I’m the founder and CEO of HKCARD ELECTRONICS CO., LIMITED. For more than 15 years I have built a factory‑direct supply chain that delivers 4G Nano+NFC Factory Sim Card 1.8v, 4G Nano+NFC Factory Sim Card 3.6v, 4G Nano+NFC Factory Sim Card 1.62v‑5.5v, and the flagship 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS to telecom operators, banks, governments, and IoT innovators worldwide.
Every product that leaves my plant is inspected, programmed, and shipped under my direct supervision – that’s why my customers call me “the most reliable NFC‑SIM supplier”.
Table of Contents
ToggleThe Complete Product Line We Offer
| Product | Voltage | Key Features | Typical Use |
|---|---|---|---|
| 4G Nano+NFC Factory Sim Card 1.8v | 1.8 V | Ultra‑low power, secure element, OTA | IoT sensors, wearables, legacy devices |
| 4G Nano+NFC Factory Sim Card 3.6v | 3.6 V | Standard smartphone compatibility, high‑speed LTE | Mobile phones, tablets, POS terminals |
| 4G Nano+NFC Factory Sim Card 1.62v‑5.5v | 1.62‑5.5 V | Universal voltage range, robust design | Global roll‑outs, multi‑vendor environments |
| 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS | Multi‑voltage | 256 KB EEPROM, EAL6+ security, OTA provisioning, sim swp ready | Enterprise banking, secure transit, digital ID |
| Factory Sim Card V3.0 C‑CLASS (non‑NFC version) | Multi‑voltage | Same security core, no NFC coil | Pure data‑only applications |
| NFC SIM Card / NFC SIM / NFC‑SIM / sim nfc / nfc sim | Multi‑voltage | Contactless payment, access control, JavaCard 3.0 | Mobile wallets, transport tickets |
| nfc sim cards | Multi‑voltage | Custom memory, branding options | Private‑label telecom projects |
| nfc white blank card | Multi‑voltage | Plain white substrate, ready for on‑demand printing | Rapid prototyping, promotional campaigns |
| nfc sim karte / kartu nfc / nfcsim / nfc usim / nfc simkaart | Multi‑voltage | Multilingual file‑system, regional network profiles | International operators, cross‑border services |
| test sim card / nfc sim kart / tarjeta SIM NFC | Multi‑voltage | Developer kits, OTA tools, full sim swp support | Lab testing, certification, R&D |
All of the above are ISO 9001, CE, RoHS, and REACH certified, and I personally guarantee that each batch passes our in‑house security and performance labs before it ships.
Why our NFC‑SIM Cards Stand Out
- Voltage Flexibility – I produce 1.8 V, 3.6 V, and the universal 1.62 V‑5.5 V versions so you never have to redesign hardware when you expand to new markets.
- Security First – The Factory Sim Card V3.0 C‑CLASS and the 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS are EAL6+ certified, support OTA key updates, and include a tamper‑resistant secure element.
- Full sim swp Integration – My cards expose the Single Wire Protocol, enabling truly contactless mobile payments without extra chips.
- Brand‑Ready Customization – From nfc white blank card printing to nfc sim karte logo embossing, I can deliver a fully branded package in as little as 48 hours.
- Global Compatibility – nfc sim kaart, kartu nfc, nfcsim, and nfc usim are pre‑loaded with regional network parameters, so you can launch in Europe, Asia, Africa, or the Americas with a single SKU.
FAQ
Q: What is the difference between the 4G Nano+NFC Factory Sim Card 1.8 V and 3.6 V models?
A: The 1.8 V version is optimized for low‑power IoT and legacy devices, while the 3.6 V model matches the power requirements of most modern smartphones. Both support the same secure NFC element and OTA features.
Q: How does the 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS improve security?
A: It incorporates an EAL6+ certified secure element, 256 KB of EEPROM, and OTA key rotation, making it ideal for banking, transit, and digital‑ID applications.
