodiments, the primary device  120  provides authentication using a background process that includes a previously stored carrier authentication token obtained by the primary device  120 . In some embodiments, the primary device  120  provides authentication by redirecting to a web-sheet server managed by an applicable MNO and by communicating information via a web-sheet user interface with the web-sheet server to demonstrate that a legitimate user of the first accessory device  110  and/or of the primary device  120  authorizes transfer of the cellular service credentials for the first eSIM from the first accessory device  110  to the second accessory device  150 . At action 12, the entitlement server  210  sends an eSIM assignment message to the primary device  120 , the eSIM assignment message including (i) a second eICCID that specifies a second eSIM to be installed in the second accessory device  150 , and (ii) a network address for an MNO server, e.g., for an SM-DP+ server  220 . In some embodiments, the network address is a URL or FQDN that the primary device  120  can use to access the SM-DP+ server  220 . At action 13, the second accessory device  150  connects securely to the SM-DP+ server  220  indicated in the transfer result message and downloads securely the second eSIM associated with the second eICCID from the SM-DP+ server  220 . The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 14, the second accessory device  150  sends a confirmation to the entitlement server  210  of the MNO to indicate successful installation of the second eSIM from the SM-DP+ server  220 . At action 15, the entitlement server  210  enables cellular service for the second accessory device  150  based on the second eSIM and disables cellular service for the first accessory device  110  based on the first eSIM. 
       FIGS. 8A, 8B, and 8C  illustrate diagrams  800 ,  810 ,  820  of another exemplary set of actions for transferring cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150  via a primary device  120  that shares an MNO with the first accessory device  110 . The first accessory device  110  was previously (or is currently) associated with the primary device  120  but is unavailable to participate in the transfer process. In some embodiments, the primary device  120  and the first accessory device  110  share a common cellular service account managed by the MNO. In some embodiments, the primary device  120  and the first accessory device  110  use separate cellular service accounts that are linked together and billed to a common user. In some embodiments, the primary device  120  and the first accessory device  110  use an identical mobile station international subscriber directory number (MSISDN). In some embodiments, the primary device  120  and the first accessory device  110  use distinct MSISDNs. At action 1, the second accessory device  150  pairs with the primary device  120  to establish a local, secure connection between the second accessory device  150  and the primary device  120 . The primary device  120  may be used to configure the second accessory device  150 , e.g., as part of an initial configuration or as part of a restore process. At action 2, the primary device  120  determines whether MNO backend servers support transfer of one or more eSIMs from the first accessory device  110  to the second accessory device  150 . When transfer is not available, at action 3, the second accessory device  150  presents via a display an indication that transfer of cellular service credentials is unavailable. When transfer is available, at action 4, the primary device  120  sends an authentication/entitlement message to the entitlement server  210  to obtain information regarding transferability of one or more eSIMs from the first accessory device  110  to the second accessory device  150 . At action 5, the primary device  120  receives an authentication/entitlement response that includes information regarding transferability of the one or more eSIMs and an authentication and key agreement (AKA) token. At action 6, the primary device  120  determines based at least in part on information received from the entitlement server  210  whether transfer of one or more eSIMs are supported. When transfer is not supported, at action 7, the second accessory device  150  presents via a display an indication that transfer of cellular service credentials is unavailable. When transfer is supported, at action 8, the primary device  120  requests status for one or more eSIMs of accessory devices, e.g., for the first accessory device  110 , that are linked with the primary device  120 . The primary device  120  can use cellular service credentials associated with a SIM or eSIM installed in the primary device  120  to authenticate and communicate with an entitlement server  210  of the MNO. In some embodiments, the eSIM status request can include an ICCID for a SIM/eSIM of the primary device  120 . At action 9, the entitlement server  210  determines status for one or more eSIMs of one or more accessory devices that are associated with the primary device  120 , which can include the first accessory device  110 . At action 10, the entitlement server  210  can send to the primary device  120 , responsive to receipt of the request for eSIM status, an eSIM status response message that includes cellular service plan status information for one or more eSIMs of associated accessory wireless devices, which includes the first accessory device  110 . In some embodiments, the eSIMs, for which status is provided, can be uniquely identified by eICCID values included in the eSIM status response message. At action 11, the primary device  120  determines whether there are one or more cellular service plans for which associated cellular service credentials can be transferred to the second accessory device  150 . When no cellular service plans can be transferred, at action 12, the second accessory device  150  presents via a display an indication that transfer of cellular service credentials is unavailable. When at least transferable cellular service plan is available, at action 13, the primary device  120  presents information via a display or input/output of the primary device  