Programmable SIM Cards for 4G/5G & IoT | HKCARD Electronics – Sysmocom Compatible
HKCARD Electronics is a reliable supplier of programmable SIM cards for 4G LTE, 5G NR, and IoT. We offer writable IMSI, Ki, ICCID, and more using pySim and compatible with Sysmocom (SJA2, SJS1). Fast shipping, bulk pricing, and 15+ years of expertise.
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HKCARD Electronics – Your Reliable SIM Card Manufacturer for 4G, 5G & IoT
With over 15 years of experience in the mobile phone SIM cards industry, HKCARD ELECTRONICS CO., LIMITED is a trusted SIM card manufacturer and global supplier of programmable, re-programmable (not one-time burn) SIM cards. We specialize in delivering high-quality blank SIM cards for 4G LTE, 5G NR, IoT, and testing environments, serving telecom operators, MVNOs, IoT developers, universities, and private network labs worldwide.
Our SIM cards support full customization of critical network parameters including IMSI, Ki, ICCID, OP/OPc, MNC, MCC, SPN, and KEY, using industry-standard tools like pySim and open-source platforms such as Open5GS and srsRAN.
Why Choose HKCARD for Programmable SIM Cards?
✅ 15+ Years in the SIM Card Industry – Proven track record with telecom operators and developers
✅ Re-programmable (Not One-Time Burn) SIM Cards – Ideal for testing, R&D, and dynamic environments
✅ Wide Range of Writable Parameters – IMSI, Ki, ICCID, OP/OPc, MNC, MCC, SPN, KEY
✅ Compatible with Sysmocom, pySim & Open-Source Tools – Works with sysmoISIM-SJA2, SJS1, SJA5
✅ Multiple Form Factors – 2FF, 3FF, 4FF, nano-USIM, and half-SIM trio options
✅ Fast Global Shipping & Bulk Discounts – Factory-direct pricing for volume orders
Our Complete Range of Programmable SIM Card Solutions
Writable & Reprogrammable SIM Cards
- Writable IMSI SIM Cards (writable imsi sim cards free samples available for qualified projects)
- Writable Ki SIM Cards
- Writable ICCID SIM Cards
- Writable OP or OPc SIM Cards
- Writable KEY SIM Cards
- Writable SPN SIM Cards
- Writable MNC SIM Cards
- Writable MCC SIM Cards
All of these parameters can be modified using PC/SC tools like pySim, making our SIMs ideal for network testing, security research, and IoT development.
4G LTE & 5G NR SIM Solutions
- USIM / LTE SIM Cards (not GSM-only)
- 4G LTE/WCDMA Blank Cards – For multi-network and VoLTE testing
- Programmable SIM Card 5G – Future-proof your network
- 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 – Compliant with standalone 5G core networks
- 5G SA 128K SIM / 5G USIM – High-capacity memory for advanced applications
- SUCI SIM Card – Supports Subscription Concealed Identifier for 5G privacy
IoT, Evaluation & Specialized SIMs
- IoT/Evaluation SIM Cards – For NB-IoT, LTE-M, and smart device testing
- NFC SIM / SIM Card NFC – For contactless payments, access control, and sim wallet NFC solutions
- Java SIM Cards – For custom applet loading and secure applications
- Dummy SIM / Fake SIM / UIM / RUIM Cards – For mechanical and UX testing
- Sim Dummy / Sim Blank / Empty SIM Card – Ready for personalization
- White Label MVNO SIM Cards – Branded SIMs for resellers and operators
- White SIM Cards / Blank SIM Cards / Bulk SIM – Ideal for large-scale deployments
Available SIM Card Form Factors
- 2FF / 3FF / 4FF SIM Cards (Standard, Micro, Nano)
- Nano-USIM
- Half SIM Card LTE Trio (2FF/3FF/4FF Punch-Out)
- Multi-Network 4G VoLTE SIM Cards
- 128K USIM, 256K SIM, 512K SIM – High-memory options
- Sim Card NFC, SIM Wallet NFC, eSIM (on request)
Compatibility with Sysmocom, pySim & Open-Source Tools
Many developers and researchers search for or use:
- sysmocom SIM card
- sysmocom SIM cards
- sysmoISIM-SJA2
- sysmoUSIM-SJS1
- sysmoISIM-SJA5 (SJA2)
HKCARD offers fully compatible programmable SIM cards that:
- Work seamlessly with pySim and other PC/SC-based SIM programming tools
- Integrate smoothly with Open5GS, srsRAN, and other open-source LTE/5G stacks
- Are fully functional in USIM test solution environments in labs and universities
Looking for Sysmocom alternatives? Choose HKCARD’s programmable test SIM cards for better availability, faster delivery, and competitive pricing.
Who Uses HKCARD Programmable SIM Cards?
- Telecom operators & MVNOs deploying 4G/5G services
- IoT device manufacturers & network testers
- University labs & private 5G research centers
- Security & privacy engineers (SUCI, Ki, OPc testing)
- NFC payment & smart access system developers
- Blank SIM card & eSIM solution providers
Frequently Asked Questions (FAQ)
Q1: What is a programmable SIM card?
A SIM card that allows you to modify key parameters like IMSI, Ki, ICCID, OP/OPc, MNC, and MCC using tools like pySim. HKCARD’s SIMs are re-programmable, not one-time burn.
Q2: Are your SIM cards compatible with Sysmocom products?
Yes. Our cards are fully compatible with sysmoISIM-SJA2, sysmoUSIM-SJS1, and sysmoISIM-SJA5 (SJA2).
Q3: Can I program the SIM cards with pySim?
Absolutely. All of our SIMs work with pySim and standard PC/SC readers.
Q4: Do you offer free writable IMSI SIM card samples?
Yes, we provide writable imsi sim cards free for qualified developers and researchers.
Q5: What form factors do you support?
2FF, 3FF, 4FF, nano-USIM, and half-SIM trio configurations.
Q6: Are NFC SIM cards available?
Yes. We offer NFC SIM and SIM wallet NFC cards for payments and access control.
Q7: Do you supply blank SIM cards for Airtel or other carriers?
We provide blank sim card airtel-style SIMs that you can fully customize.
Q8: What is a SUCI SIM card?
A SUCI SIM card conceals the user’s real identity in 5G networks. Ours supports this feature for 5G security testing.
Q9: Can I order bulk SIM cards?
Yes. We are a leading sim card manufacturer and sim cards wholesale supplier with competitive pricing for volume orders.
Q10: How do I get started?
Contact us at byronhan@cardmfg.com or visit our website to request samples or a quote.
1 :
“HKCARD programmable SIM cards in 2FF, 3FF, and 4FF formats, ideal for 4G LTE, 5G NR, and IoT testing with pySim compatibility.”
2 :
“Developer using pySim to program a blank 5G SA SIM card from HKCARD, compatible with Open5GS and sysmoISIM-SJA2 alternatives.”
- Sysmocom Alternatives: HKCARD’s Programmable Test SIM Cards for 4G/5G
- Writable IMSI & Ki SIM Cards – Free Samples Available from HKCARD
- Custom SIM Cards for 4G LTE & 5G NR – Factory Direct from HKCARD
- Blank SIM Cards for IoT, MVNO & Lab Testing – Bulk Orders Welcome
- How to Program a SIM Card with pySim – HKCARD’s Developer Guide
#ProgrammableSIM #5GSIM #4GLTE #SysmocomAlternative #pySim #IoTSIM #BlankSIM #NFCsim #MVNOSIM #HKCARD
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
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