Programmable SIM Cards | 4G LTE, 5G SA, IoT | Sysmocom Alternative – HKCARD
HKCARD is your trusted SIM card manufacturer with 15+ years of experience supplying programmable SIM cards for 4G, 5G NR, IoT. Compatible with pySim, Open5GS, srsRAN & Sysmocom (SJA2, SJS1). Fast shipping, custom SIMs, white label MVNO.
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Empowering Global Connectivity with Reprogrammable SIM Cards
HKCARD ELECTRONICS CO., LIMITED is a globally trusted SIM card supplier with over 15 years in the mobile phone SIM cards industry. We are a direct SIM card manufacturer, providing high-quality, fully programmable and writable SIM cards for applications including:
- 4G GSM/LTE
- 5G NR Standalone (3GPP Release 16)
- M2M & IoT use cases
- R&D, Testing, Evaluation SIMs
- MVNO white labeling
Unlike one-time programmed cards, HKCARD’s reprogrammable SIM cards support multiple programming cycles and are form-, function-, and file system-compatible with Sysmocom products and open-source platforms.
Discover Our Full Range of Writable & Programmable SIM Card Solutions
✅ Writable SIM Card Parameters Supported:
- Writable IMSI SIM Cards (Writable imsi sim cards free for testing available)
- Writable Ki SIM Cards
- Writable ICCID SIM Cards
- Writable OP or OPc SIM Cards
- Writable KEY SIM Cards
- Writable SPN SIM Cards
- Writable MNC & MCC SIM Cards
All programmable SIMs are compatible with PC/SC tools like pySim and scripting for test automation and SIM personalization.
Application Scenarios Covered by HKCARD Programmable SIM Cards
🔹 4G LTE / WCDMA Blank Cards
🔹 USIM / LTE SIM Cards (not GSM-only)
🔹 Blank SIM Cards for IoT & M2M
🔹 Custom SIM cards for 4G & 5G NR Networks
🔹 Programmable SIM Card for 5G SA (3GPP R16)
🔹 Evaluation SIMs for Open5GS / srsRAN / Amarisoft
🔹 Java SIM Cards with custom applets
🔹 NFC SIM cards for wallets and smart access (sim wallet nfc)
🔹 Dummy SIM Cards / Fake SIM for device UX testing
We also support:
- Blank eSIM solutions
- SUCI SIM cards (for 5G privacy testing)
- 128K SIM / 256K SIM / 512K SIM memory options
- Half SIM Card LTE Trio (2FF, 3FF, 4FF) configurations
Why HKCARD Over Others?
- ✅ Sysmocom-compatible alternatives – for SJA2, SJA5, SJS1
- ✅ Support for white SIM cards, SIM blanks, multinetwork 4G VoLTE SIMs, cdma sim cards, programmable SIM cards, and more
- ✅ Java Card and custom file structure support
- ✅ Fast global shipping and factory-direct pricing
- ✅ Enterprise-grade test SIMs ready to use with commonly deployed 5G testbeds
- ✅ Full compatibility with:
- pySim
- sysmoISIM-SJA2 / SJA5
- sysmoUSIM-SJS1
- Open5GS, srsRAN, OpenAirInterface
- USIM test environments in labs & universities
💡 Tip: Many customers search for “sysmocom SIM cards,” “sysmoISIM-SJA2,” “sim programming tool,” or “blank SIM card Airtel.” HKCARD cards offer better pricing, availability, and performance.
Frequently Asked Questions (FAQs)
Q1: What are programmable SIM cards?
They’re blank SIM cards you can configure with pySim or proprietary tools. HKCARD’s cards support full re-programming of IMSI, Ki, ICCID, OP, MNC, MCC, etc.
Q2: Are they compatible with Sysmocom sims like sysmoISIM-SJA2?
Absolutely. HKCARD cards are 100% compatible with SJA2, SJS1, and SJA5 cards from Sysmocom.
Q3: What makes HKCARD programmable SIMs different?
We offer full file system access, better delivery times, competitive pricing, and high reusability—not one-time burn chips.
Q4: Can I use PCSC tools like pySim?
Yes. All of our programmable SIM cards are pySim compatible. You can also use your own Java Card/CLA-compliant tools.
Q5: Do you offer white label solutions?
Definitely. We provide white label MVNO SIM cards, SIM card personalization, and full branding services.
Q6: Do you support NFC SIM / SIM wallet cards?
Yes. Our SIM Wallet NFC cards and NFC/UIM card formats support smart payments, access control, and authentication solutions.
Q7: What’s the lead time for bulk SIM card orders?
Production lead time is usually 5–7 days. We offer bulk SIM delivery anywhere globally with optional customs documentation support.
Q8: Can I get programmable SIM cards for 5G SA networks?
Yes. Our 5G SA programmable SIM cards comply with 3GPP Release 16, including 5G USIM / SUCI support.
Q9: What’s the memory size available?
128K, 256K, and 512K cards are available, compatible with high-capacity security environments and Java application storage.
Q10: How do I request samples or place a bulk order?
Simply email us at byronhan@cardmfg.com We’ll support you from inquiry to customization.
1 :
“HKCARD programmable SIM cards with writable IMSI, KI, ICCID and support for 5G NR, LTE, and IoT testing”
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“Developer using pySim tool with PC/SC reader to configure HKCARD blank 4G/5G USIM card (Sysmocom-compatible)”
- Looking for Sysmocom SIM Card Alternatives? Discover HKCARD Solutions
- Writable IMSI SIM Cards & 5G USIM Solutions – Powered by HKCARD
- Custom SIM Cards for IoT & 5G Testing Labs – HKCARD Programmable SIMs
- Bulk Blank SIM Cards & White Label MVNO SIMs for 4G/5G
- Free Writable IMSI SIM Cards for Developers – Apply with HKCARD Today
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Ready to Order? Start Your Project with HKCARD Today
Let HKCARD support your next telecom or R&D venture with industry-grade, customizable programmable SIM cards.
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
🏭 Manufacturer direct | 🚚 Global shipping | 🛠️ Developer-ready tools