120  that prompts a user to select whether to transfer one or more eSIMs to the second accessory device  150 . In some embodiments, indicators for eSIMs that are available to transfer to the second accessory device  150  are presented, while any eSIMs that are not available to transfer are not indicated. In some embodiments, an indication of a particular eSIM to transfer is provided, e.g., by indicating a particular MSISDN or other identifier by which a user can determine which cellular service credentials may be transferred to the second accessory device  150 . At action 14, the primary device  120  obtains an indication to transfer at least one eSIM of the one or more eSIMs available to transfer to the second accessory device  150 . At action 15, the primary device  120  sends to the entitlement server  210  an authentication message that includes the AKA token received at action 5 and a request for a carrier authorization nonce from the entitlement server  210 . At action 16, the entitlement server  210  responds with a nonce, when authentication with the AKA token succeeds, or a failure indication, when authentication with the AKA token fails. At action 17, the primary device  120  determines whether a nonce was received, and when the nonce is received, at action 18, the primary device  120  sends a message to the entitlement server  210  that includes the previously obtained AKA token and a signed Trust Flag message to authenticate a user of the primary device  120  and the first accessory device  110  for transferring cellular service credentials from the first accessory device  110  to the second accessory device  150 . At action 19, the entitlement server  210  responds to the message with an authentication token or a failure indication. At action 20, the primary device determines whether an authentication token was received. At action 21, the primary device  21  sends a request to transfer cellular service credentials for at least one eSIM of the first accessory device  110  to the second accessory device  150 . The request includes a previously obtained AKA token and when available the authentication token. The request also includes a first EID that specifies the eUICC of the first accessory device  110 , and a second EID that specifies an eUICC of the second accessory device  150 . At action 22, the entitlement server  210  obtains, from an SM-DP+ server  220 , an eICCID that identifies a second eSIM to install on the eUICC of the second accessory device  150  specified by the second EID. At action 23, the entitlement server  210  sends a transfer message that indicates success to transfer cellular service credentials for the first eSIM of the first accessory device  110  to the second eSIM (yet to be installed) of the second accessory device  150 . The transfer message includes, when authentication using the Trust Flag was previously successful (and the authentication token was provided at action 19, (i) an eICCID value that specifies the second eSIM and (ii) a network address for the SM-DP+ server  220  from which to download the second eSIM. Alternatively, when the Trust Flag was not successful (and a failure message was provided at action 19), the entitlement server  210  provides a URL for a web-sheet server with which the primary device can authenticate, e.g., using a web-sheet interface, and subsequently execute a JavaScript callback procedure to obtain the transfer information. At action 24, the primary device determines whether a transfer URL was provided at action 23. When no transfer URL was provided (indicating additional authentication via a web-sheet server is not required), the primary device  120  provides to the second accessory device  150  a transfer information message that includes, in some embodiments, a URL or FQDN for the SM-DP+ server  220  and a status of one or more eSIMs. When a transfer URL was provided (indicating additional authentication is required), the primary device  120 , at actions 26 and 27 executes an MNO web-sheet server procedure (connecting based on the provided transfer URL) and subsequently executes a JavaScript callback process to further authenticate a user with the MNO for transfer of the cellular service credentials. After the MNO web-sheet procedure of action 26 and as part of the JavaScript callback procedure of action 27, the primary device obtains the (i) eICCID value that specifies the second eSIM and (ii) the network address for the SM-DP+ server  220  from which to download the second eSIM. At action 28, the second accessory device  150  downloads from the SM-DP+ server  220  the second eSIM. The primary device  120  can provide the URL or FQDN of the SM-DP+ server  220  to the second accessory device  150 . In some embodiments, the second accessory device  150  connects directly to the SM-DP+ server  220  via a non-cellular access connection. In some embodiments, the second accessory device  150  connects to the SM-DP+ server  220  via a cellular (or non-cellular) access connection established by the primary device  120 , where the primary device  120  acts as a data conduit for the second accessory device  150 . At action 29, the primary device  120  provides to the entitlement server  210  a status of installation of the second eSIM on the eUICC of the second accessory device  150 . The status can include the second EID of the eUICC of the second accessory device. At action 30, the entitlement server  210  provides an accessory device subscription update message to the MNO backend server  350 , the message indicating that the eICCID value of the second eSIM installed on the eUICC of the second accessory device  150  should be added to the subscription, while the eICCID value of the first eSIM previously installed on the eUICC of the first accessory device  110  should be removed. At action 31, the entitlement server  210  provides to the primary device  120  a status message that indicates that the second eSIM installed on the eUICC of the second accessory device  150  is active. At action 32, the second accessory device can attach to a 3GPP radio access network using the cellular service credentials of the second eSIM installed on the eUICC of the second accessory device  150 . 
