HKCARD Electronics | Programmable 5G USIM Cards, 4G VoLTE SIM & Programming Kits for Telecom Operators
Ten Years In. Still Solving the Same Problem Nobody Talks About.
Most people assume sourcing SIM cards is straightforward. Order the cards, they arrive, you program them, done.
The reality is messier. The 5G USIM you ordered does not authenticate against your SA core. The VoLTE SIM passes registration but drops IMS calls. The programming software does not recognize your reader hardware. The supplier who seemed helpful before the order is now slow to respond.
HKCARD ELECTRONICS CO., LIMITED has been in this industry for over ten years. We manufacture and supply programmable 5G USIM cards, blank 4G VoLTE SIM cards, complete programming kits, and OEM/ODM custom SIM solutions to telecom operators, IoT developers, MVNOs, and network engineers worldwide.
We know where the problems hide, and we build our products to avoid them.
5G USIM Cards — 3GPP Release 16 Compliant
5G authentication is fundamentally different from 4G. The 5G AKA protocol, SUPI/SUCI concealment, and the interaction between the USIM and the 5G core’s UDM require a card that is built specifically for the job — not a repurposed LTE SIM with updated marketing.
HKCARD 5G USIM cards are engineered to 3GPP Release 16 specification from the ground up.
What That Means in Practice:
- Full 5G SA (Standalone) and 5G NSA (Non-Standalone) network mode support
- 5G AKA authentication with SUPI/SUCI privacy protection
- 4FF Nano SIM form factor — compatible with all current 5G handsets and modules
- VoNR (Voice over New Radio) capable file structure
- Milenage algorithm support with writable Ki, OPc, and OP parameters
- Backward compatible with 4G LTE, 3G WCDMA, and 2G GSM
5G USIM Product Variants:
| Product | Key Feature |
|---|---|
| Blank Programmable 5G NR ISIM Card | SA/NSA compatible, full parameter write access |
| 5G USIM — 4FF Nano format | Ready for 5G NR device testing and deployment |
| Programmable Blank 5G NR ISIM Card RSP | GSMA RSP compatible for eSIM workflows |
| 5G USIM for VoLTE/VoNR operators | IMS file structure pre-loaded |
5G Programming Kits — Hardware, Software, Cards Together
A 5G USIM card sitting on a desk without the tools to program it is not useful to anyone. HKCARD supplies complete programming kits that include everything needed to go from blank card to authenticated subscriber in a single setup.
5G Programming Kit Contents:
Kit Option A — Development Bundle:
- 1x SIM Card Reader/Writer (5G USIM compatible)
- 3x Blank Programmable 5G NR ISIM Cards
- 5G Java 4.2.11 Version Personalize Tools (software)
- Full parameter write access: IMSI, Ki, OPc, OP, ICCID, SPN, MNC, MCC
Kit Option B — Extended Bundle:
- 1x SIM Card Reader/Writer
- 3x Blank Programmable 5G NR ISIM Cards
- 5G Java 4.2.5 Version Personalize Tools (software)
- Compatible with Open5GS, free5GC, srsRAN, and Osmocom deployments
These kits are used in 5G lab environments, private network deployments, device certification programs, and university research projects running open-source 5G stacks.
4G VoLTE SIM Cards — Blank, Writable, and Production-Ready
VoLTE testing and deployment has its own set of SIM requirements. The IMS file structure needs to be present and correctly configured, the ISIM application needs to contain valid IMPI and IMPU parameters, and the authentication credentials need to match the IMS core configuration.
HKCARD blank VoLTE SIM cards ship with the correct file structure in place. You write your credentials, and the card works.
