In the fast-evolving mobile phone SIM cards industry, finding a reliable partner for testing and personalization is critical. HKCARD ELECTRONICS CO., LIMITED stands out as a reliable supplier with over 10 years of experience, specializing in blank, programmable, and writable SIM cards for telecom operators, R&D labs, and IoT developers worldwide.
Whether you need Phone SIM USIM Read-write Cards for mobile testing or Blank 4G VoLTE ISIM cards for network deployment, we provide factory-direct solutions compatible with WCDMA, GSM, FDD, and 4G LTE networks.
Why Global Telecom Engineers Choose HKCARD
We are not just a trader; we are technical experts in smart card technology.
- 🏭 10+ Years of Expertise: Deep knowledge of SIM USIM 4G LTE chip architecture.
- 🛠️ Full Compatibility: Our cards work seamlessly with HID Omnikey 3121 and standard PC/SC readers.
- ✅ Certified Quality: RoHS & WEEE Certified, ensuring safety and environmental compliance.
- 📦 Flexible MOQ: From 5PCS factory supply samples to 100pcs/lot bulk orders.
Our Core Products – Writable & Programmable SIM Solutions
We cover the full spectrum of Testing Mobile Phone SIM Blank Cards. Our inventory includes various sizes (2FF, 3FF, 4FF) and technologies.
1. Blank 4G VoLTE ISIM & USIM Cards (The Gold Standard)
Our Latest Intelligent Writable Programmable Blank LTE USIM cards are designed for next-gen networks.
- Tech Specs: Supports VoLTE, IMS, FDD, WCDMA, GSM.
- Memory: 128K / 64K options.
- Data Writable: Full support for ICCID, IMSI, ADM, KI, OPC, OP, and Mileage programming.
- Perfect for: Telecom operators testing VoLTE handovers.
2. Nano, Micro & Mini SIM Form Factors
We supply the industry-standard sizes required for modern devices:
- 4FF (Nano SIM): For latest smartphones.
- 3FF (Micro SIM): For older Androids/IoT.
- 2FF (Mini SIM): For industrial modems.
- 3-in-1 Combo: 100pcs/lot Writable Programmable Blank SIM sets containing all three sizes (2FF/3FF/4FF) in one punch-out card.
3. The Complete Programming Kit
You can’t write to a card without the right tools. HKCARD offers the 4G LTE SIM Card Reader Writer Programmer bundle:
- Hardware: HID OMNIKEY 3121 Contact Smart Card Reader (USB 2.0, Two-tone Gray – R31210320-01).
- Software: 2G/3G/4G/5G 4.1.5 Ver SIM Card Software for easy key injection.
- Bundle: Includes 5PCS 128k 4G VoLTE Blank ISIM Cards to get you started.
Applications: Where Are Our Cards Used?
Our Writable Blank 4G VoLTE ISIM/USIM Cards are essential for:
| Application | Description |
|---|---|
| R&D Testing Labs | Validating new phone models against carrier networks. |
| MVNO/MVNE | White-labeling SIMs with custom IMSI/ICCID ranges. |
| IoT & M2M | Connecting trackers and sensors via 4G LTE. |
| SIM Personalization | Injecting keys (Ki/OPc) for secure network access. |
| Field Testing | Testing signal strength in remote areas. |
Technical Specifications at a Glance
| Feature | Specification |
|---|---|
| Product Name | Blank Programmable Writable 4G LTE USIM Card |
| Compatibility | 4G LTE / WCDMA / GSM / VoLTE / ISIM |
| Sizes | Nano (4FF), Micro (3FF), Mini (2FF), 3-in-1 |
| Chip Type | 128k Memory, ISO7816 Compliant |
| Writable Data | ICCID, IMSI, Ki, OPc, ADM, PIN/PUK |
| Reader Support | HID Omnikey 3121, ACR38, SCR3310 |
| Certification | RoHS, WEEE, CE |
| Packing | 5PCS, 10pcs/lot, 100pcs/lot |
Frequently Asked Questions
Q1: Can I program these blank cards with my own IMSI and ICCID?
A: Yes! Our Writable Programmable Blank SIM USIM Cards are fully programmable. You can write custom ICCID, IMSI, Ki, and OPC using the HID Omnikey 3121 reader and standard SIM software.
Q2: Are these cards compatible with 5G networks?
A: While physically 4G LTE, our Blank 4G VoLTE ISIM USIM Cards contain the USIM application required for 5G NSA (Non-Standalone) registration. They are the foundation for 5G connectivity.
Q3: Which card reader do you recommend?
A: We highly recommend the HID OMNIKEY 3121 Contact Smart Card Reader (R31210320-01). It is the industry standard for writing to ISO7816 SIM cards and works perfectly with our inventory.
Q4: Do you sell small quantities for testing?
A: Yes. We offer 5PCS Factory Supply packs and 10pcs/lot options for R&D engineers before bulk ordering.
Q5: What is the difference between USIM and ISIM?
A: USIM is for cellular access (4G/5G data), while ISIM is specifically for VoLTE (Voice over LTE) and IMS services. Our cards support both.
Q6: Is the HID Omnikey 3121 plug-and-play?
A: Yes. It is a USB 2.0 Desktop Card Reader that requires no external drivers on Windows, Linux, or macOS.
Q7: Can these cards be reused?
A: Yes. They are Program SIM Cards. You can erase and rewrite the IMSI/Ki keys multiple times (depending on chip endurance), making them perfect for Testing Mobile environments.
Q8: Do you provide the software?
A: Yes. Our bundles include 4.1.5 Ver SIM Card Software. We also support open-source tools like PySIM.
Q9: Are you a factory or a trader?
A: HKCARD ELECTRONICS CO., LIMITED is a manufacturer and supplier with over a decade of direct factory experience in the SIM card industry.
Q10: How fast is shipping?
A: We ship within 24-48 hours. Samples take 3-5 days; bulk orders take 7-10 days via DHL/FedEx.
🚀 Call to Action: Contact HKCARD Today
Don’t settle for low-quality clones. Choose the reliable supplier trusted by telecom engineers.
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
📍 Address: Shenzhen, China (Global Shipping)
👉 [Click Here to Request a Quote for 100pcs/lot Blank USIM Cards]
- Where to Buy Writable 4G LTE USIM Cards for MVNO?
- HKCARD: Trusted Source for Blank VoLTE ISIM & SIM Cards.
- Programmable Nano SIM Cards & HID Omnikey 3121 Reader Kit.
- Factory Direct Blank 4G SIM Cards: 5PCS to 100pcs Lots.
- How to Program Blank USIM Cards for 5G Testing?
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