What Is a Programmable Blank SIM Card?
A programmable blank SIM card gives engineers and developers full control over SIM parameters. Unlike regular carrier SIMs, these cards come with a rewritable EEPROM chip, letting you write and rewrite IMSI, ICCID, Ki, and OPC values using standard SIM programming tools.
At HKCARD ELECTRONICS CO.,LIMITED, we manufacture and supply these writable SIM cards for telecom testing labs, mobile network developers, and IoT companies across Lebanon, Chile, Brazil, and other South American markets. Whether you’re building a GSM test rig or prototyping an M2M device, our blank SIM cards adapt to your workflow.
Why Choose HKCARD’s Programmable SIM Cards?
Full Write Access
Every field that matters — IMSI, Ki, ICCID, OPC — can be configured through SIM card readers and compatible software. No locked-down firmware, no restrictions on how you use the card.
Works Across 2G, 3G, and 4G Networks
These cards aren’t limited to one generation of mobile tech. Depending on carrier support and your programming setup, HKCARD’s SIMs function across GSM, UMTS, and LTE networks.
Built to Last Through Heavy Testing
With over 100,000 write cycles and more than 10 years of data retention, these cards handle repeated reprogramming without degrading — perfect for labs running continuous test cycles or cloning scenarios.
One Card, Three Sizes
Each SIM ships in a 3-in-1 format (standard, micro, nano) with breakable cuts, so you’re not stuck ordering different sizes for different devices.
Made for Developers
From SIM toolkit (STK) development to IoT prototyping, HKCARD’s blank SIM cards give R&D teams a flexible foundation to build and test mobile communication projects.
Technical Specifications
| Feature | Details |
|---|---|
| Pre-installed COS | Yes |
| Supported Networks | GSM (2G), UMTS (3G), LTE (4G) |
| SIM Format | 3-in-1 (Standard / Micro / Nano) |
| Write Cycles | 100,000+ |
| Data Retention | 10+ years |
| Internal Data RAM | 256 bytes |
| External Data XRAM | 2048 bytes |
| Flash Memory | 80K bytes (COS + user data area) |
| CPU Core | High-performance 8-bit HC8051 |
Common Use Cases
- SIM development and prototyping — build custom SIM applications from the ground up
- Network testing — validate GSM/UMTS/LTE compatibility before deployment
- M2M and IoT communication — equip connected devices with configurable SIM profiles
- Telecom R&D labs — run repeated configuration cycles without replacing hardware
- STK (SIM Toolkit) development — test menu-based SIM applications in a controlled environment
Shipping to Lebanon, Chile, Brazil & South America
HKCARD ELECTRONICS CO.,LIMITED ships programmable SIM cards quickly and securely to telecom businesses and developers throughout Lebanon, Chile, Brazil, and the wider South American region. Our team handles bulk orders, custom specifications, and fast international delivery — so your testing timeline stays on track.
Get in Touch with HKCARD
Looking for programmable blank SIM cards for your next project? Reach out directly:
📧 Email: byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp / WeChat: +86 158 1737 2512
HKCARD ELECTRONICS CO.,LIMITED — your trusted manufacturer for writable SIM cards, telecom testing solutions, and custom mobile development hardware.
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