eSIM Go and CSG empower UK mobile brands with real-time subscriber intelligence

LONDON, UK — May 6, 2026 – eSIM Go today introduced the tech stack behind its UK MVNE platform that gives UK mobile brands real-time visibility of subscriber activity and network performance, while maintaining a low barrier to market entry.

Powered by Tier 1 UK connectivity and enabled by CSG Ascendon, the cloud-native SaaS platform allows brands to launch UK mobile services quickly while retaining direct access to real-time operational data.

Unlike traditional MVNE models built around multiple middleware layers, eSIM Go connects its real-time charging and operational systems directly to network infrastructure. MVNO partners therefore gain direct visibility into subscriber activity and network performance, so they can proactively resolve support queries instead of waiting on provider responses.

By integrating CSG’s real-time rating and charging capabilities directly with the underlying UK network, the platform provides eSIM Go partners with a direct operational path to the network and access to live KPI feeds. This architecture allows partners to monitor subscriber activity, service performance and network behaviour in real time while maintaining full operational control over their services.

Through a digital interface designed for operational teams, partners can manage the entire subscriber lifecycle with continuous visibility of:

• Purchase & Provisioning

Monitoring of digital transactions and eSIM profile creation.

• Installation & Activation

Real-time tracking of device installation and network activation.

• Real-Time Rating & Charging

Immediate visibility into data, voice and SMS consumption.

• Automated Scalability

Streamlined onboarding and offboarding processes that allow MVNOs to scale services without operational bottlenecks.

These capabilities enable partners to launch services quickly while maintaining direct operational control over subscribers and service performance across the UK market.

We built our platform to make it easy for UK MVNOs, removing the barriers to rapid market access and ensuring sustainable, long-term success. But speed is only half the battle. If you don’t have real-time visibility and control over your subscribers, your ability to scale is constrained. By integrating CSG's platform directly into our stack, we’ve removed the middleman and solved the visibility gap. Our partners aren't just selling connectivity, they are managing it with a level of precision that allows them to scale with absolute confidence.

We’re seeing a resurgence in MVNO innovation, as businesses create tailored connectivity services for niche and underserved markets. eSIM Go’s UK MVNE platform is a powerful example of that shift. Using CSG Ascendon, they give MVNOs real-time visibility and control over every eSIM on the Vodafone UK network. By digitising and automating processes that were previously manual and time‑consuming, eSIM Go is making MVNO onboarding faster, easier, and more scalable – and it’s an honour for CSG to support them as they lead the charge in delivering simplified, future-ready solutions for sustainable growth in the UK market.

About eSIM Go

eSIM Go empowers businesses of any size to offer their own digital connectivity solutions to customers, providing everything needed to scale their global opportunity and go to market fast. In the UK, eSIM Go’s MVNE platform is powered by the Vodafone UK network, combining Tier 1 reliability with eSIM Go's proprietary real-time intelligence layer.

Any commercial model can be aligned with eSIM Go's complete eSIM product ecosystem, enabling business partners to embed our capabilities into their product via API, co-brand a fully managed eSIM service or pursue an affiliate route.

Global brands in travel, MNO/MVNO, fintech and more trust eSIM Go to generate revenue and increase customer loyalty through high quality eSIM data bundles based on over 1,200 networks in 190+ countries. For more, see http://www.esimgo.com

About CSG

CSG empowers companies to build unforgettable experiences, making it easier for people and businesses to connect with, use, and pay for the services they value most. Our customer experience, billing, and payments solutions help companies of any size make money and make a difference. With our SaaS solutions, company leaders can take control of their future and tap into guidance along the way from our fiercely committed and forward-thinking CSGers around the world.

Want to be future-ready and a change-maker like the global brands that trust CSG? Visit csgi.com to learn more.

Media contacts

For eSIM Go

David Evans

[email protected]

For CSG

Kristine Østergaard

+44 (0)79 2047 7204

[email protected]