HKCARD – Programmable 5G/4G USIMs, Writable IMSI/Ki/ICCID, Sysmocom‑Compatible SIM Cards
HKCARD ELECTRONICS supplies writable, re‑programmable SIM/USIM cards for 5G NR R16 SA, 4G LTE/WCDMA, IoT, and MVNOs. Compatible with pySim, Open5GS, srsRAN, and Sysmocom. Bulk, white‑label, and custom solutions available.
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HKCARD ELECTRONICS: Your Trusted Supplier of Programmable SIM/USIM for 5G, 4G LTE & IoT
With more than a decade of experience in the mobile phone SIM cards industry, HKCARD ELECTRONICS CO., LIMITED is a leading sim card manufacturer and bulk supplier. We provide writable, re‑programmable SIM/USIM cards that meet the needs of MVNOs, labs, universities, private 4G/5G operators, and IoT developers.
1. What We Offer
| Category | Key Features | Typical Use‑Case |
|---|---|---|
| Writable & Re‑Programmable SIMs | IMSI, Ki, ICCID, OP/OPc, KEY, SPN, MNC, MCC | Lab testing, private network provisioning, MVNO activation |
| 5G & 4G Product Line | Programmable 5G NR 3GPP R16 SA SIM, 5G USIM, USIM/LTE (not GSM‑only), 4G LTE/WCDMA blank cards | 5G NR deployments, LTE private networks, device testing |
| Tools & Stacks | PC/SC + pySim, Open5GS, srsRAN | Open‑source LTE/5G labs, university research |
| Form Factors & Memory | 2FF / 3FF / 4FF (nano‑USIM), 128k / 256k / 512k | Custom hardware, embedded devices, high‑capacity SIMs |
| White‑Label & Bulk | White sim cards, white label MVNO SIM cards, bulk sim | MVNO launch, OEM, resellers |
2. Writable & Re‑Programmable SIM Cards (Not One‑Time Burn)
Engineers can freely program and re‑program key fields using PC/SC tools such as pySim and other sim personalize tools.
- Writable IMSI SIM Cards (also searched as “writable imsi sim cards free”)
- Writable Ki SIM Cards
- Writable ICCID SIM Cards
- Writable OP or OPc SIM Cards
- Writable KEY SIM Cards
- Writable SPN SIM Cards
- Writable MNC SIM Cards
- Writable MCC SIM Cards
These cards are ideal for USIM test solution environments, private 4G/5G networks, and MVNO provisioning.
3. 5G & 4G Product Line
| Product | Description | Key Specs |
|---|---|---|
| HKCARD’s Programmable SIM Cards for 5G Networks | 5G NR 3GPP R16 SA SIM, 5G SA 128k SIM | 5G NR, R16 SA, 128k memory |
| USIM / LTE SIM Cards (not GSM‑only) | 4G LTE/WCDMA blank cards, USIM LTE | 4G LTE, WCDMA, USIM |
| IoT/Evaluation SIM Cards | Blank SIMs for device testing | 4G/5G, NFC, Java applet support |
| Custom SIM Cards for 4G LTE & 5G NR Networks | Tailored for private networks | Custom file‑system, SPN, MNC, MCC |
| Blank eSIM | For lab evaluation and integration | eSIM, 5G NR, R16 SA |
4. Form Factors & Memory Options
- 2FF / 3FF / 4FF SIM Cards (nano‑USIM, half‑simcard LTE trio, simcard half LTE)
- Memory: 128k SIM / 128k USIM / 128k USIM, 256k SIM, 512k SIM
- Special Variants: Java SIM card, sim wallet NFC, nfc sim, sim card nfc, suci sim card (5G privacy), cdma sim card, uim card, ruim card
5. Compatibility with Sysmocom, pySim & Open‑Source Tools
Many customers search for sysmocom SIM card / sysmocom SIM cards / sysmocom SIM (e.g., sysmoISIM‑SJA2, sysmoUSIM‑SJS1, sysmoISIM‑SJA5, SJA2).
- HKCARD offers form‑, function‑, and file‑system‑compatible alternatives with better availability and competitive pricing.
- Seamless integration with pySim and other PC/SC‑based programming tools.
- Works flawlessly with open‑source LTE/5G stacks such as Open5GS and srsRAN.
Looking for Sysmocom Alternatives? Choose HKCARD’s programmable test SIM cards for faster lead times and lower cost.
6. Who Uses HKCARD SIM Cards?
- MVNOs & Wholesale Buyers – bulk, white‑label, and custom SIM solutions.
- Labs & Universities – USIM test solution environments, 5G NR R16 SA labs.
- Private 4G/5G Operators – custom SIMs for LTE/WCDMA and 5G NR networks.
- IoT & M2M Developers – blank SIMs, NFC‑enabled SIMs, Java applet support.
7. Ordering & Customization
- Select capacity (128k/256k/512k) and form factor (2FF/3FF/4FF).
- Define writable fields (IMSI, Ki, OPc, ICCID, MNC, MCC).
- Choose branding – white label, artwork, packaging, or custom printing.
- Request a quote – we provide fast turnaround and competitive pricing.
8. Frequently Asked Questions (FAQ)
| # | Question | Answer |
|---|---|---|
| 1 | Do HKCARD SIM cards work with pySim? | Yes – all programmable USIMs are pySim‑ready and work with standard PC/SC readers. |
| 2 | Can I rewrite IMSI, Ki, OPc, ICCID multiple times? | Absolutely – these are re‑programmable (not one‑time burn) cards for iterative testing. |
| 3 | Do you support 5G Standalone (SA) R16? | Yes – we supply Programmable 5G NR 3GPP R16 SA SIM Card models, including 5G SA 128k SIM. |
| 4 | Are your cards compatible with Sysmocom workflows? | Yes – form/function/file‑system compatible alternatives to popular Sysmocom models. |
| 5 | Do you offer white‑label MVNO SIM cards? | Yes – white sim cards, white label mvno sim cards, custom printing, and bulk packaging. |
| 6 | Do you provide NFC features? | Yes – nfc sim / sim card nfc for wallet and secure applets; supports sim cards near field communication market. |
| 7 | What form factors and memories are available? | 2FF / 3FF / 4FF (nano‑usim, half simcard lte trio) with 128k, 256k, and 512k options. |
| 8 | Do you sell blank eSIM? | We provide blank esim for lab evaluation and integration testing (subject to regional regulations). |
| 9 | Do you support CDMA/UIM/RUIM cards? | Yes – cdma sim card, uim card, ruim card options are available for legacy requirements. |
| 10 | Can you supply 4G LTE/WCDMA and GSM? | Yes – USIM/LTE (not GSM‑only). We also offer 4G GSM SIM card and 4G LTE/WCDMA blank cards for device and network tests. |
9. Contact Us
Ready to get started?
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
Request a sample or bulk quote today – let HKCARD power your next 5G or 4G project.
- `HKCARD programmable 5G NR R16 SA
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