Programmable SIM Card Supplier | Writable IMSI Ki ICCID for 4G LTE & 5G – HKCARD
HKCARD ELECTRONICS CO., LIMITED is a reliable programmable SIM card manufacturer with 10+ years of experience, offering writable IMSI, Ki, OPc, ICCID, SPN, MCC, and MNC for 4G LTE & 5G networks. Bulk USIM/SA SIM cards, blank and white label MVNO SIM cards available.
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HKCARD – Trusted Supplier of Programmable SIM Cards for 4G LTE & 5G SA Networks
With 15+ years of industry experience, HKCARD ELECTRONICS CO., LIMITED is a leading SIM card manufacturer and supplier specializing in programmable, writable, and re-programmable SIM cards. Our solutions are tailored for MVNOs, telecom operators, private LTE/5G network projects, IoT developers, and global testers.
We’re proud to support the full range of components for SIM personalization, with writable fields such as IMSI, Ki, ICCID, OP/OPc, SPN, MCC, MNC, compatible with software tools like pySim and other PC/SC programming tools.
Our Core Product Offerings
✅ Reprogrammable SIM Cards (Not One-Time Burn)
Unlike OTP SIMs, HKCARD programmable SIMs can be rewritten multiple times, making them ideal for:
- SIM personalization labs
- Private LTE / 5G Core testing
- Open5GS / srsRAN development
- IMS/VoLTE validation
- IoT prototyping
- MVNO white label SIM projects
✅ Writable Fields We Support
HKCARD SIM cards fully support custom fields for secure network authentication and testing:
- ✅ Writable IMSI SIM Cards
- ✅ Writable Ki SIM Cards
- ✅ Writable iccid sim cards
- ✅ Writable OP or OPc SIM Cards (MILENAGE support)
- ✅ Writable KEY SIM Cards
- ✅ Writable SPN SIM Cards
- ✅ Writable MCC/MNC SIM Cards
All data fields can be modified via PC/SC-compatible tools, e.g., pySim, Smart Card Readers, or our HKCARD SIM programming kit.
✔ New developers asking for “writable imsi sim cards free” are usually referring to free-open tools like pySIM, which all our SIMs support.
4G LTE / WCDMA USIM Cards & 5G NR SA SIM Cards
✅ USIM / LTE SIM Cards: Not GSM-only
- Compatible with 4G LTE/WCDMA networks
- Include support for VoLTE / IMS
- Often used for network test kits, 4G modules, and IoT devices
✅ Programmable 5G SIM Cards
Our advanced 5G product line includes:
- HKCARD’s Programmable SIM Cards for 5G SA Networks
- Programmable 5G NR 3GPP R16 SA 5G SIM Card
- Full support for SUCI, 5G AKA, and custom profiles
- SIMs with 128K / 256K / 512K file system options (R16-upgraded)
✔ Seen online as: “5g sa 128k sim”, “5g usim”, “blank esim”, “suci sim card”, “sim sa card”
SIM Applications We Support
💡 IoT & Evaluation Purposes
- IoT/Evaluation SIM Cards optimized for development boards and modules
- Dummy SIM, off-brand SIM, or uim cards available for low-risk demos
- TD SIM / CDMA SIM (upon request)
📦 MVNO & White Label Solutions
We provide white sim cards, blank sim cards, and white label MVNO SIM cards with:
- Custom artwork printing
- SPN/operator codes
- IMSI range management
This positions us among best sim card wholesale suppliers and bulk SIM card manufacturers globally.
Available SIM Formats & Customization
- ✅ Form Factors: 2FF, 3FF, 4FF (Trio and Nano-USIM)
- ✅ Memory Sizes: 128K, 256K, 512K
- ✅ Custom profiles: multi-network profiles, multi-IMSI, multi-authentication
- ✅ Compatible alternatives to Sysmocom SIM cards
- Including sysmoISIM-SJA2, sysmoISIM-SJA5, sysmousim-SJS1
Who Uses Our Products?
📡 Network/Device Testers — simulate and test authentication
🔐 Security Researchers — writable KEY/OPc/IMSI/Ki for encrypted analysis
🤖 IoT Developers — embedded authentication for modules, boards, launchpads
🌐 Private LTE/5G Builders — for Open5GS, Amarisoft, Huawei cores
📶 MVNO Operators — brandable white SIMs ready for resell with MNO data
10 Most Asked Questions (FAQ)
Q1: Can I rewrite data multiple times on your SIM cards?
A: Yes, our SIM cards are 100% reprogrammable, not limited to one-time burn.
Q2: Do you sell writable IMSI and Ki SIM cards?
A: Absolutely. Our cards allow full editing of IMSI, Ki, OPc, ICCID, SPN, and more.
Q3: Do your cards support pySim and PC/SC tools?
A: Yes. Cards are compatible with pySim, Open5GS tools, Smart Card Readers, and more.
Q4: Can I use these SIMs with 5G SA networks?
A: Yes. We supply 5G NR SA SIM cards based on 3GPP R16 specification requirements.
Q5: Do you offer bulk or white label packaging?
A: Yes. We offer custom production for thousands of SIMs with printed logos and authorized PLMNs.
Q6: Are your SIMs GSM-only?
A: No, we provide USIMs for WCDMA, LTE, and 5G. GSM-only offered upon special request.
Q7: What form factors are available?
A: All sizes: 2FF, 3FF, 4FF (trio, nano-usim), even blank eSIMs for elite projects.
Q8: Are your SIMs usable for IMS/VoLTE testing?
A: Absolutely, used by engineers worldwide for 4g volte tester projects.
Q9: Can I create SIM profiles myself?
A: Yes, you can use pySim + HKCARD SIM cards in creating and writing your own SIM profiles.
Q10: What’s your lead time for bulk orders?
A: 1–3 working days. Express shipping worldwide (DHL/FedEx/UPS).
Why Choose HKCARD?
- 🎯 Over 15 years of manufacturing excellence
- 🔧 R&D support and documentation available
- 📦 Thousands of SIMs ready for global delivery
- 🧱 Compatible with SIM card creator, sim personalization tools, open-source testbeds
Whether you need 100 test SIMs or 10,000 MVNO-grade units, HKCARD is your trusted partner.
- HKCARD programmable 5G SA USIM cards writable IMSI Ki OPc memory 128k-512k
- White label blank SIM cards custom 2FF 3FF 4FF form factors for MVNO suppliers
- Writable IMSI, Ki, OPc SIM Cards for 5G SA & LTE – Bulk and Custom Supply
- Reprogrammable USIM Cards for IoT & LTE Networks – HKCARD Manufacturer
- 5G NR SIM Card Supplier – HKCARD’s SysmoISIM Alternatives for Network Testers
- White Label MVNO SIM Cards with IMSI Customization – Direct from Manufacturer
- Blank SIM Cards for Developers – Compatible with pySim, VoLTE, eSIM Projects
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📞 Contact Us Today
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
📦 Volume Discounts | 🌐 DHL Global Shipping | ⚙️ Engineer Support |
