Mobile SIM Cards for GSM Networks | STK, OTA, Java, and High Capacity SIM Solutions

HKCARD provides mobile SIM cards for GSM networks, including STK SIM, OTA SIM, WIB SIM, Java-based SIM, S@T SIM, Celltick SIM, and high-capacity SIM solutions for telecom applications.

Mobile SIM Cards for GSM Networks

A mobile SIM card is an essential part of GSM communication. It stores subscriber identity information and allows the device to connect to the network for voice, data, and messaging services. In addition to basic telecom functions, modern SIM cards can support STK menus, OTA updates, and a range of value-added services for mobile operators and service providers.

HKCARD ELECTRONICS supplies different types of mobile SIM card solutions for telecom projects, operator services, and customized applications. Our SIM cards are available in multiple capacities and can be configured for different service requirements.

SIM Card Product Families

Below is an overview of the main SIM card types we provide:

SIM Cards for Mobile Services

Our SIM card solutions are designed for GSM networks and support the main services required by mobile operators. Besides standard voice and data functions, these cards can also be used for service menus, promotional applications, and remote updates.

For telecom operators and service providers, this flexibility is important. It allows SIM cards to do more than just identify a subscriber. They can also become a platform for applications, service delivery, and customer engagement.

STK SIM Cards

STK SIM cards are widely used in GSM networks for value-added services. With the STK menu, operators can provide applications such as:

• mobile banking
• mobile stock services
• operator self-service menus
• promotional content
• service shortcuts

These cards are available in several capacities, including 16K, 32K, 64K, 128K, and 256K.

OTA SIM Cards

OTA SIM cards support over-the-air updates, which means services and applications can be updated remotely without replacing the card. This is useful for operators that need to manage large subscriber bases efficiently.

Our OTA SIM card solutions support:

• OTA1 / OTA2 / OTA3
• ETSI 03.48
• service updates through remote download

This makes them suitable for telecom operators that want flexible service management and secure application updates.

WIB SIM Cards

WIB SIM cards come with a WIB 1.3 mini browser preloaded. They are designed for wireless internet access and service interaction, making them useful for operator services and mobile application projects.

Java-Based SIM Cards

Java-based SIM cards are built on the Java Card platform and offer more flexibility for application development. They are often used in projects that require custom logic, service integration, or secure applet support.

S@T SIM Cards

S@T SIM cards are based on the S@T specification and are used in operator service environments where menu-based access and service interaction are needed.

Celltick SIM Cards

Celltick SIM cards follow the Celltick specification and are suitable for mobile content delivery and value-added service applications.

High Capacity SIM Cards

For applications that require more storage, HKCARD also supplies high capacity SIM cards. These cards are designed for storing larger amounts of content, including high-quality audio and video files.

High Capacity SIM cards support:

• MMS applications
• USB-related use cases
• larger data storage needs

They are available in capacities such as 512M and 1G or above.

Standards and Specifications

Our mobile SIM card products are manufactured according to commonly used telecom standards and specifications, including:

• ISO 7816
• GSM 11.11
• GSM 11.12
• GSM 11.14
• GSM 03.48
• OTA1 / OTA2 / OTA3 specifications used by China Mobile
• other carrier-specific requirements

This ensures broad compatibility across telecom projects and network environments.

Security and Authentication

Security is a key part of SIM card design. HKCARD SIM cards support established authentication algorithms, including:

• COMP128-1
• COMP128-2
• COMP128-3
• DES / 3DES

These algorithms help protect subscriber identity data and support secure network access.

Main Product Features

Our mobile SIM card solutions are designed with practical telecom use in mind. Key features include:

• subscriber identity authentication
• data storage
• support for GSM voice and data services
• backup mechanisms for data integrity
• PPS and Clock Stop Mode support
• anti-cloning protection
• faster access to phone book and SMS storage
• STK-based value-added applications
• OTA update support
• support for RFM, RAM, and DSM
• short message broadcast functions
• large phone book management
• compatibility with China Mobile specifications
• full terminal compatibility

Applications

These SIM card products are widely used in:

• mobile operator services
• telecom value-added applications
• banking and financial service menus
• remote SIM management
• wireless content delivery
• mobile internet access
• enterprise telecom projects
• customized carrier solutions

Conclusion

HKCARD ELECTRONICS provides a complete range of mobile SIM card solutions for GSM networks, including STK SIM cards, OTA SIM cards, WIB SIM cards, Java-based SIM cards, S@T SIM cards, Celltick SIM cards, and high capacity SIM cards.

If you are looking for a reliable SIM card supplier for telecom applications, value-added services, or customized operator projects, HKCARD can support your requirements with stable quality and flexible options.

Best Regards
Byron
HKCARD ELECTRONICS CO., LIMITED
WhatsApp / WeChat: +86 15817372512
Skype: byron1681
Email: byronhan@cardmfg.com