Programmable SIM Cards Manufacturer | Writable IMSI Ki 
4G LTE 5G SA 
USIM | HKCARD Electronics

HKCARD Electronics is a trusted programmable SIM card manufacturer with 15+ years experience. 
We supply writable IMSI, Ki, ICCID, OP/OPc SIM cards, 4G LTE USIM, 5G SA SIM, IoT SIM, 
NFC SIM, white label MVNO SIM cards and bulk SIM solutions worldwide. Contact us today.

https://www.cardmfg.com/programmable-sim-cards-writable
-imsi-ki-4g-lte-5g-sa-usim-supplier

 HKCARD Electronics – Programmable SIM Card Manufacturer for Writable IMSI, Ki, 4G LTE USIM & 5G SA Networks

HKCARD Electronics Co., Limited is a globally recognized programmable SIM card manufacturer and wholesale supplier with over 15 years of proven experience in the mobile phone SIM cards industry.

From writable IMSI SIM cards and re-programmable USIM 4G LTE cards to 5G SA NR SIM solutions, IoT evaluation SIM cards, NFC SIM cards, and custom white label MVNO SIM cards — HKCARD serves telecom operators, IoT developers, R&D laboratories, MVNO providers, and SIM card engineers across the globe.

Whether you need blank SIM cards for 5G standalone networks, sysmocom-compatible programmable SIM cards, or bulk SIM wholesale supply, HKCARD delivers reliable, high-quality products with fast global shipping and dedicated technical support.

Who We Are – 15+ Years of SIM Card Manufacturing Excellence

HKCARD Electronics Co., Limited was established to meet the growing global demand for flexible, programmable, and customizable SIM card solutions.

Over the past 15+ years, we have become a trusted SIM card supplier for:

• Mobile Network Operators (MNOs)
• Mobile Virtual Network Operators (MVNOs)
• Telecom equipment manufacturers
• IoT platform developers
• 4G VoLTE network testers
• 5G private network builders
• University and research laboratories
• SIM security researchers and developers

Our strength lies in combining advanced SIM manufacturing technology with deep technical expertise, allowing us to customize SIM cards to your exact specifications — from IMSI and Ki to OP/OPc, ICCID, SPN, MCC, and MNC parameters.

 Writable & Re-Programmable SIM Cards – Full Parameter Control

One of HKCARD’s most sought-after product lines is our range of writable and fully re-programmable SIM cards. Unlike one-time burn SIM cards, our cards allow engineers and developers to write, modify, and reprogram key parameters multiple times.

What Parameters Can Be Written?

Key advantage: All HKCARD programmable SIM cards are re-programmable and NOT one-time burn, giving you complete flexibility during development, testing, and deployment.

 Programmable SIM Cards Using PC/SC Tools & pySim

HKCARD’s programmable SIM cards are fully compatible with industry-standard PC/SC SIM programming tools, making them the preferred choice for engineers and developers worldwide.

Supported Programming Environments

• pySim – Open-source SIM card programming tool
• PC/SC-compatible readers – Standard smart card readers
• SIM personalize tools – Professional SIM personalization software
• Java SIM card environments – For SIM Java applet development
• SIM card creator platforms – Custom SIM profile creation
• Custom SIM programming workflows – Tailored to your pipeline

These tools allow users to freely configure IMSI, Ki, ICCID, OP/OPc, SPN, MCC, MNC, and other SIM file system parameters with precision and repeatability.

4G LTE USIM Cards – Not GSM-Only

HKCARD provides USIM 4G LTE cards that are fully compatible with modern LTE and WCDMA networks. These are not GSM-only SIM cards — they are designed for the demands of current 4G and evolving 5G network environments.

 4G LTE & WCDMA SIM Product Range

• 4G LTE / WCDMA Blank Cards – Ready for custom programming
• 128K USIM / 256K / 512K USIM – Multiple memory options
• Multi Network 4G VoLTE SIM Card – Multi-operator support
• 4G VoLTE Tester SIM – Network call quality testing
• Half SIM Card LTE Trio – Tri-cut 2FF/3FF/4FF combo
• TD-SIM – TD-LTE compatible SIM solution
• CDMA SIM Card / UIM Card / RUIM Card – Legacy and hybrid network support
• 4G GSM SIM Card – Backward-compatible GSM/LTE dual-mode

 Common Applications

• LTE product development and certification testing
• VoLTE call testing environments
• IoT gateway and module validation
• Enterprise private LTE network deployment
• Parking SIM card systems
• Global roaming simulation labs

5G Programmable SIM Cards – HKCARD’s 5G SA Network Solutions

As the world accelerates toward 5G, HKCARD is at the forefront of 5G programmable SIM card manufacturing. Our 5G SIM cards are specifically designed for Standalone (SA) 5G network architecture and meet 3GPP Release 16 standards.

