HKCARD ELECTRONICS CO., LIMITED: Your Trusted Source for Programmable LTE USIM & Blank Writable SIM Cards (4G/5G)

 HKCARD Electronics – Leading Supplier of Programmable LTE USIM & Blank Writable SIM Cards for 4G & 5G Networks

HKCARD ELECTRONICS CO., LIMITED stands as a reliable supplier in the global mobile phone SIM cards industry, specializing in blank/writable SIM cards and programmable USIM cards for LTE and 5G applications. With over 15 years of expertise, we empower developers, network operators, and testers worldwide with high-quality, customizable SIM solutions — including programmable LTE USIM cards similar to sysmoUSIM, blank 4G/5G USIM cards, and writable SIM cards compatible with leading tools like HID OMNIKEY 3121 USB Smart Card Reader, sysmocom SIM card programming software, and SIM card programmer hardware.

Whether you need empty SIM cards, custom IMSI/Ki/OPC programming, or bulk programmable SIM cards for IoT, testing, or deployment, HKCARD delivers precision, reliability, and innovation.

 

HKCARD Electronics: Programmable LTE USIM Cards, Blank Writable SIMs (4G/5G), Sysmocom Compatible – 15+ Years of Expertise

 

HKCARD Electronics – Your trusted supplier of blank, writable, and programmable USIM cards (4G LTE, 5G SA). Customize IMSI, Ki, ICCID with sysmocom-compatible tools like HID OMNIKEY 3121 readers. Bulk orders welcome. ISO-certified SIM personalization.

 

https://www.hkcard-electronics.com/programmable-sim-cards

 Unmatched Expertise in Blank & Programmable SIM Cards

For over 15 years, HKCARD ELECTRONICS CO., LIMITED has been a cornerstone supplier in the mobile phone SIM cards industry. Our programmable USIM cards — including programmable LTE USIM cards similar to sysmoUSIM — and blank writable SIM cards serve telecom operators, IoT developers, cybersecurity researchers, and testing labs globally. We provide empty SIM cards, writable programmable blank SIM USIM cards, and 5G SA 128K SIMs engineered for flexibility, security, and compatibility.

Our blank 4G SIM cards and blank 5G SIM cards are ideal for custom network provisioning, while white triple-format blank sim cards reduce inventory complexity by supporting standard, micro, and nano devices.

Full Spectrum of Programmable SIM Solutions

We offer comprehensive SIM card programming services and hardware-ready cards for every need:

  • Blank / Writable USIM Cards (4G LTE): Fully customizable with IMSI, Ki, ICCID, MSISDN, and more.
  • Programmable 5G SIM Cards: Supports 5G Standalone (SA) and Non-Standalone (NSA) with 128K memory for complex configurations.
  • Sysmocom-Compatible SIMs: Optimized for use with sysmocom SIM card programming tools, including support for sysmoisim-sja5, sysmousim-sjs1, and sysmoisim-sja2 profiles.
  • SUCI SIM Cards: Subscription Concealed Identifier cards for enhanced 5G subscriber anonymity and security.
  • Dummy SIMs & Test SIMs: For hardware validation without network access.
  • Blank White Triple Format SIMs: One card, three sizes (standard/micro/nano) — perfect for prototyping and mass deployment.

All cards are compatible with SIM card reader writers, SIM personalize tools, and programmable SIM card readers like the HID OMNIKEY 3121 USB Smart Card Reader & Writer.

Key Features & Capabilities

✅ Full Parameter Programming:
Set IMSI, Ki (Authentication Key), OPC, ICCID, and PIN configurations directly on blank cards.

✅ Sysmocom & Open Source Tool Compatibility:
Seamless integration with sysmocom SIM card programming software and hardware like SIM card programmers and reader/writers.

✅ High-Security & Rewritable:
Our writable programmable blank sim USIM cards support multiple rewrites, ideal for iterative testing and dynamic provisioning.

✅ 5G SA Ready:
Blank 5G SIM cards with 128K memory support 5G Standalone networks, SUCI, and advanced encryption.

✅ Bulk Supply & Custom Packaging:
We deliver bulk sim cards with options for custom printing, serialization, and tamper-proof packaging.

✅ Global Compliance:
Meet ETSI, 3GPP, and IoT carrier certification requirements with our programmable USIM cards.

Applications Across Industries

🔧 Network Testing & Carrier Certification

Engineers use our programmable SIM cards to simulate operator profiles, test roaming, validate 5G SA/NSA handovers, and benchmark performance. Our test sim cards are essential for pre-deployment validation.

🌐 IoT & Embedded Connectivity

Deploy programmable SIM cards in smart meters, industrial sensors, connected vehicles, and wearable devices. Our writable SIM cards enable remote provisioning across thousands of devices.

🔒 Security Research & Red Teaming

White-hat hackers and security researchers leverage our blank USIM cards to clone, analyze, and simulate attacks using sysmocom-compatible setups and SIM card programmers.

🎓 Academic & R&D Innovation

Universities and labs use our empty SIM cards and programmable SIMs for 5G protocol research, LTE/5G stack development, and SIM card programming training.

📱 Device Manufacturing & Customization

OEMs and ODMs integrate our programmable SIM cards into devices requiring field-upgradable network profiles — no need for pre-provisioned carrier SIMs.

