Bluetooth eUICC intelligent card system

Abstract

The utility model discloses a Bluetooth eUICC intelligent card system. The Bluetooth eUICC intelligent card system comprises a Bluetooth unit, an interface unit and an eUICC chip, the Bluetooth unit is connected with the interface unit; and the interface unit is connected with the eUICC chip. By implementing the system provided by the utility model, the deployment cost of the eUICC can be reduced, the flexibility of the eUICC can be improved, and the applicability of the eUICC in different equipment and application scenes can be expanded, so that the problems of complicated technical implementation, high deployment cost, poor flexibility and compatibility of the traditional eUICC scheme can be solved.

Description

Technical Field

[0001] This utility model relates to the field of smart card technology, and in particular to a Bluetooth eUICC smart card system. Background Technology

[0002] With the rapid development of IoT and mobile communication technologies, eSIM (embedded SIM) is gradually replacing traditional pluggable SIM cards, becoming a more flexible and efficient solution. eSIM enables profile downloading, activation, and management through a remote management platform, allowing users to easily switch operators and network configurations without replacing the physical SIM card. However, eSIM technology is typically integrated into the device, meaning it cannot be easily removed or replaced like a traditional SIM card, limiting its flexibility and application scope in certain scenarios.

[0003] Furthermore, eSIM technology relies on the device's own communication module to interact with the remote management platform, typically requiring an LPA (Local Profile Assistant) to manage eSIM configuration and operation. To support remote eSIM management, different devices may need to develop and port different versions of the LPA, posing additional technical challenges for device manufacturers. Due to LPA implementation and compatibility issues, device diversity can lead to inconsistent management experiences across different platforms, increasing operators' technical support and maintenance workload across multiple devices and limiting the widespread adoption of eSIM technology. Traditional solutions require integrating the LPA into upper-layer systems, which not only increases system complexity but also raises development costs. Due to the diversity of different devices and platforms, device manufacturers need to develop and port LPAs according to specific circumstances, making eSIM deployment more cumbersome and costly. Traditional eUICC solutions struggle to achieve independent management and flexible configuration of eUICC, limiting the application scenarios of eSIM technology, especially in rapidly developing fields such as the Internet of Things (IoT). The presence of the LPA and device diversity further complicate the flexible management and configuration of eSIM, reducing the technology's adaptability. The eUICC solution based on the BIP protocol requires pre-installation of seed numbers. This not only increases network service costs but also further limits the deployment scope of eUICC due to the roaming area limitations of the seed network. Pre-installation of seed numbers necessitates additional communication support and network deployment, leading to an increase in overall deployment costs.

[0004] Therefore, it is necessary to design a new system to reduce the deployment cost of eUICC, improve its flexibility, and broaden its applicability in different devices and application scenarios, in order to solve the problems of complex technical implementation, high deployment cost, poor flexibility and compatibility faced by traditional eUICC solutions. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a Bluetooth eUICC smart card system.

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is achieved through the following technical solution: providing a Bluetooth eUICC smart card system, including: a Bluetooth unit, an interface unit, and an eUICC chip; the Bluetooth unit is connected to the interface unit; the interface unit is connected to the eUICC chip.

[0007] The further technical solution is as follows: the Bluetooth unit includes a Bluetooth chip, and the Bluetooth chip is connected to the interface unit through a serial port.

[0008] The further technical solution is as follows: the interface unit includes an interface forwarding chip, and the interface forwarding chip is connected to the Bluetooth chip.

[0009] The further technical solution is as follows: the interface unit further includes a first interface and a second interface, the first interface and the second interface being respectively connected to the interface forwarding chip.

[0010] The further technical solution is as follows: the first interface is connected to the eUICC chip.

[0011] The further technical solution is as follows: the second interface is connected to the SIM card interface of the mobile terminal.

[0012] The further technical solution is as follows: the first interface is an ISO7816 interface.

[0013] The further technical solution is as follows: the second interface is an ISO7816 interface.

[0014] The further technical solution includes a remote management platform, which is connected to the Bluetooth unit.

