Building a future-ready mobile network in Jersey

We're investing in Jersey's mobile network to make everyday connections easier and more dependable. This work includes introducing 5G alongside our existing technologies, improving coverage and capacity across the island, and creating a platform that can support the latest digital services.

Preparing for the new network

As part of this major infrastructure project, engineers are carrying out planned works across the island to lay the foundation for the upgraded network. This includes:

Replacing old masts and infrastructure with new technology
Installing equipment to introduce 5G alongside existing mobile technologies
Improving coverage and capacity across the island

When complete, the upgraded network will make everyday connections smoother and more reliable, supporting modern usage and growing digital demand.

3G network switch-off – what you need to know

As part of the network upgrade, from August onwards 3G will be switched off. For most customers, your service will continue as normal. The majority of phones and devices already support 4G, so calls, texts and mobile data will keep working.

Some customers may need to update their device settings or upgrade their device to stay connected to the internet.

We're here to support you every step of the way. Here's everything you need to know to stay connected.

What to expect

Most of the work happens quietly in the background. In areas where upgrades are underway, there may be temporary reductions in coverage or service.

We'll keep this page updated with the latest on the works and where they're happening, so you can check progress and any changes in your area.

If you need help with your device or service, our team is available in-store or over the phone to offer support and answer any questions.

Thank you for your patience while these important upgrades are completed. This work is laying the foundation for a future-ready network that will support the island’s digital needs for years to come.

Mobile site works and affected areas

The map below shows where upgrade works are taking place across Guernsey. We'll keep this updated as progress continues and share updates with our customers along the way.