HKCARD Electronics: Your Trusted Global Supplier of Programmable SIM Cards for 4G, 5G & IoT
Programmable SIM Cards | Writable IMSI/Ki/ICCID | Sysmocom Alternative – HKCARD
HKCARD is a reliable SIM card manufacturer with 15+ years in the industry. We supply programmable, re-programmable (not one-time burn) SIM cards for 4G LTE, 5G NR SA, and IoT testing, fully compatible with pySim, Open5GS, srsRAN, and Sysmocom (SJA2/SJS1). Order bulk SIMs, white label MVNO SIMs, NFC, and blank eSIMs today.
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HKCARD Electronics – The Leading Programmable SIM Card Supplier Since 2009
For over 15 years, HKCARD ELECTRONICS CO., LIMITED has been a trusted name in the mobile phone SIM cards industry, serving telecom engineers, IoT developers, private network operators, and research institutions worldwide.
As a direct SIM card manufacturer, we specialize in high-performance re-programmable SIM cards that support full customization of critical network parameters — including IMSI, Ki, ICCID, OP/OPc, MNC, MCC, SPN, and KEY fields — using open-source tools like pySim and standard PC/SC readers.
Whether you’re building a private 5G network, developing an IoT device, or running a USIM test solution in your lab, HKCARD provides the sim card solutions you need — fast, reliable, and at competitive pricing.
Full Range of Writable & Reprogrammable SIM Cards
Unlike one-time programmed or locked SIMs, our re-programmable (not one-time burn) SIM cards are designed for flexibility and reuse. They are ideal for dynamic environments where frequent configuration changes are required.
✅ Key Features:
- Writable IMSI SIM Cards – Customize subscriber identity.
- Writable imsi sim cards free – Sample kits available for qualified projects.
- Writable Ki SIM Cards – For secure authentication key programming.
- Writable ICCID SIM Cards – Modify card identification numbers.
- Writable OP or OPc SIM Cards – Essential for 4G/5G AKA protocols.
- Writable KEY, SPN, MNC, MCC SIM Cards – Full control over network and service settings.
All cards are programmable SIM cards using PC/SC tools such as pySim, making them perfect for automation and integration into CI/CD pipelines.
Advanced 4G LTE & 5G NR Programmable Solutions
We go beyond basic GSM to deliver cutting-edge SIM technology for modern networks.
🔹 USIM / LTE SIM Cards (Not GSM-only)
Our USIM 4G and usimlte cards support advanced features like:
- Multi-network roaming
- VoLTE connectivity
- High-speed data on WCDMA/LTE
🔹 4G LTE/WCDMA Blank Cards
Perfect for multi network 4g volte sim card setups and custom carrier branding.
🔹 5G NR & SUCI Support
- Programmable SIM card 5G
- Custom SIM cards for 4G LTE & 5G NR Networks
- HKCARD’s Programmable SIM Cards for 5G Networks
- Programmable 5G NR 3GPP R16 SA 5G SIM Card
- 5G SA 128K SIM / 5g sa sim card
- SUCI SIM card – Supports Subscription Concealed Identifier for enhanced privacy in 5G core networks
Note: “suci sim คือ” means “what is suci sim” in Thai — we serve global clients searching in multiple languages.
Form Factors & Specialized SIM Types Available
We offer all standard physical formats and specialized variants:
| Feature | Supported |
|---|---|
| Available form factors | 2FF / 3FF / 4FF SIM Cards |
| Nano-USIM | Yes |
| Half SIMCard LTE Trio | Yes (punch-out format) |
| White SIM Card / White Sims | Blank, unbranded cards |
| Empty SIM Card / Sim Blank | Ready for personalization |
| Dummy SIM Card / Fake SIM | Mechanical test cards |
| Blank SIM Cards / Bulk SIM | Wholesale pricing available |
| Java SIM Card / SIM Java | With applet support |
| NFC SIM / SIM Card NFC | For contactless payments, access control, parking sim cards |
| UIM Card / CDMA SIM Card / RUIM Card | Legacy CDMA compatibility |
| White Label MVNO SIM Cards | Fully customizable for resellers |
| Blank eSIM | On request |
| TD SIM | Available upon request |
We also support offbrand sim, simcard half lte, sim personalize tools, and sim wallet nfc integrations.
Seamless Compatibility with Sysmocom, pySim & Open-Source Tools
Thousands of users search daily for:
- sysmocom SIM card
- sysmocom SIM cards
- sysmoISIM-SJA2
- sysmoUSIM-SJS1
- sysmoISIM-SJA5
- SJA2
HKCARD offers fully compatible alternatives that work seamlessly with:
✅ pySim and other PC/SC-based SIM programming tools
✅ Open-source mobile stacks: Open5GS, srsRAN, Amarisoft
✅ Academic and industrial USIM test solution environments
If you’re currently relying on Sysmocom products, HKCARD can provide form-, function-, and file-system-compatible programmable SIM cards — often at better availability and lower cost.
Looking for Sysmocom Alternatives? Choose HKCARD’s Programmable Test SIM Cards.
Who Uses HKCARD Programmable SIMs?
🔹 Telecom Engineers & Private 5G Labs – Testing standalone 5G cores
🔹 MVNOs & Resellers – Needing white label mvno sim cards
🔹 IoT Device Makers – Requiring IoT/Evaluation SIM Cards
🔹 University Researchers – Running experiments with Open5GS/srsRAN
🔹 Security Testers – Validating Ki, OPc, SUCI implementations
🔹 Fintech & Smart City Developers – Using NFC SIM cards for sim wallet nfc and access systems
Frequently Asked Questions (FAQ)
Q1: Are your SIM cards truly re-programmable?
Yes. All our programmable SIMs are not one-time burn, allowing unlimited rewrites of IMSI, Ki, and other fields.
Q2: Do you offer writable IMSI SIM cards for free?
Yes! Qualified developers and researchers may receive writable imsi sim cards free samples for evaluation.
Q3: Can I use pySim to program HKCARD SIMs?
Absolutely. Our cards are 100% compatible with pySim and standard PC/SC readers.
Q4: Are you a real SIM card manufacturer?
Yes. HKCARD ELECTRONICS CO., LIMITED is a direct sim card manufacturer, not a middleman.
Q5: Do you have alternatives to sysmoISIM-SJA2?
Yes. Our cards are drop-in replacements for sysmoISIM-SJA2, SJS1, and SJA5.
Q6: What is a SUCI SIM card used for?
It hides the user’s permanent identity (SUPI) in 5G networks. Our SUCI SIM card supports this protocol for secure testing.
Q7: Do you sell blank SIM cards for Airtel or other carriers?
We supply blank sim card airtel-style cards, but they are unbranded so you can customize them.
Q8: Can I order bulk SIM cards wholesale?
Yes. We are a leading sim cards wholesale supplier, offering volume discounts.
Q9: Are NFC SIM cards available?
Yes. We offer nfc sim and sim card nfc options for smart payment and access applications.
Q10: How do I get started with a sim card creator project?
Contact us at byronhan@cardmfg.com — we’ll help you choose the right sim programming solution.
1:
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2 :
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Contact Us Today – Your Reliable SIM Partner
Ready to power your next project?
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
📦 Bulk Orders | Free Samples | Fast Worldwide Shipping
Choose HKCARD ELECTRONICS CO., LIMITED — your trusted partner in programmable connectivity.