[0015] The further technical solution is as follows: the remote management platform is connected to the eSIM DP+ server of the telecom operator.

[0016] The advantages of this invention compared to existing technologies are as follows: By combining the Bluetooth unit with the interface unit and the eUICC chip, this invention reduces the deployment cost of eUICC, improves flexibility, and broadens its applicability in different devices and application scenarios. The Bluetooth unit provides wireless communication capabilities, eliminating the need for complex local program development for remote management of the eUICC chip, thus simplifying the traditional eUICC deployment process and reducing equipment costs. The interface unit achieves compatibility with different devices through the ISO7816 interface, solving the problem of inconsistent interfaces in traditional eUICC solutions and enabling its widespread application in various terminal devices. At the same time, Bluetooth communication technology improves the system's flexibility and scalability, allowing the eUICC chip to be remotely configured and managed without relying on wired connections, thus addressing the shortcomings of traditional solutions in terms of flexibility and compatibility.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a Bluetooth eUICC smart card system provided in this embodiment of the present invention;

[0020] Figure 2 A specific circuit diagram of a Bluetooth eUICC smart card system provided for an embodiment of this utility model;

[0021] Explanation of the markings in the image:

[0022] 10. Bluetooth unit; 20. Interface unit; 30. eUICC chip; 40. Remote management platform; 50. eSIM DP+ server; 60. Mobile terminal device; 70. Mobile communication cellular network. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] With the rapid development of IoT and mobile communication technologies, eSIM is gradually replacing traditional SIM cards. However, because eSIM is integrated into devices and relies on a remote management platform40 for configuration and operation via LPA, it presents challenges in terms of device compatibility, technical support, and development costs. The diversity of different devices and platforms makes eSIM deployment cumbersome, and traditional eUICC solutions are difficult to configure flexibly, increasing system complexity and cost. Furthermore, eUICC solutions based on the BIP protocol rely on pre-installed seed numbers, further limiting the flexibility and application scope of eSIM.

[0028] To address this, this utility model provides a Bluetooth eUICC smart card system that reduces the deployment cost of eUICC, enhances its flexibility, and broadens its applicability in different devices and application scenarios, thereby solving the problems of complex technical implementation, high deployment cost, poor flexibility, and compatibility faced by traditional eUICC solutions.

[0029] Specifically, this Bluetooth eUICC smart card system, by combining Bluetooth unit 10, interface unit 20, and eUICC chip 30, simplifies the connection and operation of eUICC using Bluetooth communication technology, thereby significantly reducing deployment costs. The connection method between Bluetooth unit 10 and interface unit 20 allows eUICC to easily pair and communicate with various devices via Bluetooth, while the design of interface unit 20 supports the ISO7816 standard interface, improving compatibility and flexibility. Furthermore, the introduction of remote management platform 40 further enhances system manageability and simplifies operation and maintenance processes. The overall solution, by reducing hardware dependence and simplifying the technical architecture, improves system adaptability, broadens its application scope in different devices and application scenarios, and solves the problems of complexity, high cost, and poor compatibility of traditional eUICC solutions.

[0030] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0031] Please see Figure 1 A Bluetooth eUICC smart card system includes: a Bluetooth unit 10, an interface unit 20, and an eUICC chip 30; the Bluetooth unit 10 is connected to the interface unit 20; the interface unit 20 is connected to the eUICC chip 30.

[0032] In this embodiment, the Bluetooth unit 10 acts as a "local configuration assistant" in the system. Its main function is to interact with an external remote management platform 40 (such as a mobile APP, WeChat mini-program, or web browser) via Bluetooth communication. The Bluetooth unit 10 uses a low-power Bluetooth chip and supports the BLE 5.0 protocol, ensuring low-power and efficient data transmission. This unit is responsible for receiving and parsing remote management commands.

[0033] Interface unit 20 is an important bridge connecting Bluetooth unit 10 and eUICC chip 30. Its main function is to forward management commands received by Bluetooth unit 10 to eUICC chip 30, while also supporting access to traditional SIM card interface.