Q: What is sim swp and why do I need it?
A: sim swp (Single Wire Protocol) creates a direct, encrypted link between the SIM’s secure element and the phone’s NFC antenna, enabling contactless payments, ticketing, and access control without extra hardware.
Q: Can I get a custom‑printed nfc white blank card for a marketing campaign?
A: Yes. I offer full‑color CMYK printing, QR‑code engraving, and serial number encoding on the nfc white blank card with a 48‑hour turnaround for orders over 1,000 units.
Q: Are your test sim card kits ready for developers?
A: Absolutely. Each test sim card kit includes OTA provisioning tools, a full sim swp stack, and documentation for Android, iOS, and embedded Linux platforms.
Technical Snapshot
| Item | Voltage | Memory | Security Level | NFC | OTA |
|---|---|---|---|---|---|
| 4G Nano+NFC 1.8 V | 1.8 V | 32 KB | EAL4+ | Yes | Yes |
| 4G Nano+NFC 3.6 V | 3.6 V | 64 KB | EAL5+ | Yes | Yes |
| 4G Nano+NFC 1.62‑5.5 V | 1.62‑5.5 V | 128 KB | EAL5+ | Yes | Yes |
| V3.0 C‑CLASS (NFC) | Multi | 256 KB | EAL6+ | Yes (Secure Element) | Yes |
| V3.0 C‑CLASS (no NFC) | Multi | 256 KB | EAL6+ | No | Yes |
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#SmartCardManufacturing- “How to Choose the Right 4G Nano+NFC Factory Sim Card Voltage (1.8 V, 3.6 V, or 1.62‑5.5 V) for Your Project”
- “Why the 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS Is the Most Secure NFC‑SIM on the Market”
- “Factory‑Direct NFC‑SIM Card Solutions: Custom nfc white blank card, sim swp, and Global Compatibility”
- “Test Sim Card & NFC‑SIM Kart Kits: Accelerate Development with OTA and SWP Support”
- “NFC‑SIM, NFC‑SIMKarte, Kartu NFC, and Tarjeta SIM NFC – All the International Variants You Need in One Supplier”
Q: Which voltage should I select for low‑power IoT devices?
A: Choose the 4G Nano+NFC Factory Sim Card 1.8 V – it consumes the least power while still offering full NFC functionality.Q: How does the V3.0 C‑CLASS improve OTA updates?
A: The card’s secure element supports encrypted OTA key rotation, allowing you to push new credentials without physical access.Q: Can my brand’s logo be printed on a blank NFC card?
A: Yes, the nfc white blank card can be fully customized with logos, QR codes, and serial numbers.Q: Are NFC‑SIM cards compatible with Apple Pay and Google Pay?
A: Absolutely. Our NFC‑SIM, NFC‑SIM Karte, and nfcsim are sim swp‑enabled and certified for major mobile wallets.Q: Do you provide test SIMs for network certification?
A: We ship test sim card kits worldwide within 48 hours, complete with OTA tools and SWP support.
Let’s Get Started
If you need a reliable source for 4G Nano+NFC Factory Sim Card 1.8 V, 4G Nano+NFC Factory Sim Card V3.0 C‑CLASS, nfc sim cards, nfc white blank card, or any of the other products listed above, just drop me a line. I personally review every quotation, guarantee factory‑direct pricing, and ensure rapid delivery to any continent.
Contact HKCARD Today
Partner with HKCARD ELECTRONICS for OEM SIM cards
📞 Contact us now:byronhan@cardmfg.com
byronhan1@gmail.com
byron@cardmfg.com
My skype/Teams is byron1681
Whatsapp /Phone Number:+8615817372512
🌐 Visit our website: https://www.cardmfg.com/
HKCARD ELECTRONICS CO., LIMITED – I don’t just manufacture SIM cards; I deliver secure, scalable connectivity that powers the future.


