In today’s fast-evolving telecom landscape, network operators, IoT developers, and testing engineers require flexible, secure, and ready-to-deploy SIM solutions. HKCARD ELECTRONICS CO.,LIMITED presents the Writable Programmable Blank USIM Card, a 5-piece pack engineered to support 4G LTE, WCDMA, and GSM networks. With built-in Milenage authentication and a triple-cut design covering 2FF (Mini), 3FF (Micro), and 4FF (Nano) form factors, this card is the ultimate tool for customizing network profiles, private LTE deployments, and device validation.
1. What Are Writable Programmable USIM Cards from HKCARD?
A writable programmable USIM card is a blank subscriber identity module that can be personalized with custom parameters — IMSI, Ki, OPC, ADM keys, and more — using standard card programming tools. Unlike fixed-profile operator SIMs, these blanks give you full control over authentication vectors and network settings. HKCARD ELECTRONICS CO.,LIMITED supplies these cards specifically tested for Milenage algorithm compliance, making them perfect for 3G and 4G network simulations, test beds, and small-scale private mobile networks.
2. Triple-Cut Design: Mini (2FF), Micro (3FF), and Nano (4FF) in Every Pack
Each pack contains 5 pieces of programmable USIM cards, all pre-cut to support the three most common form factors. You simply snap out the size you need — 2FF for older M2M routers, 3FF for many tablets and feature phones, or 4FF for modern smartphones and compact IoT modules. No adapters, no separate purchases. HKCARD ensures the contact pads and chip placement meet ISO/IEC 7816 standards, guaranteeing a reliable physical connection in any slot.
3. Built-in Milenage Algorithm: The Key to 4G/3G Security
The Milenage algorithm is the cornerstone of mutual authentication in 3GPP networks. HKCARD’s blank USIM cards come with the Milenage algorithm pre-loaded into the card OS, ready to accept your Operator Key (OP/OPc) and secret K values. This means you can immediately set up a USIM that speaks the native security language of WCDMA and LTE networks, avoiding compatibility headaches with legacy COMP128-only cards. Whether you are stress-testing a core network, demonstrating a private 5G-ready LTE setup, or running VoLTE trials, these cards deliver trusted, wirelessly authenticated sessions.
4. Broad Network Compatibility: GSM, WCDMA, LTE for Global Use
Versatility is at the heart of this product. The HKCARD writable USIM card supports 2G GSM, 3G WCDMA, and 4G LTE radio access technologies. It handles circuit-switched and packet-switched data, SMS, and supplementary services seamlessly. Telecom operators and MVNOs can use these blanks to validate roaming scenarios, provision test subscriptions, or rapidly distribute sample SIMs to field engineers. The cards are fully compliant with 3GPP TS 31.102 (USIM) and TS 51.011 (SIM) specifications, giving you a global-ready solution irrespective of the target band or region.
5. Order Your 5pcs Blank USIM Card Pack from HKCARD ELECTRONICS CO.,LIMITED
Ready to integrate programmable USIM cards into your workflow? HKCARD ELECTRONICS CO.,LIMITED makes procurement simple and direct. We offer competitive factory pricing, rapid global shipping, and dedicated pre-sales technical consultation to help you configure the correct card profile for your application.
Reach out today to place your order or request a sample batch:
HKCARD ELECTRONICS CO.,LIMITED
📧 Email: byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp / WeChat: +86 158 1737 2512
Whether you need the standard 5pcs pack or a bulk order with custom laser engraving, HKCARD is your trusted partner for high-quality programmable telecom cards.
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