[0034] The eUICC chip 30 (embedded universal integrated circuit card) complies with GSMA standards and has remote configuration and management capabilities. This chip can store configuration files from multiple operators, supporting remote switching between different operators. The eUICC chip 30 communicates with the mobile terminal device 60 through the interface unit 20, and the mobile terminal device 60 connects to the mobile communication cellular network 70, realizing the functions of a traditional SIM card. This allows users to remotely download and switch operator configuration files without physically inserting or removing the SIM card.

[0035] The eUICC chip 30's functions are not limited to the conventional SIM card functions. It also supports configuration updates under the guidance of the remote management platform 40, ensuring that users can flexibly use the services of different operators.

[0036] In one embodiment, please refer to Figure 2 The Bluetooth unit 10 mentioned above includes a Bluetooth chip, which is connected to the interface unit 20 via a serial port.

[0037] In this embodiment, the core of the Bluetooth unit 10 is a Bluetooth chip, which is connected to the interface unit 20 via a serial port. The Bluetooth chip functions as the LPA (Local Profile Assistant) of this system, responsible for Bluetooth communication with the remote management platform 40 and receiving and processing management commands.

[0038] Bluetooth chip functions include:

[0039] It interacts with the APP, WeChat mini-program or web page on the mobile terminal device 60 via Bluetooth communication protocol and receives instructions sent by the remote management platform 40.

[0040] The Bluetooth chip supports the BLE 5.0 protocol, ensuring high-efficiency communication and low power consumption.

[0041] It can perform corresponding processing according to management instructions, such as activating the remote management function of eUICC chip 30.

[0042] The Bluetooth chip is connected to the interface forwarding chip via a serial port, enabling seamless connection between the Bluetooth chip and the interface forwarding chip, thus ensuring that commands can be successfully transmitted from the Bluetooth chip to the interface forwarding chip.

[0043] In one embodiment, please refer to Figure 2 The aforementioned interface unit 20 includes an interface forwarding chip, which is connected to the Bluetooth chip.

[0044] In one embodiment, please refer to Figure 2 The aforementioned interface unit 20 further includes a first interface and a second interface, which are respectively connected to the interface forwarding chip.

[0045] In one embodiment, please refer to Figure 2 The first interface mentioned above is connected to the eUICC chip 30.

[0046] In one embodiment, please refer to Figure 2 The second interface mentioned above is connected to the SIM card interface of the mobile terminal.

[0047] In one embodiment, please refer to Figure 2 The first interface mentioned above is the ISO7816 interface.

[0048] In one embodiment, please refer to Figure 2 The second interface mentioned above is the ISO7816 interface.

[0049] In this embodiment, the key component of the interface unit 20 is the interface forwarding chip, which plays the role of signal forwarding and protocol conversion. It can effectively transmit instructions from the Bluetooth chip to the eUICC chip 30 and supports interoperability with the traditional SIM card interface of the mobile terminal device 60.

[0050] It has two ISO7816 interfaces, one for connecting the eUICC chip 30 and the other for connecting the SIM card interface of the mobile terminal device 60.

[0051] It connects to the Bluetooth chip via a serial port, receives commands from the Bluetooth chip, and forwards these commands according to the target interface.

[0052] The Bluetooth chip connects to the interface forwarding chip via a serial port, ensuring that commands and data can be transmitted from the Bluetooth chip to the interface forwarding chip. The serial port interface is a high-speed and stable signal transmission method, ensuring error-free signal transmission during data exchange between devices.

[0053] In the interface unit 20, in addition to the interface forwarding chip, there are two other important interfaces, namely the first interface and the second interface.

[0054] The first interface connects to the eUICC chip 30. This interface is an ISO7816 interface, specifically designed for connecting the eUICC chip 30. The ISO7816 interface is a standard interface widely used in SIM cards and smart cards, enabling data reading, writing, authentication, configuration, and other operations on the eUICC chip 30.

[0055] The second interface connects to the SIM card interface of the mobile terminal. This interface is also an ISO7816 interface and connects to the SIM card slot of the mobile terminal. It allows the mobile terminal device 60 to communicate with the eUICC chip 30 through the interface forwarding chip, thus enabling the eUICC chip 30 to function in traditional SIM card devices.

