U Mobile, Malaysia’s first telco to deliver network-level scam protection, successfully blocks over 265 million attempts with Cellusys Kuala Lumpur,... View Article
Dublin, Ireland – 17 December 2025 – Cellusys, a global specialist in telecom signalling security, has contributed to a major... View Article
Dublin, Ireland – 26 November 2025 – Cellusys has been recognised as a Champion Vendor in both Signalling Security and... View Article
Dublin, Ireland – 19 November 2025 – Cellusys has been ranked the #1 vendor for Steering of Roaming (SoR) for the... View Article
Cellusys Steering of Roaming (SoR) service, empowers Simba to automatically respond to network dynamics and gain visibility and control over... View Article
Drei Austria, a leading mobile operator, and Cellusys, the #1 provider of roaming and mobile security solutions, have achieved a... View Article
Stockholm, October 14, 2025 — Arelion today announced a partnership with Cellusys, the industry leader in roaming steering, fraud and... View Article
What are travel eSIMs? A travel eSIM allows international travellers to buy data connectivity from alternative roaming providers instead of... View Article
About 25 years ago in Telecom an exciting and yet intimidating new suite of protocols was gaining momentum called SIGTRAN.... View Article
Travel eSIMs are rapidly capturing roaming traffic — and revenue — from MNOs. Without fast action, operators risk losing control... View Article
Cellusys to Support Ribbon DSC, STP, DRA, and SP2000 Products We are pleased to share an important update for mobile... View Article
We’ve spoken before about how automation can improve roaming quality. But there’s another important angle that deserves a closer look:... View Article
When 3GPP introduced the Steering of Roaming (SoR) function for 5G standalone (SA) networks in specification 29.550, it represented a... View Article
In a world where connectivity is the foundation of modern infrastructure, security and resilience are non-negotiable. Nowhere is this more... View Article
We’ve wrapped up another MWC, and it’s been a great week of meeting interesting people, exploring new innovations, and observing... View Article
On Day 3, we shifted our focus to eSIMs and MVNOs, two areas experiencing significant growth.
Open Gateway and APIs were a key focus today, but the conversation often felt more about potential than practical implementation.... View Article
AI dominated Day 1, but is it real innovation or just another buzzword? 5G was also in focus, though discussions... View Article
From March 3rd to 6th, 2025, the world’s largest and most influential connectivity event, Mobile World Congress (MWC), returns to... View Article
With a team of 24 at MWC, we’ll be bringing you the insights that matter. Each morning, we’ll break down... View Article