       FIG. 9  illustrates a diagram  900  of an exemplary detailed message flow for secure authentication and transfer of cellular service credentials for an eSIM from an existing device  910  to a new device  920 . At action 1, the existing device  910  registers an MSISDN associated with cellular wireless service for the existing device  910  with a third-party network-based cloud server  710 . In some embodiments, the third-party cloud server  710  is an identity services (IDS) server maintained by a third-party other than a mobile network operator (MNO) that can communicate with network-based servers of the MNO with which cellular wireless service is to be established for a new device  920 . The third-party cloud server  710  can provide information that assists with authentication by MNO network-based servers to validate providing cellular wireless service to the new device  920 . At action 2, the existing device  910  performs an EAP-AKA procedure with an entitlement server  210  of an MNO to establish a secure communication link between the existing device  910  and the entitlement server  210 . At action 3, the existing device  910  initiates authentication with the entitlement server  210 , which responds to the existing device  910 , at action 5, with a nonce generated by the entitlement server  210  at action 4. At action 6, the existing device  910  sends an authentication request (Get Authentication Token) to the third-part cloud server  710  to obtain a trust score from the third-part cloud server  710 . The authentication request can be signed by the existing device  910  and can include one or more unique credentials associated with the existing device  910 , such as an IMSI, an MSISDN, an IMEI, and/or an MEID, and the nonce previously received from the entitlement server  210 . At action 7, the third-part cloud server  710  performs a security validation and calculates a trust score based at least in part on information provided by the existing device  910 . In some embodiments, the existing device  910  provides an identity for an account maintained by the third-part cloud server  710  for a user of the existing device  910 . The third-part cloud server  710  can use additional information maintained by the third-part cloud server  710  and/or accessible to the third-part cloud server  710  to generate the trust score. Examples of additional information include a history of associations of the MSISDN (of the existing device) or other credentials with the user and/or with the existing device  910 . In some embodiments, the third-part cloud server  710  can query further servers (not shown) in order to obtain further information to generate the trust score. Based on the information, the third-part cloud server  710  generates the trust score. At action 8, the third-party cloud server  710  can reply to the existing device  910  with a signed message that includes the generated trust score. The signed message from the third-party cloud server  710  can also include the previously supplied credentials, e.g., the IMSI, the MSISDN, the IMEI, and/or the MEID, and the previously received nonce. The signed message from the third-party cloud server  710  can be signed by the entitlement server  210 . At action 9, the existing device  910  can send a pre-flight request for security validation to the entitlement server  210 . The pre-flight request can include the information provided by the third-part cloud server  710  including the trust score, credentials, and nonce as signed by the entitlement server  210 . The pre-flight request can also include the nonce signed by the eUICC of the existing device  910 . In response to the pre-flight request, the entitlement server  210  can perform a security validation procedure, at action 10, and, at action 11, return a result based on the security validation procedure together with a carrier token, when the entitlement server  210  authenticates the user for establishing cellular wireless service for the new device  920 . In some embodiments, the entitlement server  210  can use the