[0056] Through these two interfaces, the interface forwarding chip can forward access requests from the mobile terminal device 60 to the eUICC chip 30, enabling interaction with the eUICC chip 30, such as file reading and writing, user authentication, and other operations.

[0057] In the above embodiments, the Bluetooth unit 10 and the interface unit 20, through a rationally designed component structure and effective protocol conversion, achieve remote management of the eUICC chip 30 and compatibility with the traditional SIM card interface. The Bluetooth chip, acting as an LPA, connects to the interface forwarding chip via a serial port. The interface forwarding chip, in turn, connects to the eUICC chip 30 and the SIM card interface of the mobile terminal device 60 via two ISO7816 interfaces, thereby ensuring the system's high efficiency, flexibility, and stability at both the physical interface and communication protocol levels.

[0058] This design effectively simplifies the deployment of eUICC, enabling it to be compatible with traditional SIM card devices and to flexibly manage and interact with the remote management platform 40 via Bluetooth, thus providing users with a convenient eSIM management experience.

[0059] In one embodiment, please refer to Figure 1 The aforementioned Bluetooth eUICC smart card system also includes a remote management platform 40, which is connected to the Bluetooth unit 10.

[0060] In one embodiment, please refer to Figure 1 The aforementioned remote management platform 40 is connected to the telecom operator's eSIM DP+ server 50.

[0061] To achieve more efficient remote management, the remote management platform 40 connects to the eSIM DP+ server 50 to complete remote configuration, eSIM profile download, activation, and other management operations.

[0062] The Bluetooth chip, acting as the communication intermediary in this system, is responsible for handling Bluetooth communication with the remote management platform 40, parsing and forwarding management commands, and is directly connected to the interface forwarding chip.

[0063] The interface forwarding chip enables communication between the eUICC chip 30 and the terminal device through two ISO7816 interfaces, ensuring smooth access and configuration of the eUICC chip 30.

[0064] The remote management platform 40 communicates with the Bluetooth chip to further enable remote management of the eUICC chip 30. This platform can interact with the Bluetooth unit 10 via a mobile app, WeChat mini-program, or web interface. Through this interaction, the remote management platform 40 can send management commands or control the configuration file of the eUICC chip 30.

[0065] The remote management platform 40 not only connects to the Bluetooth chip but also interacts with the eSIM DP+ server 50 via the internet. The eSIM DP+ (eSIM Device Profile) is part of the eSIM platform and is responsible for receiving, managing, and activating the eUICC profile. When the remote management platform 40 sends configuration management commands via Bluetooth, these commands are forwarded to the interface forwarding chip and transmitted to the eUICC chip 30 via the ISO7816 interface. Simultaneously, the remote management platform 40 maintains communication with the eSIM DP+ server 50 to ensure that it can send update and activation operations and download eSIM profile files.

[0066] The remote management platform 40 sends management commands via Bluetooth, which are then transmitted to the interface forwarding chip via the Bluetooth chip.

[0067] The interface forwarding chip transmits management commands to the eUICC chip 30 through the first ISO7816 interface for remote management operations (such as configuration file updates, activation, etc.).

[0068] The remote management platform 40 is connected to the eSIM DP+ server 50 via the Internet, and the eSIM DP+ server 50 responds to eUICC's eSIM profile download and activation requests.

[0069] In this embodiment, a Bluetooth Low Energy (BLE) chip is selected as the communication interface between the LPA and the remote management platform 40.

[0070] The interface forwarding chip supports dual ISO7816 interfaces, which are connected to the eUICC chip 30 and the SIM card interface respectively.

[0071] The eUICC chip 30 complies with GSMA standards and supports remote configuration and management functions.

[0072] The Bluetooth chip has built-in LPA logic, which supports interfacing with the communication protocol of the remote management platform 40.

[0073] The interface forwarding chip has built-in communication forwarding logic to ensure smooth communication between the eUICC chip 30 and the mobile terminal device 60 and the remote management platform 40.

