HKCARD ELECTRONICS: Writable IMSI/Ki/OPc SIM Cards | Programmable 5G NR, LTE, & Sysmocom Alternatives
HKCARD offers re-programmable, writable SIM cards for 5G NR R16 SA, 4G LTE, and IoT. Compatible with pySim, Sysmocom (SJA2/SJS1), and Open5GS. Bulk, white-label, and custom solutions available.
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HKCARD ELECTRONICS: Your Trusted Supplier for Writable IMSI, Programmable 5G/4G SIM Cards & Sysmocom Alternatives
With over 15 years of expertise in the mobile phone SIM cards industry, HKCARD ELECTRONICS CO., LIMITED is a leading manufacturer of re-programmable, writable SIM cards for 5G NR, 4G LTE, IoT, and MVNO applications. Our SIM cards are designed for labs, universities, private networks, and enterprise IoT, offering seamless compatibility with open-source LTE/5G stacks and Sysmocom-based test environments.
1. Writable & Re-Programmable SIM Cards (Not One-Time Burn)
HKCARD provides fully re-programmable SIM cards that allow engineers to modify and update key parameters using PC/SC tools such as pySim, sim personalize tools, and other SIM card creator utilities. These cards are ideal for USIM test solution environments, private 4G/5G networks, and MVNO provisioning.
Writable Parameters Include:
- Writable IMSI SIM Cards
- 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
Searchable Terms:
- “writable imsi sim cards free”
- “writable imsi sim cards”
2. 5G & 4G Programmable SIM Cards
5G NR R16 SA SIM Cards
- Programmable 5G NR 3GPP R16 SA 5G SIM Card
- 5G SA 128k SIM and 5G SA SIM Card
- Custom SIM cards for 4G LTE & 5G NR Networks
- Blank eSIM for embedded SIM deployments
4G LTE/WCDMA Blank Cards
- USIM / LTE SIM Cards (not GSM-only)
- 4G LTE/WCDMA blank cards
- Multi-network 4G VoLTE SIM card
- 4G GSM SIM card for legacy device testing
IoT/Evaluation SIM Cards
- Blank SIM cards, dummy sim card, fake sim
- TD SIM, parking sim cards, 4G VoLTE tester
3. Available Form Factors
HKCARD offers SIM cards in all standard form factors:
- 2FF / 3FF / 4FF SIM Cards
- Nano-USIM, half simcard LTE trio, simcard half LTE
- White sim card, programmable sim card, sim dummy, empty sim card
- SA SIM card, CDMA SIM card, UIM card, RUIM card
4. Compatibility with Sysmocom, pySim, and Open-Source Tools
Many customers search for or use Sysmocom SIM cards, including:
- sysmocom SIM card / sysmocom SIM cards / sysmocom SIM
- sysmoISIM-SJA2, sysmoUSIM-SJS1, sysmoISIM-SJA5, SJA2
HKCARD offers compatible programmable SIM cards that work seamlessly 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
Looking for Sysmocom Alternatives?
Choose HKCARD’s Programmable Test SIM Cards for form-, function-, and file-system-compatible alternatives with better availability and competitive pricing.
5. White Label & Bulk SIM Cards
White Label MVNO SIM Cards
- Blank sim cards, white label sim cards, offbrand sim
- Custom printing, branding, and packaging
- Bulk sim orders with fast turnaround
Specialized Variants
- Blank sim card Airtel, dummy sim card Airtel
- 128k SIM, 256k SIM, 512k SIM
- White sim, white sims, USIM 4G, USIMLTE, 128k USIM
6. NFC & Secure SIM Solutions
- SIM card NFC, NFC SIM, SIM wallet NFC
- SIM cards near field communication market
- SUCI SIM card (5G privacy-enabled SIMs)
- SIM card creator tools for SIM programming
7. Java SIM & Custom SIM Cards
- Java SIM card, SIM Java, SIM programming
- Custom SIM card for 4G LTE & 5G NR Networks
- SIM card suppliers, SIM card wholesale, SIM cards wholesale supplier
8. Frequently Asked Questions (FAQ)
Q1: Are HKCARD SIM cards compatible with pySim?
A: Yes. Our programmable SIM cards are fully compatible with pySim and other PC/SC-based SIM programming tools.
Q2: Can I rewrite IMSI, Ki, OPc, ICCID multiple times?
A: Yes. Our re-programmable (not one-time burn) SIM cards allow multiple updates to IMSI, Ki, OPc, ICCID, and other parameters.
Q3: Do you offer 5G Standalone (SA) R16 SIM cards?
A: Yes. We offer Programmable 5G NR 3GPP R16 SA 5G SIM Cards and 5G SA 128k SIM options.
Q4: Are your SIM cards compatible with Sysmocom workflows?
A: Yes. HKCARD offers form-, function-, and file-system-compatible alternatives to Sysmocom SIM cards (e.g., sysmoISIM-SJA2, sysmoUSIM-SJS1, sysmoISIM-SJA5, SJA2).
Q5: Do you provide white label SIM cards for MVNOs?
A: Yes. We offer white label MVNO SIM cards, blank sim cards, and custom branding options.
Q6: What form factors are available?
A: We offer 2FF / 3FF / 4FF SIM Cards, including nano-USIM, half simcard LTE trio, and simcard half LTE.
Q7: Do you support NFC-enabled SIM cards?
A: Yes. We provide SIM card NFC, NFC SIM, and SIM wallet NFC for near field communication market applications.
Q8: Are your SIM cards suitable for IoT and embedded devices?
A: Yes. We offer blank eSIM, blank SIM cards, and evaluation SIM cards for IoT/Evaluation SIM Cards and embedded SIM use cases.
Q9: Do you offer Java SIM cards?
A: Yes. Our Java SIM cards support custom applets and SIM Java programming for advanced use cases.
Q10: What is the difference between HKCARD and Sysmocom SIM cards?
A: HKCARD offers form-, function-, and file-system-compatible alternatives to Sysmocom SIM cards with better availability, competitive pricing, and customization options.
- HKCARD: Writable IMSI/Ki/OPc SIM Cards for 5G NR & LTE Networks
- Programmable 5G NR 3GPP R16 SA SIM Cards | HKCARD ELECTRONICS
- Sysmocom Alternatives: HKCARD’s Programmable Test SIM Cards
- Blank & White Label SIM Cards for MVNOs | HKCARD ELECTRONICS
- Re-Programmable SIM Cards Compatible with pySim & Open5GS
#HKCARDElectronics #ProgrammableSIM #5GSIM #SysmocomAlternative #pySim #Open5GS #BlankSIMCards #WhiteLabelSIM #SIMCardManufacturer #IoTSIMCards
- HKCARD Programmable 5G NR R16 SA SIM Cards in 2FF/3FF/4FF Form Factors
- Bulk White Label MVNO SIM Cards from HKCARD ELECTRONICS
Contact HKCARD ELECTRONICS
Get a Quote Today
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
Request samples or bulk pricing for your next 5G NR, 4G LTE, or IoT project today.
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