1. What this card is
This is a programmable blank LTE USIM for telecom operator projects, device labs, and authorized personalization work. It is a 4G LTE SIM blank card with 128K capacity and a 3-in-1 body: Standard, Micro, and Nano on one card.
HKCARD ELECTRONICS CO.,LIMITED / HKCARD supplies the cards as blank stock, or writes customer-provided data before shipment. The COS is already installed. You do not need to load a card OS. Most work is limited to writing operator fields during personalization.
A SIM tool can be provided on request.
2. Product snapshot
| Item | Detail |
|---|---|
| Name | LTE Blank USIM Card |
| Type | SIM / USIM, blank or programmable |
| Mode | 4G LTE SIM blank card |
| Capacity | 128K |
| Sizes | Standard SIM, Micro SIM, Nano SIM (3 in 1) |
| Slots | 2FF, 3FF, 4FF |
| Networks | 4G FDD LTE, WCDMA, GSM |
| Writable data | ICCID, IMSI, KI, OPC, PIN, PUK, ADM |
| Use | Telecommunications operator and authorized projects |
3. Why teams pick a blank LTE USIM
A finished consumer SIM is locked to one profile. A blank LTE USIM is useful when you still need to set identity data, run lab trials, or keep one card format across many devices.
Common reasons people contact HKCARD:
- One SKU that fits mini, micro, and nano trays
- Cards that work on 4G FDD LTE, with WCDMA and GSM fallback
- Option to buy blank cards, or have data written in-house
- Repeatable stock for operator tests and device QA
This product is intended for authorized telecom and industrial use. KI, OPC, and ADM are operator secrets. Only use data you are allowed to handle.
4. Card size: Mini, Micro, Nano on one piece
The card is a triple-format punch card:
- 2FF / Standard / Mini SIM — older routers, industrial modules, some POS units
- 3FF / Micro SIM — many mid-size terminals and test phones
- 4FF / Nano SIM — most current phones, trackers, and compact CPE
You punch the size you need. That keeps inventory simple when one batch has to cover mixed hardware.
5. Network compatibility
The card is specified for:
- 4G FDD LTE — main use on current LTE networks
- WCDMA — 3G where it is still in service
- GSM — 2G for basic attach or fallback tests
Final attach and voice/data behavior still depend on the device modem, bands, and the profile written on the card. If you tell HKCARD the device model and target region, the team can confirm whether this blank LTE USIM is a match.
6. What can be written
Depending on the project, the following fields can be written:
- ICCID — card serial / identity on the operator side
- IMSI — subscriber identity used for network attach
- KI — authentication key (authorized use only)
- OPC — operator variant used with the auth algorithm
- PIN / PUK — user lock and unlock codes
- ADM — administrative key for later file updates
Two supply methods:
- Blank cards — you personalize them with your own approved process.
- HKCARD programming — you send the authorized data set; HKCARD writes it into the SIMs.
COS does not need to be programmed. The card ships with COS already on chip.
7. SIM tool
A SIM tool is available on request. Say whether you need it for lab writing, incoming inspection, or a small pilot. Tool choice depends on volume and how you verify cards after writing.
8. Typical applications
- Telecom operator integration and closed trials
- Device QA: attach, data session, reboot, and long-run checks
- Hardware validation for routers, CPE, trackers, POS, and modules
- Lab work where the same card format must be reused across benches
Not for unauthorized cloning, service theft, or any use of keys you do not own.
9. How to order from HKCARD
Send a short note with:
- Quantity and ship-to country
- Format: 3-in-1, or only 2FF / 3FF / 4FF
- Blank cards, or factory-written cards
- Network target: LTE / WCDMA / GSM and region
- If writing is required: which fields (ICCID, IMSI, KI, OPC, PIN, PUK, ADM)
- Whether you need a SIM tool
HKCARD ELECTRONICS CO.,LIMITED / HKCARD can quote blank stock, programmed lots, or mixed shipments.
10. Short FAQ
Do I need to program COS?
No. COS is already installed.
Can one card fit all three trays?
Yes. It is a 3-in-1 Standard / Micro / Nano card (2FF / 3FF / 4FF).
Can HKCARD write the data for us?
Yes, if you provide authorized data. HKCARD can also ship blank cards only.
What networks does it cover?
4G FDD LTE, WCDMA, and GSM, subject to device and profile.
What is the memory size?
128K.
Contact HKCARD ELECTRONICS CO.,LIMITED / HKCARD
- Email: byronhan@cardmfg.com
- Website: https://www.cardmfg.com/
- WhatsApp / WeChat: +86 158 1737 2512
Ask for Programmable Blank LTE USIM 4G Card — Mini / Micro / Nano and include quantity plus blank or programmed.
#ProgrammableBlankLTEUSIM #BlankSIMCard #4GLTEUSIM #WritableSIMCard #TelecomOperatorSIM
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