HKCARD’s Programmable SIM Cards for 5G Networks

• Programmable 5G NR 3GPP R16 SA SIM Card
• 5G SA 128K SIM Card
• 5G SA SIM Card – Full SA network authentication
• 5G USIM – Next-generation subscriber identity module
• SUCI SIM Card – Subscriber Concealed Identifier support for 5G privacy
• Custom SIM Cards for 4G LTE & 5G NR Networks

Why 5G SA SIM Cards Matter

In 5G Standalone architecture, the SIM card plays a critical role in:

• SUCI (Subscription Concealed Identifier) generation for user identity privacy
• Enhanced mutual authentication (5G-AKA / EAP-AKA’)
• Network slicing identity management
• Low-latency IoT and edge computing connectivity

HKCARD’s 5G SA SIM cards support all these functions out of the box, making them the ideal choice for 5G private network developers and operators.

 IoT & Evaluation SIM Cards

HKCARD supplies IoT SIM cards and evaluation SIM cards designed for seamless integration into connected device ecosystems.

IoT SIM Features

• Lightweight SIM profiles optimized for IoT
• Long lifecycle reprogrammability
• Compatible with NB-IoT, LTE-M, and 5G NR IoT categories
• Support for remote SIM provisioning concepts
• Blank eSIM options available on request
• USIM Test Solution for IoT device validation

Typical IoT Use Cases

• Smart city sensor networks
• Industrial automation and monitoring
• Smart parking systems using parking SIM cards
• Connected vehicle telematics
• Agricultural IoT devices
• Medical device connectivity

 NFC SIM Cards & Smart SIM Solutions

HKCARD offers a growing range of NFC-enabled SIM cards catering to the expanding SIM cards near field communication market.

 NFC SIM Product Options

• SIM NFC / NFC SIM – Dual-interface SIM for contactless applications
• SIM Wallet NFC – Mobile payment and digital wallet integration
• SIM Card NFC – Embedded NFC antenna SIM solutions
• Java SIM Card – Programmable SIM with Java Card applet support

These solutions are widely used in:

• Mobile payment systems
• Transit ticketing
• Access control
• Loyalty program management
• Secure identity verification

White Label MVNO SIM Cards & Bulk SIM Supply

For businesses building their own mobile network brand, HKCARD provides comprehensive white label MVNO SIM card solutions and bulk SIM card wholesale supply.

White Label & Blank SIM Products

• White Label MVNO SIM Cards – Brand-ready SIM for MVNOs
• White SIM Cards / White SIM – Unbranded programmable SIM cards
• Blank SIM Cards / Blank SIM – Ready-to-program SIM stock
• Empty SIM Card – Clean SIM file system
• Offbrand SIM – Custom specification SIM cards
• Dummy SIM Card / Fake SIM / SIM Dummy – Display and testing purposes
• Nano-USIM – Latest form factor for modern devices
• Blank SIM Card Airtel-profile compatible – On-request customization

Bulk SIM Card Wholesale Services

HKCARD is a SIM card wholesale supplier capable of fulfilling large volume orders with:

• Consistent quality control across all batches
• Custom IMSI range allocation
• Pre-personalization services
• Secure packaging and logistics
• OEM/ODM branding available

SysmoSIM & Sysmocom-Compatible SIM Cards

HKCARD supplies sysmocom-compatible programmable SIM cards widely used in open-source telecom communities and research environments.

H3: Sysmocom-Compatible Models We Supply

These cards are widely used with:

• OpenBTS
• Osmocom
• Open5GS
• Free5GC
• srsRAN
• Magma Core

SIM Card Form Factors & Memory Specifications

HKCARD provides SIM cards across all standard form factors and memory sizes to ensure compatibility with any device or application.

Available Form Factors

Memory Configurations

Complete SIM Card Personalization & Programming Services

Beyond hardware supply, HKCARD offers end-to-end SIM card personalization services for customers requiring ready-to-deploy SIM cards.

Our Personalization Capabilities Include:

• ✅ IMSI range programming
• ✅ Ki / OP / OPc key injection
• ✅ ICCID assignment and encoding
• ✅ SPN (Service Provider Name) configuration
• ✅ MCC / MNC network code setup
• ✅ Java SIM applet installation
• ✅ SIM card solutions for MVNO launch
• ✅ USIM test solution configuration
• ✅ Custom SIM card profile development
• ✅ Sim personalize tools compatibility setup

Why Leading Companies Choose HKCARD Electronics

“HKCARD has been our trusted SIM card supplier for years. Their programmable USIM cards work perfectly with our 5G private network testbed.”
— Telecom R&D Engineer, Europe

HKCARD’s Competitive Advantages

• 15+ years of SIM card manufacturing expertise
• ISO-compliant production processes
• Flexible minimum order quantities for startups and enterprises
• Technical support from SIM experts
• Fast global shipping to 50+ countries
• Custom SIM solutions tailored to your project
• Compatible with all major open-source and commercial telecom stacks
• Continuous product updates aligned with 3GPP standards

Frequently Asked Questions About HKCARD SIM Cards

Q1: What is a writable IMSI SIM card, and how does it work?