[0074] The remote management platform 40 (APP, WeChat mini-program or WEB web page) supports Bluetooth communication and has the ability to connect to the eSIM DP+ server 50 via the Internet to send and receive commands.

[0075] Through the above technical solution, the Bluetooth eUICC smart card system provides a flexible and efficient remote management mechanism, enabling the eUICC chip 30 to interact with the external management platform and eSIM DP+ server 50 via Bluetooth communication, thus achieving remote configuration, management, and activation of the eUICC. This design not only enhances the application flexibility of the eUICC but also solves the compatibility problem between traditional SIM cards and the eUICC chip 30, improving the user experience. Furthermore, the Bluetooth Low Energy protocol enhances the efficiency and stability of the entire system.

[0076] In this embodiment, the remote management platform 40 communicates with the Bluetooth unit 10 via Bluetooth. The Bluetooth unit 10, acting as an LPA, receives and parses remote management commands. The commands are transmitted to the interface unit 20 via a serial port, and the interface unit 20 then transmits the commands to the eUICC chip 30 via the first ISO7816 interface. In this way, the system can realize remote configuration and management of the eUICC chip 30.

[0077] When the mobile terminal device 60 needs to access the eUICC chip 30, the device connects to the second ISO7816 interface of the interface unit 20 through the SIM card interface. The interface unit 20 forwards the request to the eUICC chip 30 to enable access to the eUICC chip 30, including file reading and writing, authentication and other operations.

[0078] The system uses a low-power Bluetooth chip as the LPA, interface unit 20 supports dual ISO7816 interfaces, and eUICC chip 30 conforms to the GSMA standard, enabling remote configuration and management. Interface unit 20 connects Bluetooth unit 10 and eUICC chip 30 via a serial port.

[0079] The Bluetooth unit 10 has built-in LPA logic, which supports Bluetooth communication with the remote management platform 40, and can parse and process management commands. The interface unit 20 has built-in communication forwarding logic to ensure data flow between the Bluetooth unit 10 and the eUICC chip 30. The remote management platform 40 (such as an APP, mini-program or web page) can support Bluetooth communication and Internet connection, and provide functions for creating and sending management commands.

[0080] Communication with the remote management platform 40 via Bluetooth allows users to remotely manage the eUICC without porting the LPA program to the device. The system is compatible with traditional SIM card devices via the ISO7816 interface, enabling the eUICC chip 30 to be used on existing hardware platforms, simplifying eUICC deployment and usage. The use of Bluetooth Low Energy technology ensures that battery consumption remains within a reasonable range during standby and communication.

[0081] This Bluetooth eUICC smart card system allows users to remotely manage the eUICC chip 30 in a simpler and more efficient way, while maintaining compatibility with traditional SIM card devices, providing a new solution for the widespread application of mobile communication devices and IoT terminals.

[0082] In one embodiment, please refer to Figure 2 The aforementioned Bluetooth chip is also connected to a 24MHz crystal oscillator X1, which provides a clock source for the Bluetooth chip.

[0083] The Bluetooth chip is also connected to capacitors C1, C2, C3, C4, and C5 for filtering and voltage stabilization.

[0084] The Bluetooth chip is also connected to an inductor L2 for matching and filtering.

[0085] In this embodiment, the eUICC chip 30 and the Bluetooth communication chip are packaged into a 4FF standard Nano SIM card, simplifying the deployment process of the eUICC and enabling it to be applied more quickly to traditional plug-and-play card communication modules and mobile communication terminals. Through the wireless communication capability of the Bluetooth chip, data interaction is achieved with a mobile APP, WeChat mini-program, or web browser, establishing a connection between the eUICC smart card and an external management platform (such as the eSIM DP+ server 50). This enables standard interaction between the eUICC and the eSIM DP+ platform, thereby achieving flexible remote management of the eUICC. Simultaneously, it is compatible with the ISO7816 standard and can support access via traditional SIM card interfaces; that is, it enables the eUICC chip 30 to communicate with the remote management platform 40 via Bluetooth without the need to develop LPA programs on the eUICC deployment module or terminal device; it achieves compatibility between the eUICC chip 30 and the mobile terminal device 60, enabling it to access via traditional SIM card interfaces; and it encapsulates the eUICC chip 30 and the Bluetooth communication chip into a 4FF-format Nano SIM card, compatible with traditional pluggable card devices, and possessing Bluetooth wireless communication capabilities, ensuring system stability and efficiency.

