April 30, 2025

Travel SIMs Are Eroding Roaming Revenues: How MNOs Can Respond

TravelSIMs are rapidly capturing roaming traffic — and revenue — from MNOs. Without fast action, operators risk losing control of both outbound and inbound roamers. Here’s how to protect your business and turn the tide.


Outbound: Keep Your Subscribers Roaming on Your Network

The Problem:
Subscribers are switching to TravelSIMs when they travel, fearing high costs and bill shock. Most are unaware of your affordable roaming offers — and they’re being lost to competitors.

The Solution:

  • Communicate clearly and proactively.
    Don’t wait for subscribers to search for roaming bundles — tell them upfront, at the right moment.
  • Remove all friction.
    Auto-activate bundles on arrival where possible, or make activation seamless and unavoidable.
  • Control the competition.
    Launch your own TravelSIM or partner with TravelSIM providers to keep customer spend inside your ecosystem.
  • Maximise preferred roaming deals.
    Precision steering is essential to retain value.


Cellusys Steering of Roaming solutions achieve near-100% accuracy — securing outbound traffic and revenue.


Inbound: Detect and Monetise TravelSIM Traffic

The Problem:
Inbound TravelSIMs are bypassing traditional roaming agreements, costing you revenue and undermining established partnerships.

The Solution:

  • Detect inbound TravelSIMs in real time.
    Gain clear visibility over who is entering your network — and act.
  • Refine your commercial strategy.
    Identify high-value inbound roamers and adjust your offers and policies to capture new revenue streams.
  • Expand your footprint.
    Attract roamers through your own offers or TravelSIM partnerships — turning bypass into business.

Cellusys Roam Insight analytics platform enables live TravelSIM detection alongside silent roamer and IoT analytics — empowering you to optimise and monetise inbound traffic.


Why TravelSIMs Exist — and Why MNOs Still Hold the Advantage

TravelSIMs thrive on a simple perception: that roaming is too expensive.
Not better quality. Not easier connectivity. Just fear of high costs.

In reality:

  • Roaming already matches TravelSIMs in network quality.
  • Home IPs and security are advantages that TravelSIMs cannot match.
  • Competitive roaming offers often exist — customers simply don’t know about them.

MNOs own this gap — but can still close it, fast.

Those who communicate clearly, offer seamless roaming experiences, and detect TravelSIMs proactively will not only protect revenue — they’ll grow it.



With the #1 Steering of Roaming, Roam Insight analytics, and signalling security solutions,
Cellusys helps operators secure their outbound and inbound roaming revenues in this changing market.

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April 30, 2025