When building test environments or deploying network solutions, telecom operators and device manufacturers need reliable, flexible SIM cards. HKCARD ELECTRONICS CO.,LIMITED (HKCARD) provides high-quality programmable blank LTE USIM cards designed specifically for professional telecom applications.
Below is a detailed breakdown of our 4G LTE blank USIM cards, including specifications, writable fields, and how we can support your specific project needs.
1. Product Overview: Programmable Blank LTE USIM 4G Card
A programmable blank LTE USIM is a raw SIM card that allows authorized users to write specific network data directly onto the chip. Unlike standard consumer SIM cards that come with fixed operator profiles, these blank cards give you full control over the personalization process.
Our Programmable Blank LTE USIM 4G Card is compatible with 4G FDD LTE, WCDMA, and GSM networks. It is built for stability, making it an ideal choice for telecom operators, IoT developers, and hardware testing labs.
2. Technical Specifications and 3-in-1 Form Factor
To simplify your inventory and testing setup, we supply this card in a convenient 3-in-1 triple format. You can easily punch out the exact size you need for your device.
Quick Specifications:
- Product Name: LTE Blank USIM Card
- Product Type: Programmable SIM / USIM
- Network Compatibility: 4G FDD LTE, WCDMA, GSM
- Memory Capacity: 128K
- Form Factor: 3-in-1 (Standard / Micro / Nano)
- SIM Slots: 2FF (Mini), 3FF (Micro), 4FF (Nano)
This multi-size design means you only need to stock one SKU to cover older industrial routers (Mini), mid-size terminals (Micro), and modern compact IoT devices or smartphones (Nano).
3. Writable Fields and Pre-installed COS
One of the biggest advantages of our blank LTE USIM is its flexibility in data writing. The card’s Card Operating System (COS) is already installed at the factory, so you do not need to spend time or resources programming the COS yourself. You can directly write the required operator data.
Supported Writable Fields:
- ICCID (Integrated Circuit Card Identifier)
- IMSI (International Mobile Subscriber Identity)
- KI (Authentication Key)
- OPC (Operator Variant Algorithm Configuration Field)
- PIN / PUK (Personal Identification Number / PIN Unlock Key)
- ADM (Administrator Key for file management)
Note: A SIM programming tool is provided upon request to help you manage the writing and verification process.
4. Flexible Supply Options from HKCARD
HKCARD ELECTRONICS CO.,LIMITED is a professional SIM card provider. We understand that different projects have different workflows. Therefore, we offer two main supply options:
Option A: Blank SIM Cards Only
If you have your own personalization equipment and secure data management systems, we can supply the cards completely blank. You handle the data writing in-house.
Option B: Factory Programming Service
If you prefer to receive ready-to-use cards, we can program them for you. Simply provide your authorized SIM card data (ICCID, IMSI, KI, OPC, etc.), and our team will write all the data securely inside the SIM cards before shipping.
5. Ideal Applications for Telecom Operators
These programmable 4G LTE USIM cards are strictly intended for authorized professional use. Common applications include:
- Telecommunications Operators: For network testing, profile validation, and controlled pilot rollouts.
- Device QA and Testing Labs: To test modem stability, network attach times, and RF performance across different network conditions (LTE/3G/2G).
- IoT and M2M Development: For prototyping smart meters, trackers, and industrial gateways before mass production.
- Hardware Manufacturing: For final assembly testing of cellular devices to ensure the SIM slot and antenna perform correctly.
Contact HKCARD ELECTRONICS CO.,LIMITED
Whether you need blank stock or factory-programmed SIM cards, our team is ready to assist with your requirements. Reach out to us for a quote or technical consultation.
📧 Email: byronhan@cardmfg.com
🌐 Website: https://www.cardmfg.com/
📱 WhatsApp / WeChat: +86 158 1737 2512
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