A writable IMSI SIM card allows users to program the International Mobile Subscriber Identity (IMSI) — a unique number identifying a subscriber on a mobile network — directly onto the SIM using tools such as pySim or PC/SC-compatible software. HKCARD’s writable IMSI SIM cards enable full IMSI configuration without restrictions.

Q2: Are HKCARD SIM cards re-programmable or one-time burn?

All HKCARD programmable SIM cards are fully re-programmable and NOT one-time burn. You can write, erase, and reprogram parameters including IMSI, Ki, ICCID, OP/OPc, SPN, MCC, and MNC multiple times, which is essential for iterative development and testing workflows.

Q3: Do your SIM cards support 5G Standalone (SA) networks?

Yes. HKCARD supplies Programmable 5G NR 3GPP R16 SA SIM cards including 5G SA 128K SIM and full 5G USIM variants that are validated for 5G Standalone network deployments.

Q4: What tools are compatible with HKCARD programmable SIM cards?

Our SIM cards are compatible with pySim, PC/SC smart card readers, SIM personalize tools, Java SIM environments, and other standard SIM card creator platforms used by telecom engineers globally.

Q5: What is a SUCI SIM card and do you offer it?

A SUCI SIM card (Subscriber Concealed Identifier) is a 5G-specific SIM that protects user identity by concealing the SUPI (Subscriber Permanent Identifier) during network registration. HKCARD offers SUCI-enabled 5G SIM cards compliant with 3GPP Release 16 standards.

Q6: What memory sizes do HKCARD SIM cards come in?

We offer 128K SIM, 256K SIM, and 512K SIM memory configurations. For 4G LTE and 5G applications, 128K USIM is the most commonly deployed option.

Q7: Can HKCARD supply sysmocom-compatible SIM cards?

Yes. We supply sysmoSIM-SJA2, sysmoUSIM-SJS1, and sysmoSIM-SJA5 compatible programmable SIM cards widely used in open-source telecom stacks including Osmocom, Open5GS, and srsRAN.

Q8: Do you provide NFC SIM cards for mobile payment applications?

Yes. HKCARD offers NFC SIM cards, SIM wallet NFC, and Java SIM card solutions suitable for mobile payments, digital wallets, transit ticketing, and access control applications.

Q9: Can I order white label MVNO SIM cards in bulk?

Absolutely. HKCARD is a SIM card wholesale supplier providing white label MVNO SIM cards, blank SIM cards, and custom-branded SIM solutions for MVNO operators and resellers at competitive bulk pricing.

Q10: How do I get started with HKCARD for a custom SIM card project?

Simply contact our sales team through our website with your project requirements including desired parameters (IMSI range, Ki, OP/OPc, form factor, memory size, quantity), and our technical team will provide a tailored quotation and product recommendation within 24 hours.

HKCARD Electronics Programmable 5G SA 128K USIM Card – Writable IMSI Ki ICCID OP OPc – 2FF 3FF 4FF Nano SIM Manufacturer

HKCARD Writable SIM Card Range – 4G LTE USIM Blank SIM White Label MVNO NFC SIM IoT SIM 128K 256K 512K Wholesale Supplier

Contact HKCARD Electronics – Get Your Custom SIM Card Quote Today

Are you looking for a reliable supplier of:

• ✅ Programmable SIM cards for 4G LTE or 5G SA networks
• ✅ Writable IMSI, Ki, ICCID, OP/OPc SIM cards
• ✅ Re-programmable USIM LTE for R&D and testing
• ✅ White label MVNO SIM cards for your network
• ✅ Bulk blank SIM cards for wholesale
• ✅ IoT SIM cards for connected device projects
• ✅ 5G SA NR SIM cards for private networks
• ✅ NFC SIM cards for mobile payment solutions
• ✅ sysmocom-compatible programmable SIM cards

HKCARD Electronics Co., Limited is your answer.

With 15+ years of manufacturing experience, a global customer base, and a full range of programmable SIM card solutions, we are ready to support your project from prototype to mass production.

📧 Contact our team today for product specifications, technical support, samples, and wholesale pricing.

1. Best Programmable SIM Card Manufacturer for 5G SA & 4G LTE – HKCARD Electronics
2. Writable IMSI Ki ICCID SIM Cards: Trusted Wholesale Supplier – HKCARD Electronics Co., Limited
3. 5G SA NR SIM Cards with SUCI Support – Buy From HKCARD, Your Reliable Manufacturer
4. White Label MVNO SIM Cards & Bulk Blank SIM Supplier – HKCARD Electronics
5. Re-Programmable USIM LTE & 5G NR SIM Cards for IoT, R&D & Telecom Testing – HKCARD

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