Ever wondered why sourcing the right SIM card supplier feels like searching for a needle in a haystack? With so many factories promising reliability and top-notch quality, it’s easy to feel overwhelmed by choices and confusing claims. Finding the best SIM card manufacturer isn’t just about cost—it’s about securing your business, ensuring seamless connectivity, and keeping customers happy. The right supplier can mean fewer headaches and greater success. Curious to see which factories make the cut?

Read on to discover our top picks and find your perfect match!

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SIM & USIM Card Manufacturing

SIM solutions – Workz

Product Details:
Trasna offers a range of semiconductor SIM, eSIM, and IoT device management solutions for telecoms, IoT, and OEMs, including secure SIM chips (2G/3G/4G/5G/eSIM), system-on-chip (SoC) platforms, SaaS device and SIM management platforms, and SIM card/recharge card manufacturing.

Technical Parameters:
– SIM chips with varying memory sizes: 256K (Java/Native SIM), 380K (4G/3G/2G
– Everest eSIM chip with 900K memory for IoT & telecoms applications.
– Phoenix SoC: NB-IoT System-on-Chip featuring 2MB solution.
– Cerbere SoC: Multi-RF IoT System-on-Chip with 4MB solution.

Application Scenarios:
– Telecom operators requiring secure SIM or eSIM chips for subscriber
– IoT deployments that need embedded SIM or eSIM modules/chips.
– OEMs seeking integrated SIM/SoC solutions for connected devices.
– Lifecycle and device management for large-scale IoT fleets via SaaS platforms.

Pros:
– Broad portfolio covers legacy SIMs, 5G/eSIM, and advanced IoT SoC solutions.
– Large memory capacities on chips for flexible application requirements.
– Cloud SaaS platforms simplify remote SIM/device management.
– Secure manufacturing processes for SIM cards and recharge cards.

Cons:
– Limited technical specifications provided for some products (e.g., protocols,
– No explicit mention of product certifications or compliance standards.
– Not all product features and use cases are detailed on the page.

SIM Card Manufacturing/Production Company Wholesale Supplier | Piotec

Product Details:
Piotec is a wholesale supplier and manufacturer of SIM card manufacturing and issuing solutions. They offer a wide range of machinery for SIM card production, personalization, testing, and issuing, including high-speed SIM card personalization machines, chip initialization and testing equipment, chip module encapsulation machines, and related smart card manufacturing tools.

Technical Parameters:
– High-Speed SIM Card Personalization Machine (PTA-8500A)
– Chip Module Initialization and Testing Machine (PTM-120T)
– Chip Module Encapsulation Machine (PTCME302)
– Smart Card Sorting and Ranking Machine (PTE-S5000)

Application Scenarios:
– Mass-production and personalization of SIM cards for telecommunications
– Testing and quality assurance in SIM card and smart card factories
– Integration in industrial-scale smart card issuance solutions
– Use in production lines for mobile operators and card personalization bureaus

Pros:
– Wide range of products covering the entire SIM card manufacturing process
– High-speed and automated personalization and testing machinery available
– Support for integration with large-scale card production facilities
– Expertise in both hardware manufacturing and process solution design

Cons:
– Technical specifications for individual machines are not detailed on the main
– Potential complexity for small-scale or entry-level manufacturers to implement

Wholesale Prepaid Preloaded Sim Cards|AT&T-Lycamobile – AH Brands

Product Details:
AH Wholesale offers a variety of prepaid SIM cards for use with unlocked phones, catering to international travelers, tourists, and those seeking flexible mobile service without contracts. The SIM cards are available in multiple sizes (standard, micro, nano) and are compatible with GSM phones for nationwide and international calling, text, and data services. Products include pay-as-you-go and unlimited plans from multiple carriers.

Technical Parameters:
– SIM card sizes: Standard, Micro, Nano
– Supports GSM network phones (unlocked devices)
– Plan types: Pay-as-you-go, Unlimited data/talk/text options
– Global and nationwide coverage, depending on carrier

Application Scenarios:
– International travelers needing temporary mobile service in the USA
– Tourists who want to avoid expensive roaming charges
– Users seeking no-contract, prepaid mobile plans
– People needing a backup or secondary phone line

Pros:
– No contracts or credit checks required for purchase
– Wide selection of plans and carriers for flexible choices
– Convenient activation and immediate usage once inserted into a compatible phone
– Multiple SIM card sizes included for different devices

Cons:
– Requires unlocked GSM-compatible phones (may not work with locked or CDMA-only
– Coverage and available features may vary depending on the selected carrier

9 SIM Manufacturers in 2025 – Metoree

Best SIM Card Manufacturers in the World

Product Details:
Major SIM card manufacturers design, fabricate, program, and test SIM cards equipped with smart chips, microprocessors, and essential memory. They store critical subscriber data like KI (Key Identification) and IMSI numbers, and often produce other smart cards for security, banking, and identity applications. These firms supply SIMs as both physical and embedded form factors, and frequently support eSIM and advanced SIM security solutions.

