Programmable SIM Cards | Writable IMSI Ki OPc | HKCARD ElectronicsHKCARD ELECTRONICS: Leading manufacturer of programmable 5G/4G LTE SIM cards. Writable IMSI, Ki, ICCID, OPc. Bulk orders, IoT solutions & MVNO white label cards.
HKCARD programmable SIM cards with writable IMSI Ki and OPc in 2FF 3FF 4FF nano form factors for 5G SA and 4G LTE networksBlank white SIM cards being programmed with pySim PC/SC tools for IoT evaluation and MVNO deployment by HKCARD Electronics- Complete Guide to Programmable SIM Cards: Writable IMSI, Ki & OPc Solutions by HKCARD
- HKCARD Electronics: Your Trusted Manufacturer for 5G SA & 4G LTE Blank SIM Cards
- Re-Programmable SIM Cards for IoT, MVNO & Network Testing | HKCARD Solutions
- Buy Writable SIM Cards in Bulk: Custom 5G NR R16 & LTE USIM from HKCARD
- White Label SIM Card Supplier: Programmable USIM for Private Networks & Testing
#ProgrammableSIM #WritableSIMCard #5GSIM #4GLTE #IoTSIM #HKCARDElectronics #MVNOSolutions #TelecomTesting #BlankSIMCards #USIMCardsHKCARD ELECTRONICS: Premier Manufacturer of Programmable & Writable SIM Cards for 5G, 4G LTE & IoT Networks
In the rapidly evolving telecommunications landscape, the demand for flexible, customizable SIM card solutions has never been higher. HKCARD ELECTRONICS CO., LIMITED stands as a trusted leader in the mobile phone SIM cards industry, delivering cutting-edge programmable SIM cards and writable USIM solutions to clients across more than 80 countries worldwide.
With over 15 years of manufacturing expertise, we specialize in providing re-programmable (not one-time burn) SIM cards that empower telecom engineers, IoT developers, MVNOs, and research institutions with complete control over their authentication parameters.
What Makes HKCARD’s Programmable SIM Cards Different?
Unlike conventional carrier-locked SIM cards, HKCARD’s products offer full read/write access to critical subscriber identity parameters. Our cards are designed for professionals who require maximum flexibility in network testing, IoT deployment, and private network configurations.
Complete Parameter Customization
Every HKCARD programmable SIM card supports writing and modification of essential network authentication fields:
| Writable Parameter | Description | Application |
|---|---|---|
| Writable IMSI SIM Cards | International Mobile Subscriber Identity | Subscriber identification for test networks |
| Writable Ki SIM Cards | Authentication Key (128-bit) | Secure network authentication |
| Writable ICCID SIM Cards | Integrated Circuit Card Identifier | Unique card identification |
| Writable OP or OPc SIM Cards | Operator Variant Algorithm Configuration | Milenage algorithm configuration |
| Writable KEY SIM Cards | Additional security keys | Enhanced encryption support |
| Writable SPN SIM Cards | Service Provider Name | Custom carrier branding |
| Writable MNC SIM Cards | Mobile Network Code | Network operator identification |
| Writable MCC SIM Cards | Mobile Country Code | Country-specific network codes |
Pro Tip: Looking for writable IMSI SIM cards free of carrier restrictions? HKCARD provides completely unlocked cards ready for your custom configuration.