trust score supplied by the third-part cloud server  710  as part of the security validation procedure to determine whether to allow the new device  920  to access cellular wireless services. In some embodiments, the new device  920  can be added to an existing wireless service account with which the existing device  910  is associated. In some embodiments, the new device  920  replaces another device (not shown) that is associated with the existing device  910 . After receiving the carrier token and result of the security validation, the existing device  910 , at action 12, prompts the user to initiate an account transfer, e.g., a one-click transfer of a previously established user account from a previous device (not shown) to the new device  920 . Responsive to an indication from the user to perform the account transfer, the existing device  110 , at  212 , sends a swap account request to the entitlement server  130 . The swap account request can include the carrier token obtained from the entitlement server as well as a set of unique identifiers for the previous device (not shown) and/or for the new device  920 , e.g., one or more of: an old eICCID, a SIM (4FF) integrated circuit card identifier (ICCID), an old EID, and/or a new EID. The entitlement server  210 , at action 14, can provide a download order message to the SM-DP+ server  220 , and receive a confirmation of the requested order at action 16. At action 15, the entitlement server  210  can also provide a swap account instruction to a backend server  350  to move a previously established user account from the previous (old) device to the new device  920 . The swap account instruction can include unique identifiers, including an old eICCID, associated with an eSIM of the previous (old) device, and a new eICCID, associated with an eSIM for the new device  920 . The entitlement server  210  can verify the carrier token obtained from the existing device  910  and can respond, at action 17, with additional credentials and/or information, e.g., an EID, an FQDN, and the new eICCID. After receiving the response from the entitlement server  210 , the existing device  910 , at action 18 can provide a communication conduit for installation and/or activation of an eSIM from a network-based subscription management server, e.g., the SM-DP+ server  220 , to the new device  920 . 
       FIG. 10  illustrates a flowchart  1000  of an exemplary method performed by a primary device  120  to transfer cellular service credentials for an eSIM from a first accessory device  110  to a second accessory device  150 . At  1002 , the primary device  120  pairs with the second accessory device  150 . At  1004 , the primary device  120  establishes a secure connection with a first MNO server, e.g., entitlement server  210 . At  1006 , the primary device  120  obtains, via the secure connection from the first MNO server, cellular service plan status for a first eSIM of the first accessory device  110 . At  1008 , the primary device  120  sends to the first MNO server a request to transfer cellular service credentials for the first eSIM to the second accessory device  150 . At  1010 , the primary device  120  receives from the first MNO server an assignment of a second eSIM for the second accessory device  150 . At  1012 , the primary device  120  causes the second accessory device  150  to download the second eSIM from a second MNO server, e.g., SM-DP+ server  220 . At  1014 , the primary device  120  sends to the first MNO server confirmation of the downloading of the second eSIM to the second accessory device  150 . In some embodiments, the second accessory device  150  downloads the second eSIM directly from the second MNO server via a non-cellular access connection. In some embodiments, the second accessory device  150  downloads the second eSIM via a cellular (or non-cellular) access connection established the primary device  120 . In some embodiments, the primary device  120  provides a data conduit by which the second accessory device  150  can download the second eSIM from the second MNO server. 