Technical Parameters:
– SIM cards built with integrated circuit (IC) technology including a
– Stores security-critical data such as 128-bit KI key and IMSI number
– Offer both traditional (removable) SIMs and embedded SIMs (eSIMs)
– Manufacturing process similar to other microchips; includes programming of

Application Scenarios:
– Mobile telecommunications (subscriber identity modules for devices)
– Secure banking smart cards (such as debit and credit cards)
– Identity solutions for governments and organizations
– Internet of Things (IoT) device connectivity and integration

Pros:
– Manufacturers are highly specialized and experienced, ensuring wide
– Support for newer technologies like eSIM enables future-proofing and
– High scale of global production meets both consumer and enterprise demand
– Expertise extends to multiple secure smart card applications beyond telecom

Cons:
– Most companies operate in the background, making them unfamiliar and less
– Little publicly detailed differentiation between manufacturers’ technical

Best Sim Card Manufacturer Globally | Cardzgroup

Product Details:
Cardzgroup offers a full range of SIM card solutions including both Native and Java SIM cards, providing either end-to-end solutions or contract manufacturing services, along with SIM personalization and card body manufacturing.

Technical Parameters:
– Supports both Native and Java SIM projects
– Capability for full card personalization
– Can supply SIM modules or use customer-supplied modules

Application Scenarios:
– Telecommunication network operators requiring SIM cards for end users
– Organizations needing personalized SIM cards for employees or specific projects
– SIM module integration for customer-specific applications

Pros:
– World-class manufacturing facility
– End-to-end solution including SIM module, card body, and personalization
– Flexibility of either supplying modules or using customer-supplied modules

Cons:
– No specific technical details (e.g., memory size, supported encryption
– Application scenarios and product certifications are not clearly listed

SIM cards | Card USA, Inc. – Card Manufacturing & Card Technology Experts

Product Details:
The company offers a range of SIM card solutions, including standard, micro, and nano SIM cards, as well as eSIM/vSIM options tailored for mobile network operators, MVNOs, IoT, and M2M applications.

Technical Parameters:
– Form factors: Standard, micro, nano SIM cards, and eSIM/vSIM
– Compliant with GSM, 3G, 4G/LTE, and 5G standards
– Support for over-the-air (OTA) provisioning and remote management
– Available with various memory capacities and security features

Application Scenarios:
– Mobile phone subscriber activation and management
– IoT and M2M device connectivity
– Prepaid and postpaid wireless service deployment
– Mobile Virtual Network Operator (MVNO) solutions

Pros:
– Wide range of SIM formats and customizable solutions
– Support for advanced SIM management including remote provisioning
– Scalable offerings suitable for both consumer and industrial applications
– Integration with multiple network technologies (3G/4G/5G)

Cons:
– May require compatibility verification with specific devices or networks
– Complexity in implementing and managing eSIM/vSIM solutions for some clients

Wholesale Sim Card – Sim Card Manufacturers, Suppliers – EC21

SIM Cards | UICC Supply for Mobile Operators – Oasis Smart-SIM

Comparison Table

Frequently Asked Questions (FAQs)

How do I find reliable SIM card supplier factories or manufacturers?
Start by searching reputable online B2B platforms like Alibaba, Made-in-China, or Global Sources. Check company profiles, years in business, customer reviews, and ask for references. Attending trade shows and industry events is also a great way to meet suppliers in person and verify their legitimacy.

What factors should I consider when choosing a SIM card manufacturer?
Key factors include product quality, certifications (like ISO or CE), production capacity, pricing, lead times, minimum order quantity, ability to customize, and after-sales support. It’s also important to assess their communication skills and willingness to accommodate your needs.

How can I verify the quality of a potential supplier’s SIM cards?
Request product samples and test them for durability, compatibility, and performance. Ask about their quality control procedures, production certifications, and compliance with local or international standards. Third-party audits or inspection services can also help ensure product quality.

What is the typical minimum order quantity (MOQ) for SIM card manufacturers?
MOQs can vary depending on the factory, but they typically range from 1,000 to 10,000 pieces per order. Some suppliers may be flexible, especially if you’re placing a first order or looking for a long-term partnership, so always ask if there’s room for negotiation.

Can suppliers provide customized SIM cards with my branding?
Yes, most SIM card manufacturers offer customization options, such as printing your logo, using unique packaging, or programming specific data profiles. Be sure to communicate your requirements clearly and ask for design proofs and prototypes before finalizing your order.