HKCARD Programmable 5G & 4G LTE SIM Cards – Writable IMSI/Ki/OPc
HKCARD ELECTRONICS CO., LIMITED: 10+ years SIM card manufacturer. Re‑programmable USIM/LTE and 5G SA SIM cards with writable IMSI, Ki, ICCID, OP/OPc. Bulk, IoT, MVNO and test SIM solutions.
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HKCARD programmable white SIM cards with 2FF 3FF 4FF nano-USIM form factors for 5G SA and 4G LTE testing
Engineer using PC/SC pySim tools to program writable IMSI, Ki and ICCID on an HKCARD blank SIM card
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HKCARD ELECTRONICS – Professional Manufacturer of Programmable and Writable SIM Cards for 5G, 4G LTE and IoT
HKCARD ELECTRONICS CO., LIMITED is a long‑established, professional supplier in the mobile phone SIM cards industry, with more than ten years of experience in design, manufacturing and personalization.
We focus on re‑programmable (not one‑time burn) SIM cards for network testing, IoT deployments, MVNO projects, R&D labs and private 4G/5G networks. Our portfolio covers USIM / LTE SIM cards (not GSM‑only), 4G LTE/WCDMA blank cards, and advanced programmable SIM card 5G products.
As a direct SIM card manufacturer and SIM card suppliers, HKCARD combines engineering‑grade quality with flexible customization and global export capability.
Complete Programmable SIM Card Portfolio
HKCARD’s cards are true programmable SIM cards, designed to be configured using standard PC/SC tools (e.g., pySim) and other professional sim programming and sim personalize tools.
Instead of fixed operator profiles, you get full control over key parameters, including:
Writable IMSI, Ki, ICCID and More
Our products support:
- Writable IMSI SIM Cards – change the IMSI to match your test network or private core.
- Support for scenarios often searched as “writable imsi sim cards free of operator lock” (our cards are carrier‑unlocked, not free of cost).
- Writable Ki SIM Cards – program the authentication K/KEY securely.
- Writable ICCID SIM Cards – define your own card serial numbering scheme.
- Writable OP or OPc SIM Cards – configure Milenage or other algorithms with custom OP/OPc values.
- Writable KEY SIM Cards – additional key fields for custom security needs.
- Writable SPN SIM Cards – control the Service Provider Name shown on the device.
- Writable MNC SIM Cards and Writable MCC SIM Cards – fully define network identity for lab, MVNO or private LTE/5G networks.
All these are implemented on re‑programmable (not one‑time burn) SIM cards, so you can erase and re‑write data repeatedly during development and testing.
USIM / LTE, 4G GSM and IoT/Evaluation SIM Cards
Our USIM / LTE SIM cards are designed for modern networks:
- Support 2G/3G/4G as usim 4G, usimLTE, and 4G GSM SIM card profiles.
- Ideal for 4G LTE/WCDMA blank cards used in lab testing and field trials.
- Compatible with multi network 4G VoLTE SIM card scenarios and 4G VoLTE tester setups.
For IoT and M2M:
- IoT/Evaluation SIM Cards with optimized memory (128K USIM / 128K SIM, 128kUSIM) for smart meters, tracking, parking systems and sensors.
- Used widely for parking SIM cards, industrial telemetry and smart city projects.
HKCARD’s Programmable SIM Cards for 5G Networks
HKCARD is ahead in 5G with dedicated products for standalone and non‑standalone deployments.
5G SA and 3GPP R16‑Ready SIM Cards
We supply:
- Programmable 5G NR 3GPP R16 SA 5G SIM Card
- HKCARD’s programmable SIM cards for 5G networks, tuned for 5G core testing and private networks
- 5G SA 128K SIM and higher capacity options for complex profiles
- 5G USIM products that support both LTE and 5G NR
5G features supported:
- SA SIM card / 5G SA SIM card profiles for standalone cores
- SUCI SIM card capabilities (Subscription Concealed Identifier) for 5G privacy and security – often searched as “suci sim card” or “suci sim คือ”
- Proper handling of 5G AKA, SUPI/SUCI and slicing‑ready configurations
We also provide blank eSIM options for partners working on remote provisioning.
Form Factors, Memory Sizes and Special Variants
HKCARD supplies flexible shapes and capacities for different devices and industries.
Form Factors
- Available form factors: 2FF / 3FF / 4FF SIM Cards
- Trio‑punch half SIMcard LTE trio design compatible with almost all devices
- Nano‑USIM for smartphones, tablets and compact IoT modules
Memory Sizes
- 128K SIM / 128K USIM (128kUSIM) – perfect for IoT and evaluation use
- 256K SIM – for richer file systems and simple Java applets
- 512K SIM – for multi‑application, multi‑profile use cases
White SIM, Dummy, CDMA and TD‑SCDMA
We also offer:
- White SIM card / white SIMs / white SIM cards – fully blank plastic, ideal for white label MVNO SIM cards and white label SIM cards
- Blank SIM cards / blank SIM / SIM blank – no preloaded operator data
- SIM dummy / fake SIM / dummy SIM card / dummy SIM card Airtel – for device fitting and retail demonstration (no network access)
- CDMA SIM card, RUIM card and UIM card – for CDMA and multi‑mode devices
- TD SIM – for TD‑SCDMA and specific regional networks
White Label, OEM and Wholesale SIM Card Solutions
As an experienced SIM card manufacturer and SIM cards wholesale supplier, HKCARD supports:
- Custom SIM card printing and profile design
- White label MVNO SIM cards for new operators and brands
- SIM card wholesale and bulk SIM supply for distributors
- Targeted solutions like blank SIM card Airtel profiles for the Indian market
- Reliable alternatives to offbrand SIM products with strict QC and testing
We provide end‑to‑end SIM card solutions, from chip selection and OS to SIM card creator and personalization workflows.
