HKCARD ELECTRONICS CO., LIMITED is a professional supplier of blank SIM, USIM and ISIM cards for telecom testing, device development, and lab validation. With more than 10 years in the SIM card industry, we help engineers, QA teams, and manufacturers get stable, standards-aligned cards that work across GSM, WCDMA, 4G LTE and VoLTE networks.
If you need writable test cards for repeated programming, multi-form-factor cards for different devices, or bulk supply for labs and production verification, HKCARD can support you with consistent quality and practical lead times.
What We Supply
Blank & Programmable Cards
- Blank SIM cards (2G/3G test use)
- Blank USIM cards (3G/4G LTE, VoLTE scenarios)
- Blank ISIM/USIM cards (IMS/VoLTE and related testing)
Form Factors
- 2FF (Mini) / 3FF (Micro) / 4FF (Nano)
- 3-in-1 combo options (easy handling for labs)
Tools & Accessories
- SIM card readers/writers
- Programming and test software/tools
- Adapters (Mini/Micro/Nano)
Why Engineers Choose HKCARD
1) Real-world Testing Focus
Blank and writable cards are mainly used in environments where you need to program, erase, and rewrite repeatedly—device bring-up, field troubleshooting, lab validation, and training.
2) Stable Compatibility
Our cards are designed for broad use with common devices and standard workflows, supporting:
- 4G LTE / VoLTE
- WCDMA / GSM
3) Quality Control You Can Rely On
Each batch follows a consistent QC process aimed at:
- Electrical stability and reliable contact performance
- File access consistency for read/write operations
- Batch-to-batch uniformity (important for labs and bulk orders)
(RoHS/WEEE compliance can be provided per product/batch where applicable.)
4) Custom Programming (When You Need It)
For projects that require specific parameters, we support programming services such as:
- ICCID personalization
- IMSI programming
- KI (authentication key) injection
- OPC / OP configuration
- Application/file programming for specific test requirements
Common Applications
Phone SIM/USIM Read-Write Testing
Teams use writable cards to:
- Verify network registration flows
- Simulate different subscriber profiles
- Validate authentication behavior
- Compare device behavior across network modes
Prototype Development & Field Engineering
For prototypes and troubleshooting, writable blank cards help you:
- Change key parameters quickly
- Reproduce network issues in the field
- Run repeatable tests without consuming one-time cards
Telecom Lab / Operator Verification
Blank USIM/ISIM cards are widely used for:
- VoLTE/IMS feature checks
- Network optimization tests
- Subscriber authentication testing setups
Popular Supply Options (Typical Requests)
To keep ordering simple, these are common configurations customers ask for:
- 5 pcs / 10 pcs small packs for R&D and pilot testing
- 100 pcs bulk packs for labs, training, or high-consumption test teams
- Multi-size (2FF/3FF/4FF) 3-in-1 cards for teams working with many devices
- 128K / 256K memory options depending on test scope and file requirements
If you tell us your device/module model and what you’re trying to test (LTE attach, VoLTE, IMS, etc.), we’ll recommend a suitable card type and memory size.
Reader Compatibility (Example)
Many customers use HID Omnikey 3121 and similar standard contact smart card readers. Our blank USIM/ISIM cards are commonly used in these setups for lab programming and validation workflows.
If you’re using a different reader/writer, share the model—our team can confirm compatibility before shipping.
Contact HKCARD ELECTRONICS CO., LIMITED
- Email: byronhan@cardmfg.com
- Website: https://www.cardmfg.com/
- WhatsApp/WeChat: +8615817372512
- Location: Hong Kong, China
FAQ
Q1: What’s the difference between SIM, USIM, and ISIM?
- SIM: typically used for 2G/3G
- USIM: used for 3G/4G LTE (and often needed for VoLTE scenarios)
- ISIM: used for IMS-related services (commonly tied to VoLTE/IMS testing)
Q2: Can HKCARD program ICCID/IMSI/KI/OPC on the cards?
Yes. We can provide custom programming for ICCID, IMSI, KI, OPC/OP, and related parameters based on your project needs.
Q3: Do you supply in Nano/Micro/Mini formats?
Yes—2FF/3FF/4FF are available, including 3-in-1 options.
Q4: Lead time for orders?
- Standard items are usually ready within 3–5 business days
- Custom-programmed orders typically take 7–10 business days, depending on requirements and quantity
Q5: Do you support bulk pricing?
Yes. Send your required card type, memory, form factor, and quantity for a quote.