     In some embodiments, the first MNO server, after receipt of the confirmation, enables cellular service associated with the second eSIM for the second accessory device  150  and disables cellular service associated with the first eSIM for the first accessory device  110 . In some embodiments, the method further includes the primary device  120  ( i ) presenting an option to transfer cellular service credentials from the first accessory device  110  to the second accessory device  150 , and (ii) obtaining an indication to transfer the cellular service credentials to the second accessory device  150 , where the primary device  120  sends the request to the first MNO server to transfer the cellular service credentials responsive to receipt of the indication. In some embodiments, the first MNO server is an entitlement server, and the primary device  120  authenticates with the first MNO server to establish the secure connection based on a SIM or eSIM installed in the primary device  120 . In some embodiments, the SIM or eSIM of the primary device  120  and the first eSIM of the first accessory device  110  share a common MSISDN. In some embodiments, the SIM or eSIM of the primary device  120  and the first eSIM of the first accessory device  110  have distinct MSISDNs. In some embodiments the request to transfer the cellular service credentials for the first eSIM includes (i) a first eSIM identifier and a first hardware identifier of the first accessory device  110 , and (ii) at least one hardware identifier of the second accessory device  150 . In some embodiments, the at least one hardware identifier of the second accessory device includes an eUICC identifier (EID) and an IMEI of the second accessory device  150 . In some embodiments, the primary device provides to the first MNO server user authentication for a registered user of the first accessory device  110 . In some embodiments, the user authentication is provided based on a trust score managed by a third-party server, e.g., third-party cloud server  710 . In some embodiments, the user authentication is provided based on interaction with a web-sheet server managed by an MNO associated with the first MNO server. In some embodiments, the assignment of the second eSIM for the second accessory device  150  includes a second SIM identifier and a network address for the second MNO server, e.g., for the SM-DP+ server  220 . In some embodiments, the network address is a URL or a FQDN for the second MNO server. In some embodiments, the method further includes the primary device  120 : (i) obtaining, from one or more MNO servers including the first MNO server, cellular service plan statuses for multiple eSIMs of the first accessory device  110 , where the multiple eSIMs includes the first eSIM, (ii) presenting a list of transferable cellular service plans, and (iii) obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for the first eSIM to the second accessory device  150 . In some embodiments, the method further includes the primary device  120 : (iv) obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for at least one other eSIM of the multiple eSIMs to the second accessory device  150 , and (v) downloading, from an MNO server associated with the one other eSIM, a third eSIM to the second accessory device  150 . In some embodiments, the second eSIM and the third eSIM are associated with different MNOs. 
     Representative Embodiments 
     A method for transferring cellular service credentials from a first accessory device associated with a primary device to a second accessory device can include a primary device: i) pairing the primary device with the second accessory device; ii) establishing a secure connection with a first mobile network operator (MNO) server; iii) obtaining, via the secure connection from the first MNO server, cellular service plan status for a first electronic subscriber identity module (eSIM) of the first accessory device; iv) sending, to the first MNO server, a request to transfer cellular service credentials for the first eSIM to the second accessory device; v) receiving, from the first MNO server, an assignment of a second eSIM for the second accessory device; vi) causing the second accessory device to download the second eSIM from a second MNO server; and vii) sending, to the first MNO server, confirmation of the downloading of the second eSIM to the second accessory device, where the first MNO server, after receipt of the confirmation, enables cellular service associated with the second eSIM for the second accessory device and disables cellular service associated with the first eSIM for the first accessory device. 
     In some embodiments, the method for transferring cellular service credentials from the first accessory device associated with the primary device to the second accessory device can further include the primary device: i) presenting an option to transfer cellular service credentials from the first accessory device to the second accessory device, and ii) obtaining an indication to transfer the cellular service credentials to the second accessory device, where the primary device sends the request to the first MNO server to transfer the cellular service credentials responsive to receipt of the indication. In some embodiments, the first MNO server is an entitlement server, and the primary device authenticates with the first MNO server to establish the secure connection based on a SIM or eSIM installed in the primary device. In some embodiments, the SIM or eSIM of the primary device and the first eSIM of the first accessory device share a common mobile station international subscriber directory number (MSISDN). In some embodiments, the SIM or eSIM of the primary device and the first eSIM of the first accessory device have distinct mobile station international subscriber directory numbers (MSISDNs). In some embodiments, the request to transfer the cellular service credentials for the first eSIM includes: i) a first eSIM identifier and a first hardware identifier of the first accessory device, and ii) at least one hardware identifier of the second accessory device. In some embodiments, the at least one hardware identifier of the second accessory device includes an embedded universal integrated service circuit card (eUICC) identifier and an international mobile equipment identifier (IMEI) of the second accessory device. In some embodiments, the method further includes the primary device providing, to the first MNO server, user authentication for a registered user of the first accessory device. In some embodiments, the user authentication is provided based on a trust score managed by a third-party server. In some embodiments, the user authentication is provided based on interaction with a web-sheet server managed by an MNO associated with the first MNO server. In some embodiments, the assignment of the second eSIM for the second accessory device includes a second SIM identifier and a network address for the second MNO server. In some embodiments, the network address includes a universal resource locator (URL) or a fully quality domain name (FQDN) for the second MNO server. 
