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Fuse
Guides

Step-by-step
on every phone.

In-depth guides for setup, switching, troubleshooting and getting the most out of multi-network eSIM.

Troubleshooting

eSIM Not Activating? Fix Common Issues

eSIM not activating in the UK? Fix 'activation failed', No Service, greyed-out settings and APN errors on iPhone, Samsung Galaxy and Google Pixel.

8 min readRead guide

Setup

Transfer Your Number to an eSIM UK

You won't lose your number switching to an eSIM. Learn how to transfer via PAC code or in-app — covering same-network, new provider, and dual SIM paths.

7 min readRead guide

Technology

eSIM Compatible Phones UK: 2026 List

Find out which phones support eSIM in the UK in 2026 — with a full list by brand, a quick compatibility checker, and guidance on carrier-locked devices.

8 min readRead guide

Setup

eSIM Setup on Samsung Galaxy S25

Step-by-step guide to activating an eSIM on the Samsung Galaxy S25, S25+, S25 Edge, and S25 Ultra — including troubleshooting and the best UK eSIM plan.

7 min readRead guide

Setup

eSIM Setup on Google Pixel 9: UK Guide

Set up a Fuse eSIM on your Google Pixel 9 in under five minutes — step-by-step guide covering QR code scanning, manual codes, dual SIM, and troubleshooting.

8 min readRead guide

Setup

How to Activate an eSIM in the UK

Activate an eSIM in the UK in minutes — step-by-step instructions for iPhone, Samsung Galaxy, and Google Pixel, plus troubleshooting tips.

7 min readRead guide

Technology

Multi-Network eSIM UK: How It Works

A multi-network eSIM connects to all four UK networks automatically. Here's how it works, why it beats a standard SIM, and how Fuse compares to alternatives.

7 min readRead guide

Setup

iPhone 16 eSIM Setup Guide

Complete step-by-step guide for setting up eSIM on iPhone 16, including QR code activation, dual SIM configuration, and troubleshooting tips.

8 min readRead guide

Technology

What is an eSIM? Everything You Need to Know

eSIM technology is changing how we connect our phones. Here's what an eSIM is, how it works, which devices support it, and why it matters.

4 min readRead guide

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