HKCARD: Your Trusted Supplier of Custom, Writable, and 5G-Ready SIM Cards | 10+ Years of Expertise
HKCARD – Custom, Writable & 5G SIM Cards Supplier | 10+ Years Experience | Sysmocom & Open Source Compatible
HKCARD Electronics Co., Ltd. offers programmable, reprogrammable, and blank SIM cards for 4G, 5G, IoT, and more. Compatible with Sysmocom, pySim, and open-source tools. Fast delivery & expert support.
Introduction
For over a decade, HKCARD Electronics Co., Ltd. has been a global leader in delivering high-performance SIM card solutions for mobile networks, IoT, and enterprise applications. Whether you need writable IMSI SIM cards, 5G NR SA programmable SIMs, or blank eSIM cards, our products are engineered for flexibility, reliability, and compatibility with industry-standard tools like Sysmocom, pySim, and open-source LTE/5G stacks.
Writable and Reprogrammable SIM Cards for Every Need
HKCARD specializes in fully writable SIM cards, enabling dynamic updates to critical parameters such as IMSI, Ki, OP/OPc, ICCID, and MNC/MCC. Our solutions include:
- Writable IMSI SIM Cards and Writable Ki SIM Cards for network testing and authentication.
- Writable OP/OPc SIM Cards and Writable SPN SIM Cards for routing and service personalization.
- Re-programmable (not one-time burn) SIM Cards for labs, universities, and iterative development.
- Programmable SIM Cards using PC/SC tools (e.g., pySim) for seamless integration with your systems.
4G, 5G, and IoT-Specific SIM Solutions
- USIM/LTE SIM Cards: Non-GSM-only options for 4G/WCDMA networks, ideal for VoLTE and data services.
- Programmable 5G NR 3GPP R16 SA SIM Cards: Future-proof your network with 5G Standalone (SA) compatibility.
- Custom SIM Cards for 4G LTE & 5G NR Networks: Tailored form factors, capacities (128K, 256K, 512K), and branding.
- IoT/Evaluation SIM Cards: Blank or pre-provisioned cards for IoT device prototyping and field trials.
- Blank eSIM Cards: Ready for remote provisioning via SM-DP+ servers.
Flexible Form Factors and Specialized Applications
Choose from 2FF, 3FF, and 4FF SIM card sizes, or opt for nano-USIM, white SIM cards, or NFC-enabled SIMs. Our product range includes:
- Multi-network 4G VoLTE SIM Cards for global roaming.
- Bulk SIM Cards and white-label MVNO SIMs for operators and resellers.
- Dummy SIM Cards, fake SIMs, and blank SIM cards for testing or placeholder use.
- SAIM cards, TD SIM Cards, and parking SIM cards for niche applications.
Full Compatibility with Sysmocom, pySim, and Open-Source Tools
HKCARD’s SIM cards are designed to work seamlessly with:
- Sysmocom ecosystems (sysmoISIM-SJA2, sysmoUSIM-SJS1, SJA5).
- pySim and PC/SC tools for easy programming.
- Open-source 4G/5G stacks like Open5GS, srsRAN, and USIM test solutions.
Why choose HKCARD over Sysmocom?
Our cards offer identical form-/function-/file-system compatibility with better availability and pricing. No more supply chain delays!
FAQ Section (10 Questions)
Q1: What is a writable IMSI SIM card?
A1: A writable IMSI SIM card allows you to reprogram the International Mobile Subscriber Identity (IMSI) for network testing, development, or dynamic user management.
Q2: Do your SIM cards support 5G NR?
A2: Yes! We offer Programmable 5G NR 3GPP R16 SA SIM Cards for next-gen standalone 5G networks.
Q3: Are your SIM cards compatible with Sysmocom?
A3: Absolutely. Our cards are fully compatible with Sysmocom tools like pySim and hardware (SJA2, SJS1, SJA5).
Q4: What form factors do you offer?
A4: We provide 2FF, 3FF, 4FF, nano-USIM, and blank eSIM cards in capacities from 128K to 512K.
Q5: Can I get blank or dummy SIM cards?
A5: Yes, we supply blank SIM cards, dummy SIMs, and fake SIMs for prototyping or testing.
Q6: Do you support pySim and open-source tools?
A6: Yes, our SIM cards are pre-verified for use with pySim, Open5GS, srsRAN, and other open-source platforms.
Q7: What is the difference between reprogrammable and one-time burn SIMs?
A7: Reprogrammable SIM cards can be updated multiple times, while one-time burn SIMs are fixed after initial programming.
Q8: Do you offer custom-branded SIM cards?
A8: Yes! We provide white-label MVNO SIMs, offbrand SIMs, and fully customized designs for enterprises.
Q9: Are your SIMs suitable for IoT applications?
A9: Definitely. Our IoT/Evaluation SIM Cards and programmable 4G/5G SIMs support remote management and global connectivity.
Q10: How quickly can I get my order?
A10: Most orders ship within 24–48 hours. Contact us at byronhan@cardmfg.com for urgent requests!
- “Get 5G-Ready SIM Cards with HKCARD: Customizable, Reprogrammable & Sysmocom-Compatible”
- “Blank SIM Cards for 4G, 5G, and IoT – Fast Delivery from HKCARD”
- “Why Choose HKCARD Over Sysmocom? Better Pricing, Same Compatibility”
- “Programmable SIM Cards for Open-Source 5G Networks – HKCARD Solutions”
- “Bulk SIM Card Supplier: White-Label, Custom, and Blank Options from HKCARD”
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- “HKCARD Electronics: Custom 5G NR SIM Cards for Open-Source Networks”
- “Writable IMSI SIM Cards and Sysmocom-Compatible Solutions from HKCARD”
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
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