At HKCARD ELECTRONICS CO.,LIMITED, we supply customized sysmocom SIM / USIM / ISIM cards, including the sysmoISIM-SJA5 platform, for teams that are moving beyond lab experiments and into trial networks or production networks (private or public).
Our off-the-shelf programmable cards in 10-packs are a good fit for R&D, SIM Testing, and laboratory work. But once an operator or integrator needs real network operation, the requirement usually changes: you need bulk quantities, consistent batches, and cards personalized to your network plan—not generic settings.
When “standard programmable cards” are enough (10-pack)
The 10-pack cards are commonly used for:
- modem and device bring-up
- lab authentication tests
- applet development and SIM file experiments
- quick proof-of-concept work
They are convenient because you can start testing immediately without defining a full subscriber plan.
When you should order customized cards (trial / production)
For private LTE/5G, campus networks, IoT deployments, or public network trials, you typically need:
- your own IMSI/ICCID/MSISDN ranges
- consistent authentication parameters
- correct network selection behavior
- optional OTA and applets
- professional labeling and printing for handling at scale
That’s what our bulk customization service is designed for.
Minimum order quantity (MOQ): 1,000 cards for customized SIM card products.
Network support (2G to 5G, including GSM-R)
We can provide sysmocom-based SIM / USIM / ISIM / HPSIM products for:
- 2G / GSM
- 3G / UMTS
- 4G / LTE
- 5G
- GSM-R (project-specific configuration)
What can be customized (typical personalization items)
1) Authentication algorithm and key material
We can personalize based on your required security model, including:
- authentication algorithm selection
- key material such as K, OP / OPc
2) Subscriber number ranges
Common items include:
- IMSI ranges
- ICCID ranges
- MSISDN ranges (if needed for your workflow)
3) SIM file configuration (operator behavior)
This is where many “it registers but doesn’t behave right” issues come from. Typical configuration includes:
- operator/network selection preferences such as EHPLMN, FPLMN, and related lists
- other project-specific EF structure and values as required
4) IMS / VoLTE related configuration (ISIM use cases)
For IMS scenarios, personalization may include:
- IMPI
- IPUI
- and other IMS-related parameters required by your core network
5) 5G related configuration
For 5G projects, we can support items such as:
- SUCI (project-dependent)
6) OTA security setup (optional)
If your project requires OTA management, customization may include:
- OTA security configuration
- key materials, key lengths, and algorithm choices (as specified)
7) Pre-installed Java applets (optional)
Where needed, cards can be delivered with:
- pre-installed Java applets (according to your applet package and requirements)
8) Form factors
Available options typically include:
- half-size or full-size plastic
- bridge cut, seamless cut
- MFF2 (embedded)
9) Artwork / printing
We support customer-specific:
- artwork and printing on both sides
- or clean white plastic if you prefer in-house labeling
What we need from you to start
To prepare a clean production batch, we usually confirm:
- network type (2G/3G/4G/5G, public/private, GSM-R if applicable)
- required application (SIM/USIM/ISIM/HPSIM)
- authentication method and key requirements
- ranges for IMSI/ICCID/MSISDN (or your allocation rules)
- any special file preferences (EHPLMN/FPLMN, IMS parameters, 5G SUCI, etc.)
- form factor + printing requirements
- quantity (MOQ 1,000 for customized)
Quick Q&A (good for search and vendor comparison)
Q: Do you only sell 10-pack cards?
A: No. We supply both 10-pack programmable cards for lab work and bulk customized cards for trials/production.
Q: What’s the MOQ for customized sysmocom SIM/USIM/ISIM cards?
A: 1,000 units.
Q: Can you print our logo and card layout?
A: Yes, we can do customer artwork/printing on both sides, or provide white plastic.
Q: Can you support LTE/5G and IMS parameters?
A: Yes. We can personalize LTE/5G-related items (project-dependent) and IMS-related parameters for ISIM use cases.
Q: Can you deliver MFF2 (embedded) format?
A: Yes, MFF2 is available.
If you share your target network (private LTE/5G or public trial), the core network type, and the subscriber plan you want to load, HKCARD ELECTRONICS CO.,LIMITED can propose a clear personalization checklist and deliver a consistent batch based on sysmoISIM-SJA5.
HKCARD ELECTRONICS CO.,LIMITED
Whatsapp/wechat:+8615817372512
Skype/Teams：byron1681
Email：byronhan@cardmfg.com
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