Programmable SIM Cards Supplier | 5G USIM, Writable IMSI/KI/ICCID, Blank SIM Cards Wholesale – HKCARD
HKCARD Electronics – 15+ years trusted manufacturer of reprogrammable USIM cards, 5G SA 128K/256K/512K SIMs, writable IMSI/KI/OPc/ICCID, sysmoISIM-SJA2/SJA5, blank eSIM, IoT test SIM cards. Bulk & custom orders shipped worldwide in 24-48h.
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Why HKCARD Is the Most Trusted Name in Programmable SIM Cards in 2026
With over 15 years of specialized experience in the mobile phone SIM cards industry, HKCARD Electronics Co., Limited has become the go-to supplier for operators, MVNOs, IoT developers, network testers, and private LTE/5G network builders worldwide.
We specialize in fully reprogrammable (not one-time programmable) USIM cards that support GSM, WCDMA, LTE, and 5G NR SA (Standalone) networks – including the latest 3GPP R16/R17 standards.
Unlike cheap “one-time burn” cards flooding the market, every HKCARD SIM is genuinely re-writable thousands of times using standard PC/SC tools such as pySim, pcsc-tools, or our free HKCARD Programmer software.
Our Best-Selling Programmable SIM Card Series (2026Updated)
1. Programmable 5G NR 3GPP R16/R17 SA USIM Cards
- 128K / 256K / 512K variants available
- Full SUCI support, 5G-AKA authentication
- Native 5G SA support (no fallback required)
- Models: sysmoISIM-SJA5, sysmoISIM-SJA2 compatible
2. Writable IMSI / KI / ICCID / OPc / MCC/MNC / SPN SIM Cards
- Change IMSI freely – including free IMSI ranges for testing
- Direct Ki/OPc writing – Comp128v1/v2/v3, MILENAGE, TUAK
- ICCID batch programming supported
3. Blank 4G LTE / WCDMA / GSM USIM Cards
- White card (unprinted) or custom printing
- 2FF / 3FF / 4FF / MFF2 (eSIM ready) form factors
- Java Card OS (JCOP, native) options available
4. IoT & Evaluation SIM Cards
- Multi-IMSI, multi-operator profiles
- Remote SIM provisioning ready
- eUICC / consumer eSIM blanks also available
5. Special Series
- NFC SIM cards (SIM wallet + access control)
- CDMA / RUIM cards
- Half-size LTE trio SIM cards (2FF+3FF+4FF punch-out)
- Dummy SIM cards / test SIM cards for terminal validation
All Cards Are Fully Re-Programmable Using Standard Tools
- pySim, pcsc-sharp, CardPeek, OpenSCA, HKCARD Programmer (free Windows/Linux/Mac)
- No expensive proprietary programmers required
- Bulk programming mode – program 1000+ cards per hour
Why Customers Choose HKCARD Over AliExpress/Off-Brand Suppliers
✓ 15+ years 100% positive track record (thousands of repeat customers)
✓ Same-day shipping from Hong Kong for in-stock items
✓ Full technical support – we provide free ADM keys & programming guides
✓ Genuine sysmocom-compatible quality (sysmoISIM-SJA2 / SJA5 direct replacement)
✓ Volume pricing starts at cheaper USD/card (10k+ qty)
✓ Custom printing & packaging available (white label MVNO SIM cards)
Frequently Asked Questions (FAQ)
Q1: Are your programmable SIM cards truly re-writable unlimited times?
Yes. Unlike OTP (one-time programmable) cards, HKCARD cards use genuine Java Card platform and can be erased and reprogrammed thousands of times.
Q2: Do your 5G cards support Standalone (SA) mode?
Yes – all our 5G series support 3GPP R16/R17 SA mode with full SUCI calculation and 5G-AKA.
Q3: Can I write my own Ki and IMSI freely?
Absolutely. You have full access to write IMSI, Ki, OPc, ICCID, SPN, MNC/MCC, ADM keys, etc.
Q4: What tools do you recommend for programming?
pySim (free), our HKCARD Programmer GUI (free download), or any PC/SC reader (ACR122, Proxmark3, etc.).
Q5: Do you supply blank eSIM / iUICC?
Yes – MFF2 solderable eSIM blanks and consumer eSIM profiles available.
Q6: What is the difference between sysmoISIM-SJA2 and SJA5?
SJA5 is the newer 512K version with native 5G SA R16 support; SJA2 is 128K and widely used for 4G/5G NSA testing.
Q7: Can these cards be used for VoLTE and 5G VoNR?
Yes – full IMS support, tested with Amarisoft, Open5GS, srsRAN, and commercial networks.
Q8: Do you offer white label/custom printing for MVNOs?
Yes – custom artwork, SPN, operator name printing available from 500 pcs.
Q9: Minimum order quantity?
No MOQ for samples (pay only shipping). Bulk orders start at 100 pcs for best pricing.
Q10: How fast can you ship?
In-stock items ship the same day from Hong Kong. DHL Express 2-4 days worldwide.
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- IoT Test SIM Cards & Multi-IMSI Programmable USIM – Fast Shipping
1 : HKCARD programmable 5G SA USIM cards 128K 256K 512K sysmoISIM-SJA5 bulk package
2 : Writable IMSI KI ICCID OPC blank white SIM cards in 2FF 3FF 4FF form factors HKCARD Electronics
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Contact us :
HKCARD ELECTRONICS CO., LIMITED
📧 Email:byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp/Wechat: +8615817372512
Over 50,000 satisfied customers since 2009 – join them now.