Supported Technologies: From 4G LTE to 5G NR Standalone
HKCARD ELECTRONICS serves clients across all major network generations with our comprehensive product portfolio:
USIM / LTE SIM Cards (Not GSM-Only)
Our 4G LTE/WCDMA blank cards go far beyond legacy GSM technology. Every HKCARD product is a true USIM 4G card supporting:
- LTE Cat-M1 and NB-IoT for low-power applications
- VoLTE (Voice over LTE) certification testing
- 4G GSM SIM card backward compatibility
- Multi network 4G VoLTE SIM card configurations
HKCARD’s Programmable SIM Cards for 5G Networks
As 5G deployment accelerates globally, HKCARD leads the industry with our Programmable 5G NR 3GPP R16 SA 5G SIM Card solutions:
- 5G SA SIM Card — Full Standalone architecture support
- 5G USIM with enhanced security features
- 5G SA 128K SIM — Optimized memory configuration
- SUCI SIM Card — Subscription Concealed Identifier for 5G privacy
- Custom SIM cards for 4G LTE & 5G NR Networks
Our Programmable SIM card 5G products support the latest 3GPP Release 16 specifications, including:
- 5G-AKA authentication
- SUPI/SUCI encryption
- Network slicing compatibility
- SA (Standalone) and NSA (Non-Standalone) modes
Available Memory Sizes & Form Factors
H3: Memory Configurations
HKCARD offers multiple memory options to accommodate different application requirements:
| Memory Size | Best For | File System |
|---|---|---|
| 128K SIM / 128K USIM | Standard testing, IoT | Basic USIM structure |
| 256K SIM | Extended applications | Java Card applets |
| 512K SIM | Complex deployments | Multi-application support |
Form Factors: 2FF / 3FF / 4FF SIM Cards
All HKCARD products ship in the convenient half SIM card LTE trio format, allowing you to punch out:
- 2FF (Mini-SIM) — 25mm × 15mm, legacy devices
- 3FF (Micro-SIM) — 15mm × 12mm, tablets and older smartphones
- 4FF (Nano-SIM / Nano-USIM) — 12.3mm × 8.8mm, modern smartphones and IoT modules
Our SIM card half LTE trio design ensures maximum compatibility across all device types.
Industry Applications & Use Cases
IoT/Evaluation SIM Cards
The Internet of Things demands reliable, cost-effective connectivity solutions. HKCARD’s IoT/Evaluation SIM Cards are deployed across:
- Smart metering and utility monitoring
- Fleet management and vehicle tracking
- Parking SIM cards for smart city infrastructure
- Industrial sensors and M2M communication
- Agricultural monitoring systems
White Label MVNO SIM Cards
Are you launching a Mobile Virtual Network Operator? HKCARD provides comprehensive white label SIM cards and white label MVNO SIM cards solutions:
- Blank SIM cards with custom printing options
- White SIM card and white SIMs for branding flexibility
- Bulk SIM quantities from 1,000 to 10,000,000+ units
- Full SIM card wholesale pricing for volume orders
Network Testing & Development
Telecom engineers and researchers trust HKCARD for:
- USIM test solution packages
- 4G VoLTE tester configurations
- Dummy SIM card for device testing
- SIM dummy and fake SIM for production line validation
- Empty SIM card for laboratory experiments
NFC & Secure Element Applications
Our specialized products address the growing SIM cards near field communication market:
- NFC SIM with integrated secure element
- SIM card NFC for contactless payments
- SIM NFC mobile wallet applications
- SIM wallet NFC solutions
Programming Tools & Compatibility
Programmable SIM Cards Using PC/SC Tools (e.g., pySim)
HKCARD cards are designed for seamless integration with industry-standard SIM personalize tools:
Supported Software:
- pySim — Open-source Python-based SIM programming
- SIM card creator applications
- SIM programming utilities (proprietary and open-source)
- Commercial sim personalize tools
Hardware Compatibility:
- Standard PC/SC smart card readers
- USB CCID-compliant devices
- Omnikey, ACS, and Gemalto readers
Alternative to Sysmocom Products
HKCARD programmable cards serve as excellent alternatives to:
- Sysmocom SIM card / Sysmocom SIM cards
- SysmoISIM-SJA2 / SJA2
- SysmoUSIM-SJS1
- SysmoISIM-SJA5
- Sysmocom SIM
Our products offer comparable functionality with competitive pricing and responsive technical support.
Specialized Product Categories
CDMA & Legacy Network Support
For networks still operating on CDMA technology, we provide:
- CDMA SIM card (CSIM)
- RUIM card — Removable User Identity Module
- UIM card — User Identity Module
- TD SIM for TD-SCDMA networks
Java Card & Applet Development
Developers building custom SIM-based applications rely on our:
- Java SIM card with JCOP-compatible runtime
- SIM Java development cards
- Global Platform compliant products
- Multi-application SIM environments
Blank & Evaluation Products
For testing and development purposes:
- Blank SIM / SIM blank cards
- Blank SIM card Airtel compatible (Indian market)
- Dummy SIM card Airtel for retail display
- Blank eSIM programmable cards
- Offbrand SIM alternatives
Why Choose HKCARD ELECTRONICS as Your SIM Card Supplier?