     In some embodiments, the method for transferring cellular service credentials from the first accessory device associated with the primary device to the second accessory device can further include the primary device: i) obtaining, from one or more MNO servers including the first MNO server, cellular service plan statuses for multiple eSIMs of the first accessory device, where the multiple eSIMs includes the first eSIM, ii) presenting a list of transferable cellular service plans; and iii) obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for the first eSIM to the second accessory device. In some embodiments, the method further includes the primary device i) obtaining, responsive to presentation of the list, an indication to transfer cellular service credentials for at least one other eSIM of the multiple eSIMs to the second accessory device, and ii) downloading, from an MNO server associated with the one other eSIM, a third eSIM to the second accessory device. In some embodiments, the second eSIM and the third eSIM are associated with different MNOs. In some embodiments, the primary device provides, to the second accessory device, the network address for the second MNO server. In some embodiments, the second accessory device connects to the second MNO server directly via a non-cellular access connection to download the second eSIM. In some embodiments, the second accessory device connects to the second MNO server via a cellular access connection established by the primary device. 
     In some embodiments, an apparatus is configured for operation in a primary device and includes one or more processors communicatively coupled to a memory storing instructions that, when executed by the one or processors, cause the primary device to perform a method to transfer cellular service credentials from a first accessory device associated with the primary device to a second accessory device by performing a set of actions as described herein. 
     In some embodiments, a primary device includes wireless circuitry, including one or more antennas, the wireless circuitry coupled to one or processors communicatively coupled to a memory storing instructions that, when executed by the one or processors, cause the primary device to perform a method to transfer cellular service credentials from a first accessory device associated with the primary device to a second accessory device by performing a set of actions as described herein. 
     Representative Exemplary Apparatus 
       FIG. 11  illustrates in block diagram format an exemplary computing device  1100  that can be used to implement the various components and techniques described herein, according to some embodiments. In particular, the detailed view of the exemplary computing device  1100  illustrates various components that can be included in the first accessory device  110 , the second accessory device  150 , and/or the primary device  120 . As shown in  FIG. 11 , the computing device  1100  can include a processor  1102  that represents a microprocessor or controller for controlling the overall operation of computing device  1100 . In some embodiments, the computing device  1100  can also include a user input device  1108  that allows a user of the computing device  1100  to interact with the computing device  1100 . For example, in some embodiments, the user input device  1108  can take a variety of forms, such as a button, keypad, dial, touch screen, audio input interface, visual/image capture input interface, input in the form of sensor data, etc. In some embodiments, the computing device  1100  can include a display  1110  (screen display) that can be controlled by the processor  1102  to display information to the user. A data bus  1116  can facilitate data transfer between at least a storage device  1140 , the processor  1102 , and a controller  1113 . The controller  1113  can be used to interface with and control different equipment through an equipment control bus  1114 . The computing device  1100  can also include a network/bus interface  1111  that couples to a data link  1112 . In the case of a wireless connection, the network/bus interface  1111  can include wireless circuitry, such as a wireless transceiver and/or baseband processor. The computing device  1100  can also include a secure element  1150 . The secure element  1150  can include an eUICC for the first and second accessory devices  110 ,  150  (and/or a UICC for the primary device  120 ). 
     The computing device  1100  also includes a storage device  1140 , which can include a single storage or a plurality of storage devices and a storage management module that manages one or more partitions within the storage device  1140 . In some embodiments, storage device  1140  can include flash memory, semiconductor (solid state) memory or the like. The computing device  1100  can also include a Random-Access Memory (RAM)  1120  and a Read-Only Memory (ROM)  1122 . The ROM  1122  can store programs, utilities or processes to be executed in a non-volatile manner. The RAM  1120  can provide volatile data storage, and stores instructions related to the operation of the computing device  1100 . 
