HKCARD: Your Trusted Provider of Programmable SIM Cards for 4G LTE & 5G NR Networks
Programmable SIM Cards | 5G/4G LTE Writable IMSI/Ki/ICCID | HKCARD Electronics
HKCARD offers a complete range of programmable SIM cards with writable IMSI, Ki, ICCID, and OP/OPc for 5G NR & 4G LTE networks. A trusted Sysmocom-compatible alternative, our cards are pySim-ready. ISO9001 certified supplier with 15+ years of industry experience.
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The Premier SIM Card Manufacturer for Global Telecommunications
For over 15 years, HKCARD ELECTRONICS CO., LIMITED has been a cornerstone of the mobile phone sim cards industry. As a leading sim card manufacturer and sim cards wholesale supplier, we empower developers, network operators, MVNOs, and research institutions with reliable, re-programmable USIM/LTE SIM cards. Our expertise ensures you receive high-quality sim card solutions that power innovation in both 4G LTE and 5G NR environments.
Complete Control with Writable and Re-Programmable SIM Cards
HKCARD puts the power of network configuration in your hands. Our cards are designed for ultimate flexibility, moving beyond the limitations of standard carrier SIMs.
Fully Writable Network Parameters
We specialize in SIM cards where all critical parameters can be customized. This is ideal for private networks, test environments, and specialized deployments. Our offerings include:
- Writable IMSI SIM Cards: Customize the International Mobile Subscriber Identity.
- Writable Ki SIM Cards: Program the master Authentication Key.
- Writable ICCID SIM Cards: Set your own unique Integrated Circuit Card Identifier.
- Writable OP or OPc SIM Cards: Configure the Operator Variant algorithm for authentication.
- Writable KEY SIM Cards: Gain full control over cryptographic keys.
- Writable SPN SIM Cards: Define the Service Provider Name displayed on devices.
- Writable MNC & MCC SIM Cards: Set the Mobile Network Code and Mobile Country Code.
Our writable imsi sim cards free you from vendor lock-in, providing a blank canvas for your network identity.
Re-programmable (Not One-Time Burn) for Maximum Value
Unlike single-use cards, all HKCARD re-programmable (not one-time burn) SIM cards can be erased and rewritten multiple times. This makes them a cost-effective and sustainable choice for iterative development, lab testing, and evolving network requirements. They are fully programmable using standard PC/SC tools (e.g., pySim), ensuring a smooth workflow for your engineering teams.
Technology Leadership in 4G LTE and 5G NR
Stay ahead of the curve with our advanced USIM solutions.
Next-Generation Programmable 5G SIM Cards
HKCARD is at the forefront of 5G innovation, offering:
- Custom SIM cards for 4G LTE & 5G NR Networks.
- Programmable 5G NR 3GPP R16 SA 5G SIM Card for standalone network deployments.
- 5G SA 128K SIM and 5G SA sim card options optimized for 5G applications.
- SUCI SIM card support, enhancing privacy by concealing the subscriber identity as per 3GPP specifications.
Our HKCARD’s Programmable SIM Cards for 5G Networks ensure your projects are ready for the future of mobile communication.
Robust USIM / LTE SIM Cards
Our portfolio is not limited to GSM-only cards. We provide comprehensive USIM / LTE SIM cards, including:
- 4G LTE/WCDMA blank cards for multi-mode operations.
- IoT/Evaluation SIM Cards perfect for M2M and device testing.
- Multi network 4g volte sim card capabilities for high-definition voice services.
- USIM 4G, 128K USIM, and USIMLTE variants for all your 4G needs.
Looking for Sysmocom Alternatives? Choose HKCARD’s Programmable Test SIM Cards
Many customers search for or use sysmocom SIM card / sysmocom SIM cards for their development needs. HKCARD is proud to offer form-, function-, and file-system-compatible alternatives that provide better availability and highly competitive pricing.
Full Compatibility with Sysmocom and Open-Source Tools
Our cards are a direct, reliable replacement for popular sysmocom sim models, including:
- sysmoISIM-SJA2 (also known as SJA2 or sysmoisim-sja2)
- sysmoUSIM-SJS1 (or sysmousim-sjs1)
- sysmoISIM-SJA5 (or sysmoisim-sja5)
HKCARD’s programmable SIMs work smoothly with:
- pySim and other PC/SC-based sim programming tools.
- Open-source stacks for LTE/5G, including Open5GS, srsRAN, and similar setups.
