Every UK SIM locks you to one network — and every network has dead zones. Fuse is a data-only eSIM that connects to all four (EE, Three, Vodafone, O₂) at once and auto-switches to whichever has the strongest signal where you are — invisibly, same number, no second app, no contract. Setup is a 90-second QR scan. From £5.99/mo with a 7-day free trial, so you can test it in your own dead zones before paying.