     Wireless Terminology 
     In accordance with various embodiments described herein, the terms “wireless communication device,” “wireless device,” “mobile device,” “mobile station,” and “user equipment” (UE) may be used interchangeably herein to describe one or more common consumer electronic devices that may be capable of performing procedures associated with various embodiments of the disclosure. In accordance with various implementations, any one of these consumer electronic devices may relate to: a cellular phone or a smart phone, a tablet computer, a laptop computer, a notebook computer, a personal computer, a netbook computer, a media player device, an electronic book device, a MiFi® device, a wearable computing device, as well as any other type of electronic computing device having wireless communication capability that can include communication via one or more wireless communication protocols such as used for communication on: a wireless wide area network (WWAN), a wireless metro area network (WMAN) a wireless local area network (WLAN), a wireless personal area network (WPAN), a near field communication (NFC), a cellular wireless network, a fourth generation (4G) LTE, LTE Advanced (LTE-A), and/or 5G or other present or future developed advanced cellular wireless networks. 
     The wireless communication device, in some embodiments, can also operate as part of a wireless communication system, which can include a set of client devices, which can also be referred to as stations, client wireless devices, or client wireless communication devices, interconnected to an access point (AP), e.g., as part of a WLAN, and/or to each other, e.g., as part of a WPAN and/or an “ad hoc” wireless network. In some embodiments, the client device can be any wireless communication device that is capable of communicating via a WLAN technology, e.g., in accordance with a wireless local area network communication protocol. In some embodiments, the WLAN technology can include a Wi-Fi (or more generically a WLAN) wireless communication subsystem or radio, the Wi-Fi radio can implement an Institute of Electrical and Electronics Engineers (IEEE) 802.11 technology, such as one or more of: IEEE 802.11a; IEEE 802.11b; IEEE 802.11g; IEEE 802.11-2007; IEEE 802.11n; IEEE 802.11-2012; IEEE 802.11ac; or other present or future developed IEEE 802.11 technologies. 
     Additionally, it should be understood that the UEs described herein may be configured as multi-mode wireless communication devices that are also capable of communicating via different third generation (3G) and/or second generation (2G) RATs. In these scenarios, a multi-mode user equipment (UE) can be configured to prefer attachment to LTE networks offering faster data rate throughput, as compared to other 3G legacy networks offering lower data rate throughputs. For instance, in some implementations, a multi-mode UE may be configured to fall back to a 3G legacy network, e.g., an Evolved High Speed Packet Access (HSPA+) network or a Code Division Multiple Access (CDMA) 2000 Evolution-Data Only (EV-DO) network, when LTE and LTE-A networks are otherwise unavailable. 
     It is well understood that the use of personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users. In particular, personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users. 
     The various aspects, embodiments, implementations or features of the described embodiments can be used separately or in any combination. Various aspects of the described embodiments can be implemented by software, hardware or a combination of hardware and software. The described embodiments can also be embodied as computer readable code on a non-transitory computer readable medium. The non-transitory computer readable medium is any data storage device that can store data which can thereafter be read by a computer system. Examples of the non-transitory computer readable medium include read-only memory, random-access memory, CD-ROMs, HDDs, DVDs, magnetic tape, and optical data storage devices. The non-transitory computer readable medium can also be distributed over network-coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. 
     The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the described embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the described embodiments. Thus, the foregoing descriptions of specific embodiments are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the described embodiments to the precise forms disclosed. It will be apparent to one of ordinary skill in the art that many modifications and variations are possible in view of the above teachings.

Metadata:
Filing Date: 20200824
Publication Date: 20221004
Grant Date: 20221004
Priority Date: 20190909
Inventors: GOYAL, Anish Kumar
YU, CHENZHI
GONZALEZ, FRANCISCO J.
LI, LI
CHAUGULE, RAJ S.
MALTHANKAR, ROHAN C.
TOUATI, SAMY
Assignee: APPLE INC
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Family ID: 74850244