Top 10: Roaming Service Providers

The landscape of international roaming has undergone a radical transformation, becoming a critical utility for both consumers and IoT ecosystems.

One of the biggest challenges for the modern telco executive can be navigating the intricacies of VoLTE roaming and the commercial viability of 5G Standalone (5G SA) steering.

The providers featured in this list represent the vanguard of wholesale roaming, harnessing massive scale and sophisticated clearing house capabilities to maintain Quality of Service (QoS) across fragmented territories.

From the aggressive expansion of travel eSIM technology to the orchestration of massive-scale IoT roaming, these ten players define the technical and commercial benchmarks of the industry.

Telco Magazine evaluates the key innovators driving the roaming sector forward through strategic partnerships and robust network infrastructure.

10. 1GLOBAL

CEO: Hakan Koç
Founded: 2022
Location: Amsterdam, Netherlands

As a relatively new disruptor, 1GLOBAL has rapidly ascended the ranks by focusing on the burgeoning eSIM market.

Formerly known as Truphone’s enterprise and consumer arm, the company provides a sophisticated global API that integrates roaming directly into third-party apps.

Their focus on digital-first connectivity and a privately owned global core network allows them to bypass traditional legacy hurdles, offering high-speed data across 160 countries.

They are currently a preferred partner for major financial institutions and travel platforms.

9. Singtel

CEO: Yuen Kuan Moon
Founded: 1879
Location: Singapore

Singtel is a dominant force in the Asia-Pacific region, commanding an impressive footprint through its regional associates.

Their roaming prowess is underpinned by the Bridge Alliance, which covers more than 30 countries and hundreds of millions of subscribers.

Singtel is a pioneer in 5G roaming, having established early cross-border corridors that ensure low-latency performance for business travellers and automated logistics.

Their commitment to seamless regional integration makes them a vital link between Eastern and Western mobile ecosystems.

8. NTT Docomo

CEO: Katsushige Kojima
Founded: 1992
Location: Tokyo, Japan

Japan’s leading carrier is synonymous with technical excellence. NTT Docomo has been a steady leader in testing and implementing international 5G roaming protocols.

By focusing on high-bandwidth applications and rigorous QoS standards, they ensure that their outbound roamers experience domestic-level performance.

Their extensive bilateral roaming agreements cover nearly every corner of the globe, while their investment in Open RAN technologies is beginning to influence how international roaming handovers are managed at the edge of the network.

7. Verizon

CEO: Dan Schulman
Founded: 2000
Location: Avenue of the Americas, New York, US

Verizon’s roaming strategy is defined by the sheer scale of its North American subscriber base and its TravelPass consumer positioning.

On the wholesale side, Verizon provides one of the most stable roaming environments for international visitors to the US.

Their massive investment in C-Band and mmWave technology ensures that inbound roamers benefit from high-capacity 5G.

They have also been instrumental in developing robust roaming solutions for the automotive industry, supporting connected vehicles across global markets.

6. Telefónica

CEO: Marc Murtra Millar
Founded: 1924
Location: Madrid, Spain

With a powerful presence in Europe and Latin America, Telefónica harnesses its "Global Solutions" unit to provide a unified roaming experience across its diverse markets.

They are particularly adept at managing the complex regulatory and technical requirements of the Latin American market while maintaining a lead in the EU’s "Roam Like At Home" environment.

Their focus on big data analytics helps them optimise steering of roaming, ensuring cost-effective connectivity without compromising the user experience or network signalling efficiency.

5. AT&T

CEO: John Stankey
Founded: 1885
Location: Dallas, Texas, US

AT&T boasts one of the world’s largest footprints for international roaming, particularly through its extensive IoT-focused partnerships.

Their Global SIM solutions are the gold standard for enterprises requiring cross-border connectivity for fleet management and industrial sensors.

By maintaining high-tier roaming agreements in more than 200 countries, AT&T ensures that its customers stay connected on the most reliable local networks.

Their ongoing transition to 5G roaming ensures they remain a top-tier choice for high-value corporate accounts and multi-national organisations.

4. China Mobile

CEO: Appointment Pending
Founded: 1997
Location: Xicheng District, Beijing

As the world’s largest mobile operator by subscriber count, China Mobile’s roaming influence is staggering.

Through their international subsidiary, CMI, they have built a formidable global infrastructure including subsea cables and PoPs.

This allows them to offer highly competitive wholesale roaming rates and exceptional data throughput.

Their Hand in Hand Program (HIH) fosters collaboration between global carriers, facilitating better roaming quality and faster 5G adoption.

They are an essential partner for any carrier looking to access the Asian market.

3. Orange Group

CEO: Christel Heydemann
Founded: 1994
Location: Paris, France

Orange is a titan of the European and African roaming landscapes.

Through Orange Wholesale, they provide comprehensive roaming services to hundreds of partners worldwide.

Their "Roaming Hub" is a critical piece of industry infrastructure, allowing smaller MNOs and MVNOs to access global networks through a single connection.

Orange has been a vocal leader in the development of 5G SA roaming, focusing on the technical requirements for "Slicing" which will allow for differentiated roaming services for industrial and consumer users.

2. Deutsche Telekom

CEO: Timotheus Höttges
Founded: 1995
Location: Bonn, Germany

Deutsche Telekom, operating primarily as T-Mobile, is a powerhouse of international connectivity that has successfully bridged the gap between terrestrial and non-terrestrial networks.

Their "Magenta" branding is backed by a sophisticated global backbone and the pioneering T-Satellite service.

Launched in partnership with SpaceX, T-Satellite provides direct-to-cell connectivity via Starlink, allowing standard 5G smartphones to roam into satellite coverage in traditional dead zones.

This innovation, combined with high-speed 5G SA roaming across Europe and North America, ensures they remain a dominant force in the global roaming market.

1. Vodafone Group

CEO: Margherita Della Valle
Founded: 1984
Location: Newbury, Berkshire

Vodafone Group is the primary benchmark for global roaming, underpinned by a sophisticated infrastructure that serves over 700 million customers across managed and partner markets.

Their dedicated business unit, Vodafone Roaming Services (VRS), centralises wholesale operations to deliver consistent 5G SA and IoT connectivity across a footprint that few can match.

The group’s focus has shifted towards high-capacity industrial roaming and the commercial roll-out of direct-to-device satellite services through their strategic partnership with AST SpaceMobile.

By combining massive wholesale scale with rigorous technical standardisation, Vodafone continues to lead the sector in both geographic reach and service reliability.