- USIM test solution environments in labs and universities.
If you are currently relying on Sysmocom products, switch to HKCARD for a seamless transition with significant cost and lead-time advantages.
Comprehensive Product Range and Physical Variants
We supply SIM cards in every shape, size, and configuration your project demands.
- Available Form Factors: 2FF (Mini), 3FF (Micro), & 4FF (Nano) SIM Cards, often in a convenient trio-cut format.
- Memory Options: 128K SIM, 256K SIM, and 512K SIM to accommodate Java Card applets and large files.
- Physical Types: White SIM card (or white sims) for branding, blank sim cards, empty sim card, sim dummy, and even fake sim cards for mechanical testing.
- Specialized Cards: We also manufacture NFC SIM / sim card nfc for contactless payments (sim wallet nfc), Java SIM card, CDMA SIM card (RUIM card), and blank eSIM solutions.
- Wholesale & MVNO: We are a premier sim cards wholesale supplier offering bulk sim orders, white label mvno sim cards, and custom sim card creation.
Frequently Asked Questions (FAQ)
Q1: What is a programmable SIM card?
A: A programmable SIM card allows you to write or change key parameters like the IMSI, Ki, ICCID, and OPc. Unlike standard carrier SIMs, which are locked, our cards provide full control for network testing, private LTE/5G, and development.
Q2: Are HKCARD SIMs a direct replacement for Sysmocom cards like the SJA2?
A: Yes, absolutely. Our cards are designed to be form-, function-, and file-system-compatible with models like the sysmoISIM-SJA2. They work with the same tools (like pySim) but offer better availability and pricing.
Q3: What tools do I need for SIM programming?
A: You can use any standard PC/SC smart card reader and open-source software like pySim. Our cards follow ETSI standards, ensuring broad compatibility with sim personalize tools.
Q4: Do your cards support 5G Standalone (SA) networks?
A: Yes. We offer a Programmable 5G NR 3GPP R16 SA 5G SIM Card that supports 5G SA architecture, including SUCI for enhanced privacy.
Q5: What form factors are available?
A: We provide all standard form factors: 2FF (Mini-SIM), 3FF (Micro-SIM), and 4FF (Nano-SIM). Most are supplied as a convenient 3-in-1 “trio” card.
Q6: Are your SIM cards re-programmable?
A: Yes. All our programmable cards are re-programmable (not one-time burn). You can erase and rewrite them hundreds of times, making them perfect for R&D and lab use.
Q7: Can I order white label SIM cards for my MVNO?
A: Certainly. We are a leading supplier of white label mvno sim cards. We can provide white sim cards with custom printing and pre-programmed profiles for your specific needs.
Q8: What memory capacities do you offer?
A: We offer a range of memory sizes, including the most common 128K SIM (and 128K USIM), as well as 256K SIM and 512K SIM for more complex applications.
Q9: Do you support NFC technology?
A: Yes, we manufacture NFC SIM cards that can be used for contactless payment systems, transit passes, and other sim wallet nfc applications.
Q10: What is the minimum order for bulk SIM cards?
A: As a sim card wholesale supplier, we are flexible. We support small test batches starting from 10-50 cards, with competitive pricing for bulk sim orders of 1,000 cards or more.
Contact HKCARD Today for a Custom Quote
Ready to take control of your network? Partner with a reliable sim card supplier with over a decade of proven excellence. Whether you need a powerful Sysmocom alternative, custom sim cards for your IoT project, or bulk sim cards for your MVNO, HKCARD is here to help.
Contact us today to discuss your requirements and receive a no-obligation quote. Our team is ready to help you find the perfect sim card solutions.
- Sysmocom SJA2 Alternative: HKCARD’s Writable SIM Cards for pySim
- Wholesale Blank SIM Cards: 5G & 4G LTE Programmable USIMs
- Writable IMSI & Ki SIM Cards for Private 5G/LTE Network Testing
- Custom SIM Card Manufacturer for MVNO, IoT & Open5GS/srsRAN
- Re-Programmable 5G NR SA SIM Cards: Full 3GPP R16 & SUCI Support
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- :“A collection of HKCARD programmable SIM cards in 2FF, 3FF, and 4FF trio format, showing the blank white surface ready for custom IMSI, Ki, and ICCID programming.”
- “An engineer using a PC/SC smart card reader with pySim software to program a Sysmocom-compatible SJA2 alternative SIM card from HKCARD for a 5G test network.”
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