Manufacturing Excellence
As a leading SIM card manufacturer with 15+ years of industry experience, HKCARD offers:
✅ ISO 9001:2015 certified production facilities
✅ 100% testing of every card before shipment
✅ Custom SIM card development capabilities
✅ SIM card solutions tailored to your requirements
Competitive Wholesale Pricing
HKCARD serves as your reliable SIM card suppliers and SIM cards wholesale supplier with:
- Volume discounts for bulk SIM orders
- SIM card wholesale pricing transparency
- Flexible MOQ starting from 100 pieces
- Dedicated account management for large projects
Global Shipping & Support
- Worldwide DHL/FedEx express delivery
- Technical documentation in English and Chinese
- Email and WhatsApp support
- Sample orders available for evaluation
Frequently Asked Questions (FAQ)
Q1: What is a writable IMSI SIM card and how does it work?
A: A writable IMSI SIM card allows you to program the International Mobile Subscriber Identity directly onto the card using PC/SC tools. Unlike carrier-issued SIMs, these cards give you complete control over subscriber identity parameters for testing, development, or private network deployment.
Q2: Are HKCARD’s SIM cards re-programmable or one-time burn only?
A: All HKCARD products are re-programmable (not one-time burn) SIM cards. You can write, erase, and rewrite authentication parameters like IMSI, Ki, and OPc multiple times throughout the card’s lifecycle.
Q3: Do your programmable SIM cards support 5G SA (Standalone) networks?
A: Yes, our Programmable 5G NR 3GPP R16 SA 5G SIM Card products fully support 5G Standalone architecture, including 5G-AKA authentication, SUCI encryption, and network slicing features.
Q4: What form factors are available for your SIM cards?
A: We supply 2FF / 3FF / 4FF SIM cards in the convenient trio punch-out format. This includes Mini-SIM (2FF), Micro-SIM (3FF), and Nano-USIM (4FF) sizes to fit any device.
Q5: Can I use pySim to program HKCARD SIM cards?
A: Absolutely. Our programmable SIM cards using PC/SC tools (e.g., pySim) are fully compatible with the open-source pySim software, as well as other commercial SIM programming applications.
Q6: Do you offer white label SIM cards for MVNOs?
A: Yes, HKCARD is a leading supplier of white label MVNO SIM cards. We provide blank SIM cards, white SIM cards, and custom-printed solutions for mobile virtual network operators worldwide.
Q7: What memory sizes are available for your USIM cards?
A: We offer 128K SIM, 256K SIM, and 512K SIM options. Our 128K USIM and 5G SA 128K SIM products are particularly popular for IoT and evaluation applications.
Q8: Are your products compatible with sysmocom SIM card alternatives?
A: Yes, HKCARD products serve as direct alternatives to sysmoISIM-SJA2, sysmoUSIM-SJS1, sysmoISIM-SJA5, and other sysmocom SIM cards. Our cards offer equivalent functionality with competitive pricing.
Q9: Do you support NFC SIM card applications?
A: Yes, we manufacture NFC SIM products for the SIM cards near field communication market, including SIM card NFC and SIM wallet NFC solutions for contactless payment applications.
Q10: What is the minimum order quantity and how can I place an order?
A: Our MOQ starts at 100 pieces for sample/evaluation orders. For bulk SIM and SIM card wholesale inquiries, please contact our sales team directly for volume pricing and lead times.
Technical Specifications Summary
| Feature | Specification |
|---|---|
| Card Type | USIM / LTE SIM Cards (not GSM-only) |
| Network Support | 2G/3G/4G LTE/5G NR SA/NSA |
| Memory Options | 128K / 256K / 512K |
| Form Factors | 2FF / 3FF / 4FF (Trio) |
| Writable Fields | IMSI, Ki, ICCID, OP/OPc, SPN, MCC, MNC |
| Programming | PC/SC, pySim, commercial tools |
| Rewrite Capability | Re-programmable (not one-time burn) |
| Certifications | ISO 9001, ETSI compliant |
Contact HKCARD ELECTRONICS Today
Ready to source high-quality programmable SIM cards for your next project? Whether you need IoT/Evaluation SIM cards, 5G SA SIM card solutions, or white label MVNO SIM cards, HKCARD ELECTRONICS is your trusted partner.
Get Started:
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
Request a free sample today and experience why leading telecoms, IoT developers, and MVNOs worldwide choose HKCARD as their SIM card manufacturer of choice.
