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Fuse Mobile is a multi-network eSIM provider that gives you access to all four major UK networks (EE, Three, Vodafone, and O2) through a single eSIM. Your phone automatically connects to the strongest signal available, so you always get the best coverage.

Unlike traditional providers that lock you to one network, Fuse uses all four UK networks. This means better coverage, fewer dead spots, and a more reliable connection wherever you are. It's like having four networks for the price of one.

No, you can keep your existing phone number. When you sign up, we'll help you transfer your number over to Fuse. The process usually takes just a few hours.

Fuse connects to all four major UK mobile networks: EE, Three, Vodafone, and O2. Your phone automatically selects the strongest signal available at your location.

No. Unlike some backup SIM providers that restrict data to 500 apps, Fuse provides full, unrestricted data access. Every app, every service, every website — no limitations.

An eSIM (embedded SIM) is a digital SIM built into your phone. Instead of a physical SIM card, your phone's connectivity is activated digitally. This means no waiting for a SIM card in the post — you can be connected in minutes.

Most modern smartphones support eSIM, including iPhone XS and later, Samsung Galaxy S20 and later, Google Pixel 3 and later, and many more. Check our device compatibility tool on the How It Works page to confirm your device.

Yes! Most eSIM-compatible phones support dual SIM — one physical and one eSIM. You can use your Fuse eSIM for data alongside your existing physical SIM for calls, or use Fuse for everything.

After signing up, we'll send you a QR code. Simply scan it with your phone's camera, follow the on-screen instructions, and you'll be connected in under 5 minutes. No technical knowledge required.

Many modern phones support multiple eSIM profiles. You can have your Fuse eSIM alongside another eSIM or a physical SIM. Check your phone settings to see how many eSIM profiles your device supports.

Fuse is a monthly subscription. You pay at the start of each billing cycle and can cancel anytime. There are no long-term contracts or hidden fees.

Yes, you can upgrade or downgrade your plan at any time from your account dashboard. Changes take effect at the start of your next billing cycle, and we'll prorate any differences.

We accept all major credit and debit cards (Visa, Mastercard, Amex) through our secure payment partner Adyen. All payments are processed securely with 3D Secure authentication.

No contracts, no commitments. Fuse is a rolling monthly subscription. You can cancel anytime, and your service will continue until the end of your current billing period.

No. The price you see is the price you pay. There are no activation fees, no admin charges, no cancellation fees, and no minimum contract. Fuse believes in transparent, straightforward pricing.

Yes! Fuse works in over 130 countries worldwide. Plans with roaming included let you use your data allowance abroad at no extra cost. Check our Roaming page for the full list of supported countries.

If your plan includes roaming, there's no extra charge — you simply use your existing data allowance abroad. Plans without roaming included can add it as an option from their account dashboard.

There's nothing to activate. If your plan includes roaming, simply travel abroad and your eSIM will automatically connect to a local partner network. Make sure data roaming is enabled in your phone's settings.

Fuse supports roaming in over 130 countries across Europe, the Americas, Asia Pacific, the Middle East, and Africa. Visit our Roaming page for the complete list of supported destinations.

You can check your data usage at any time from the Fuse app or your online account dashboard. We also send notifications when you reach 80% and 100% of your allowance.

When you use all your data allowance, your data connection will be paused until your next billing cycle. You can upgrade your plan at any time to get more data immediately.

You can upgrade to a higher plan at any time, which takes effect immediately. We'll prorate the difference so you only pay for the remaining days in your billing cycle.

No. Fuse does not throttle your connection speed. You get the full speed available from whichever network you're connected to. Speeds vary by location and network conditions.

You can check your current network connection in the Fuse app. The app shows which of the four UK networks your phone is currently using, along with signal strength and connection type.

You can manage your account through the Fuse app or by logging in at fusemobile.co.uk. From there you can view usage, change plans, update payment details, and more.

You can cancel anytime from your account dashboard. Your service will continue until the end of your current billing period. There are no cancellation fees or penalties.

Go to your account dashboard and select "Payment Methods" to add, remove, or change your default payment card. All payments are processed securely through Adyen.

Yes. If you get a new phone, you can transfer your Fuse eSIM. Log in to your account, go to eSIM settings, and follow the transfer process. You'll receive a new QR code to scan on your new device.

Yes. eSIM technology uses the same encryption standards as physical SIM cards, with added security benefits. Your eSIM profile is encrypted and tied to your device, making it harder to clone or steal than a physical SIM.

If your phone is lost or stolen, contact us immediately and we can deactivate your eSIM remotely. Because eSIMs are embedded in the device, they cannot be physically removed and used in another phone without your credentials.

We take data protection seriously. Your personal information is encrypted and stored securely in compliance with UK GDPR. We never sell your data to third parties. See our Privacy Policy for full details.

Switching is simple. Text PAC to 65075 from your current phone to get your PAC code. Then sign up with Fuse and provide your PAC code during the process. Your number will transfer within one working day.

There may be a brief interruption of a few minutes when your number transfers to Fuse. This typically happens during the morning of the transfer day. After that, you will be fully connected to all four UK networks.

Yes. If your phone supports dual SIM, you can add Fuse as a secondary eSIM alongside your existing SIM card. This lets you try Fuse without cancelling your current plan.

Most phones from 2018 onwards support eSIM, including iPhone XS and later, Samsung Galaxy S20 and later, and Google Pixel 3 and later. Check our device compatibility list on the How It Works page for the full list.

Yes, Fuse works on eSIM-compatible tablets including iPad Pro (2018 and later), iPad Air (3rd generation and later), and iPad Mini (5th generation and later). A data-only plan is ideal for tablet use.

Yes. If you upgrade to a new phone, log in to your Fuse account and follow the eSIM transfer process. We will generate a new QR code for your new device. Your plan and number stay the same.