 Supported Formats & Tools

ProductFormatProgrammable FieldsCompatible Tools
Blank USIM 4GStandard, Micro, NanoIMSI, Ki, ICCID, MSISDNHID OMNIKEY 3121, OMNIKEY 5×21, Generic Card Readers
Programmable 5G USIMTriple FormatIMSI, Ki, SUCI, OP, 5G Security Profilessysmocom sim card programmer, AT commands, Custom SDKs
Writable SIM CardsWhite Triple FormatRewritable Network KeysSIM Personalize Tools, Proxmark3, Proxmark4
Blank 5G SA 128KNano onlyFull 5G stack + SUCIsysmocom, Open5GS, Custom Tooling

Tip: Use SIM card reader writer combos like HID OMNIKEY 3121 with our writable programmable blank sim USIM cards for rapid prototyping.

 Frequently Asked Questions (FAQ)

Q1: What is a programmable USIM card?
A: A programmable USIM card (like our programmable LTE USIM cards) is a blank rewritable SIM that allows you to write custom IMSI, Ki, ICCID, and OPC values for testing, IoT deployment, or network simulation.

Q2: What’s the difference between blank, writable, and programmable SIM cards?
A:

  • Blank SIM: Unconfigured chip.
  • Writable SIM: Can be written once or multiple times (rewritable).
  • Programmable SIM: Designed for dynamic parameter updates via tools like sysmocom SIM card programming software.

Q3: Are your blank 4G/5G SIMs compatible with sysmocom?
A: Absolutely. Our sysmocom SIM cards (including support for sysmoisim-sja5, sysmousim-sjs1) are 100% compatible with sysmocom’s open-source toolchain and readers.

Q4: Can I use a standard SIM card writer to program your cards?
A: Yes. Our programmable SIM cards work with SIM card reader writers such as HID OMNIKEY 3121 USB Smart Card Reader & Writer, generic ISO 7816-compliant devices, and SIM personalization tools.

Q5: What is SUCI in your 5G SIMs?
A: SUCI (Subscription Concealed Identifier) masks real IMSI in 5G networks. Our SUCI SIM cards protect user identity during authentication and are ideal for 5G SA 128K SIM deployments.

Q6: Do you offer bulk programmable SIM cards?
A: Yes. We specialize in bulk sim cards for large-scale IoT rollouts, testing labs, and OEM programs. Contact us for volume pricing.

Q7: What tools do I need to program your blank SIMs?
A: You’ll need a SIM card programmer (hardware) and software like sysmocom SIM card programming tools or SIM personalization tools. We provide full documentation.

Q8: Are your blank 5G SIMs ready for 5G SA networks?
A: Yes. Our blank 5G SIM cards are pre-configured for 5G Standalone (SA) operation with 128K memory and support SUCI, 5G AKA, and encrypted communications.

Q9: What is the difference between USIM and SIM?
A: USIM (Universal Subscriber Identity Module) is the 3GPP standard evolved from SIM, required for 4G/5G. It supports stronger authentication, USSD, and SIM Application Toolkit (STK). All our cards are USIM-compliant.

Q10: Can I get blank SIMs with printing (e.g., ICCID labeling)?
A: Yes. We offer SIM card printing services on blank white triple format sim cards and custom card packaging for branding and tracking.

Q11: How long do blank SIM cards last in storage?
A: Our empty sim cards remain stable for up to 10 years under standard conditions.

Q12: Do you support programmable sim card 5g for roaming testing?
A: Yes. Our 5G SA 128K SIMs allow you to simulate multiple operator profiles to test international roaming, handover, and network selection logic.

Why Choose HKCARD ELECTRONICS?

✅ 15+ Years in SIM Card Manufacturing: Deep technical mastery and supply chain stability.
✅ 100% Sysmocom Compatibility: Certified for sysmocom SIM card programming workflows.
✅ Wide Format Support: Blank white triple format sim cards reduce SKU complexity.
✅ Custom IMSI/Ki/OPC Programming: Full control over authentication keys and identifiers.
✅ Fast Turnaround: Most orders ship within 48 hours.
✅ Global Reach: Trusted by partners in 40+ countries for writable sim cards, test kits, and IoT modules.
✅ Quality Assurance: All cards pass ATR (Answer to Reset) validation and ETSI compliance checks.

 Order Your Programmable SIM Solutions Today

Ready to unlock the full potential of your mobile network projects?

Contact HKCARD ELECTRONICS CO., LIMITED now for:

  • Sample programmable LTE USIM cards
  • Bulk quotes for blank 4G/5G USIM cards
  • Custom SIM card printing and packaging
  • Support for sysmocom sim card programming

HKCARD ELECTRONICS CO.,LIMITED
Whatsapp/wechat:+8615817372512
Skype/Teams：byron1681
Email：byronhan@cardmfg.com


📍 Location: Hong Kong / Global Fulfillment Center

We respond within 24 hours for technical inquiries and quotes.

 

  1. : Close-up of a HKCARD blank white triple-format SIM card being inserted into a mobile testing device with a HID OMNIKEY 3121 USB Smart Card Reader connected, used for programming 4G LTE USIM parameters like IMSI and Ki.
  2. : High-resolution image of a 5G SA 128K SIM card being programmed via sysmocom software, showing code execution on a laptop interface, ideal for programmable SIM card 5G testing and development.

 

#ProgrammableSIM #BlankUSIM #WrittableSIM #5GSIMCard #4GSIMCard #SIMCardProgramming #SysmocomCompatible #SIMReaderWriter #HIDOMNIKEY #IoTConnectivity

 

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  5. “Reliable Supplier of Rewritable USIM Cards for IoT, Roaming Tests, and Network Security Research – 15+ Years Experience”

HKCARD ELECTRONICS CO.,LIMITED
Whatsapp/wechat:+8615817372512
Skype/Teams：byron1681
Email：byronhan@cardmfg.com

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