Compatibility with Sysmocom, pySim and Open‑Source Tools
Many customers search for or use:
- sysmocom SIM card / sysmocom SIM cards / sysmocom SIM
- sysmoISIM‑SJA2, sysmoUSIM‑SJS1, sysmoISIM‑SJA5, SJA2
HKCARD offers compatible programmable SIM cards that work smoothly 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
If you are currently relying on sysmocom products, HKCARD can provide form‑, function‑ and file‑system‑compatible alternatives with better availability and competitive pricing.
NFC, Java SIM and Wallet Applications
For the growing SIM cards near field communication market, HKCARD delivers:
- NFC SIM / SIM card NFC / SIM NFC products
- Secure element‑based SIM wallet NFC cards for payment and ticketing
- Java platform‑based Java SIM card / SIM Java for custom applets, authentication and enterprise security
These products are ideal for banks, transport systems, loyalty programs and OEMs needing secure on‑card logic.
FAQ – HKCARD Programmable & Writable SIM Cards
Q1: Are HKCARD programmable SIM cards really re‑programmable, not one‑time burn?
Yes. All HKCARD products described here are re‑programmable (not one‑time burn) SIM cards. You can rewrite IMSI, Ki, OP/OPc and other fields multiple times using standard PC/SC readers and tools like pySim, within normal EEPROM endurance limits.
Q2: Do you provide writable IMSI SIM cards that are not locked to any operator?
Yes. Our writable IMSI SIM cards are factory‑unlocked. Many users search for “writable imsi sim cards free”; while the cards are not free of charge, they are free from operator lock and ready for your own IMSI, Ki and MCC/MNC configuration.
Q3: Which tools can I use to program HKCARD SIMs?
HKCARD programmable SIM cards work with:
- PC/SC smart card readers
- pySim
- Commercial sim personalize tools and sim programming software
We provide basic guidance for using these tools with our cards.
Q4: Do you offer 5G SA SIM cards with SUCI support?
Yes. Our Programmable 5G NR 3GPP R16 SA 5G SIM Card lineup includes 5G SA 128K SIM and other capacities, with full SUCI SIM card support, making them suitable for 5G SA core and privacy testing.
Q5: Can I order white label MVNO SIM cards with my own logo?
Yes. HKCARD produces white SIM cards and white label MVNO SIM cards with your brand, logo and artwork. We can pre‑personalize IMSI, Ki, ICCID, SPN, MCC, MNC based on your MVNO requirements.
Q6: Do you supply alternatives to sysmoISIM‑SJA2 and sysmoUSIM‑SJS1?
Yes. HKCARD manufactures compatible products for use where sysmoISIM‑SJA2, sysmoISIM‑SJA5 or sysmoUSIM‑SJS1 are typically deployed. Our cards work with similar tools and open‑source stacks, while offering more flexible lead times and pricing.
Q7: What memory size should I choose: 128K, 256K or 512K?
- 128K SIM / 128K USIM – ideal for IoT/evaluation, simple profiles
- 256K SIM – good for more services or basic Java applets
- 512K SIM – recommended for complex multi‑application or multi‑profile deployments
Our team can recommend the best option based on your project.
Q8: Do you also support CDMA, RUIM and UIM cards?
Yes. In addition to GSM/UMTS/LTE/5G products, HKCARD offers CDMA SIM card, RUIM card and UIM card options for regions and devices where CDMA or multi‑mode operation is still required.
Q9: What is the minimum order quantity (MOQ) for bulk SIM orders?
For bulk SIM and SIM card wholesale orders, MOQ typically starts from a few hundred pieces for standard products, and from 1,000 pieces for customized or white label SIM cards. We also offer small IoT/Evaluation SIM Cards kits for engineering testing.
Q10: How can I start working with HKCARD ELECTRONICS?
You can contact HKCARD directly with your technical requirements (network type, memory size, form factor, personalization fields). We will propose suitable SIM card solutions, provide datasheets and quotation, and arrange samples or mass production based on your needs.
Work with HKCARD – A Reliable Partner in the Mobile Phone SIM Cards Industry
With more than a decade of experience as a professional SIM card manufacturer, HKCARD ELECTRONICS CO., LIMITED offers:
- Stable product quality and full testing
- Flexible customization (profiles, printing, packaging)
- Competitive pricing for sim card wholesale and distributor programs
- Fast lead times and worldwide shipping
Whether you need programmable SIM cards for lab testing, 5G USIM for private networks, white SIM cards for MVNO branding, or NFC SIM for wallet applications, HKCARD is ready to support you.
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
