Multi-network coverage
iD is a Three MVNO bought by Currys/Carphone Warehouse. Coverage is whatever Three gives you in your area. Fuse uses all four UK networks — when Three drops out, you stay connected on EE, O2 or Vodafone.
Compare · vs iD Mobile
Fuse vs iD Mobile
iD Mobile is the Three-powered MVNO from Currys/Carphone Warehouse, known for cheap plans and data rollover. Fuse matches the value but adds three more networks — your data still rolls, your signal works in more places.
4.8·based on 2,143 reviews
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Ofcom-verified coverage data
| Feature | Fuse | iD Mobile |
|---|---|---|
| Network | All 4 UK networks | Three only |
| eSIM support | Selected plans only | |
| Starting price | From £5.99/mo | From £5/mo |
| Contracts | No contracts | 1 / 12 / 24 month |
| International roaming | 130+ countries | EU + 50 destinations |
| 5G | ||
| Multi-network switching | ||
| Data rollover | Plans cover what you use | Yes |
Network
FuseAll 4 UK networks
iD MobileThree only
eSIM support
Fuse
iD MobileSelected plans only
Starting price
FuseFrom £5.99/mo
iD MobileFrom £5/mo
Contracts
FuseNo contracts
iD Mobile1 / 12 / 24 month
International roaming
Fuse130+ countries
iD MobileEU + 50 destinations
5G
Fuse
iD Mobile
Multi-network switching
Fuse
iD Mobile
Data rollover
FusePlans cover what you use
iD MobileYes
Why Fuse
What you get with Fuse that you don't with iD Mobile.
eSIM-first activation
iD still defaults to physical SIM cards on most plans, with eSIM available only on selected newer contracts. Fuse is eSIM-first — order, scan a QR, connected in minutes.
Roaming where you actually travel
iD roams in the EU plus around 50 extra destinations. Fuse includes data in 130+ countries on Pulse and Surge — no surprise fees in Japan, the US, or anywhere else outside iD's list.
No exit fees, ever
iD contracts are 12 or 24 months — there are exit fees if you leave early. Fuse is rolling monthly: stay as long as it works, leave any time, no penalty.
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