Available Form Factors:
- 2FF Mini SIM — for legacy devices and test equipment
- 3FF Micro SIM — for mid-generation smartphones and test benches
- 4FF Nano SIM — for current-generation smartphones and modules
- 3-in-1 Triple Cut — all three formats in a single card, punch out as needed
Supported Protocols:
- 4G LTE FDD and TDD
- 3G WCDMA / HSPA
- 2G GSM / GPRS / EDGE
- IMS / VoLTE — ISIM application with IMPI/IMPU support
- Milenage authentication — Ki, OPc, OP writable
Writable Parameters:
Every parameter that matters for network authentication and operator configuration is writable on HKCARD VoLTE SIM cards:
- ICCID — card identification
- IMSI — subscriber identity
- ADM key — administrative access
- Ki — authentication key
- OPc / OP — Milenage operator keys
- SPN — service provider name shown on device
- MNC / MCC — network identity codes
4G VoLTE Programming Kits
Same principle as the 5G kits — we supply the complete setup so you are not sourcing hardware and software from three different places and hoping they work together.
VoLTE Programming Kit Options:
Starter Kit:
- 1x 4G LTE SIM Card Reader/Writer Programmer
- 5x 128K 4G VoLTE Blank ISIM Cards
- 1x Programming Software License
- Supports: ICCID, IMSI, ADM, Ki, OPc, OP, Milenage
Advanced Kit:
- 1x LTE WCDMA SIM Card Reader/Writer Programmer
- 5x Blank Programmable 4G LTE USIM Cards (128K)
- Advanced VoLTE ISIM personalization software
- Full multi-RAT support: LTE / WCDMA / GSM
Compact VoLTE Programmer Kit:
- Designed for bench engineers who need a portable, single-unit solution
- Covers VoLTE ISIM and standard USIM programming
- Suitable for field testing, lab work, and small-scale personalization
Bulk Orders — 100 Pieces Per Lot and Above
Not every customer needs three cards for a lab evaluation. Many of our customers are deploying at scale — MVNOs building a subscriber base, IoT platform companies provisioning device fleets, factories testing production handsets.
HKCARD supplies writable programmable SIM cards in bulk:
- 100 pieces / lot — Writable Programmable Blank SIM ISIM USIM Cards
- Available in 2FF / 3FF / 4FF 3-in-1 format for maximum flexibility
- Supports: 4G LTE, WCDMA, GSM
- Full parameter write capability on every card in the batch
- Consistent batch-to-batch quality — same hardware revision, same software compatibility
For orders above 1,000 pieces, contact us for volume pricing and lead time confirmation.
OEM & ODM Custom SIM Card Services
Sometimes the standard product range is exactly what you need. Other times, you need something built to your specification — your PLMN, your authentication parameters, your branding, your packaging.
HKCARD has been handling OEM and ODM SIM card orders for over a decade. We are set up for it operationally, and we understand what operators and device manufacturers actually need from a custom SIM card supplier.
OEM / ODM Services Include:
Card Design & Branding:
- Custom SIM card artwork and printing
- Operator logo, brand colors, and card layout
- LTE USIM Card Design templates provided as a starting point
Parameter Personalization:
- IMSI range allocation and ICCID assignment
- Ki generation and secure loading
- OPc/OP configuration for Milenage
- SPN, MNC, MCC pre-loaded
Packaging Options:
- Retail blister packs
- Bulk trays for factory use
- Individually packaged with PIN/PUK documentation
Specialized OEM Products:
- Blank iSIM Card — 4G VoLTE WCDMA GSM with Milenage algorithm support
- Programmable JAVA Blank eSIM Card RSP — 2FF/3FF/4FF GSMA compatible for eSIM workflows
- Empty 4G VoLTE Program SIM Card — 128K ISIM/USIM with full writable parameter set
- Nano Micro Mini Programmable JAVA SIM — multi-format for diverse device compatibility
Who Uses HKCARD SIM Cards and Kits
Telecom Operators
MNOs and MVNOs deploying 4G and 5G services who need SIM cards personalized to their network specifications, with custom branding and bulk supply capability.
Network Equipment Labs
Engineers validating 5G SA core deployments, testing IMS configurations, and running protocol conformance scenarios who need programmable SIM cards that give them full credential control.
IoT Platform Companies
Businesses deploying connected devices at scale — metering, tracking, industrial sensors — who need SIM cards configured for their hosted core network or private LTE/5G deployment.