[0086] Specifically, the Bluetooth chip connects to the interface forwarding chip via a serial port; the interface forwarding chip connects to the eUICC chip 30 via a first ISO7816 interface; the interface forwarding chip connects to the SIM card interface of the mobile terminal device 60 via a second ISO7816 interface; the mobile terminal device 60 indirectly accesses the eUICC chip 30 through the interface forwarding chip; the remote management platform 40 communicates with the Bluetooth chip via a Bluetooth BLE application to remotely manage the eUICC chip 30, and connects to the eSIM DP+ server 50 via the Internet. The remote management platform 40 communicates with the Bluetooth chip via Bluetooth to send management commands; the Bluetooth chip, acting as an LPA, parses the commands and forwards them to the interface forwarding chip via a serial port; the interface forwarding chip transmits the commands to the eUICC chip 30 via the first ISO7816 interface, completing the remote management operation.

[0087] The mobile terminal device 60 is connected to the second ISO7816 interface of the interface forwarding chip through the SIM card interface; the interface forwarding chip forwards the access request of the mobile terminal device 60 to the eUICC chip 30, realizing interactive operations such as access to eUICC, file reading and writing, and authentication.

[0088] Through the above methods, the system of this embodiment can achieve flexible remote management of the eUICC chip 30 and compatibility with traditional SIM card interfaces, thereby improving the application scope and user experience of eUICC technology.

[0089] The aforementioned Bluetooth eUICC smart card system, by combining the Bluetooth unit 10 with the interface unit 20 and the eUICC chip 30, reduces eUICC deployment costs, enhances flexibility, and broadens its applicability in different devices and application scenarios. The Bluetooth unit 10 provides wireless communication capabilities, enabling remote management of the eUICC chip 30 without complex local program development, thereby simplifying the traditional eUICC deployment process and reducing equipment costs. The interface unit 20 achieves compatibility with different devices through the ISO7816 interface, solving the problem of inconsistent interfaces in traditional eUICC solutions and enabling its widespread application in various terminal devices. At the same time, Bluetooth communication technology improves the system's flexibility and scalability, allowing the eUICC chip 30 to be remotely configured and managed without relying on wired connections, overcoming the shortcomings of traditional solutions in terms of flexibility and compatibility.

[0090] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A Bluetooth eUICC smart card system, characterized in that, include: The device includes a Bluetooth unit, an interface unit, and an eUICC chip; the Bluetooth unit is connected to the interface unit; and the interface unit is connected to the eUICC chip.

2. The Bluetooth eUICC smart card system according to claim 1, characterized in that, The Bluetooth unit includes a Bluetooth chip, which is connected to the interface unit via a serial port.

3. The Bluetooth eUICC smart card system according to claim 2, characterized in that, The interface unit includes an interface forwarding chip, which is connected to the Bluetooth chip.

4. The Bluetooth eUICC smart card system according to claim 3, characterized in that, The interface unit further includes a first interface and a second interface, which are respectively connected to the interface forwarding chip.

5. A Bluetooth eUICC smart card system according to claim 4, characterized in that, The first interface is connected to the eUICC chip.

6. The Bluetooth eUICC smart card system according to claim 4, characterized in that, The second interface is connected to the SIM card interface of the mobile terminal.

7. A Bluetooth eUICC smart card system according to claim 4, characterized in that, The first interface is an ISO7816 interface.

8. A Bluetooth eUICC smart card system according to claim 4, characterized in that, The second interface is an ISO7816 interface.

9. A Bluetooth eUICC smart card system according to claim 1, characterized in that, It also includes a remote management platform, which is connected to the Bluetooth unit.

10. A Bluetooth eUICC smart card system according to claim 9, characterized in that, The remote management platform is connected to the telecom operator's eSIM DP+ server.

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