Device Manufacturers
Handset and module manufacturers running production line tests who need test SIM cards pre-configured for their CMW500, CMU200, or Anritsu test bench environments.
Open Source Network Developers
Researchers and engineers running Open5GS, free5GC, srsRAN, or Osmocom who need affordable programmable SIM cards with full IMSI/Ki/OPc write access and no unnecessary minimum order requirements.
Certification Laboratories
GCF, PTCRB, and carrier acceptance test programs that require documented, repeatable SIM configurations for consistent test execution.
International Supply — Global Reach, Local Understanding
HKCARD ships to customers across Asia, Europe, the Middle East, Africa, and the Americas. We maintain localized product documentation for key markets and understand the regulatory and technical context that differs between regions.
Our international customers include operators launching greenfield networks in Africa, MVNO entrants in European markets, IoT platform companies in Southeast Asia, and private 5G network integrators in industrial markets across North America and Europe.
If you are in a market not listed here, contact us anyway. We ship globally and have experience navigating export documentation for SIM card products.
Frequently Asked Questions
Are your 5G USIM cards truly 3GPP Release 16 compliant?
Yes. Our 5G USIM cards are built to Release 16 specification, covering 5G AKA authentication, SUPI/SUCI privacy, and both SA and NSA network modes. This is not a retroactively updated 4G card — it is a purpose-built 5G USIM.
Do the 5G programming kits include everything I need to get started?
Yes. Our kits include the reader/writer hardware, blank programmable SIM cards, and personalization software. You need a computer with a USB port and your target network parameters. That is it.
Can I write my own Ki and OPc values to the blank SIM cards?
Yes, for authorized telecom and testing use cases. The cards support full parameter write access including Ki, OPc, OP, IMSI, ICCID, ADM, SPN, MNC, and MCC.
Do your VoLTE SIM cards work with open-source IMS cores?
Yes. Our VoLTE ISIM cards have been used with Kamailio-based IMS, OpenIMS Core, and commercial IMS platforms. Share your IMS configuration and we can advise on the appropriate card and parameter setup.
What is the Milenage algorithm and do your cards support it?
Milenage is the authentication and key agreement algorithm defined in 3GPP TS 35.205/206, used across 3G, 4G, and 5G networks. All HKCARD programmable SIM cards support Milenage with writable Ki, OPc, and OP parameters.
Can you supply cards pre-personalized before shipment?
Yes. Provide your IMSI range, Ki values, ICCID range, and any additional parameters and we personalize the cards in our facility before shipping. Cards arrive ready for immediate deployment.
What is the minimum order for bulk SIM cards?
Our standard bulk lot is 100 pieces. For smaller evaluation quantities, contact us — we accommodate small orders for engineers who need to test before committing to volume.
Do you support eSIM / RSP workflows?
Yes. We supply Programmable JAVA Blank eSIM Cards with GSMA RSP compatibility in 2FF/3FF/4FF formats for operators and developers working with eSIM provisioning platforms.
Are your SIM cards compatible with sysmocom toolchains?
Yes. Our programmable SIM cards are compatible with sysmoISIM-SJA2 and SJA5 toolchains and work with Osmocom, srsRAN, Open5GS, and free5GC out of the box.
How do I get a quote?
Contact us via WhatsApp, email, or Skype with your product type, quantity, form factor, and any customization requirements. We respond within one business day with pricing and lead time.
Contact HKCARD Electronics
Whether you need three programmable 5G USIM cards for a lab evaluation or ten thousand personalized VoLTE SIMs for an MVNO launch, the process starts the same way — a direct conversation with our team.
We do not route telecom inquiries through a generic sales queue. You will talk to someone who understands SIM card specifications and can give you a straight answer.
📧 Email: byronhan@cardmfg.com
🌐 Website: www.cardmfg.com
📱 WhatsApp / WeChat: +86 158 1737 2512
💬 Skype / Teams: byron1681
HKCARD ELECTRONICS CO., LIMITED — Programmable 5G USIM Cards | Blank 4G VoLTE SIM | SIM Programming Kits | OEM SIM Supplier | 3GPP Release 16 | Global Supply
