Multi-network coverage
SMARTY runs on Three alone, which has known gaps in rural areas and indoors. Fuse connects to all four UK networks — when Three drops, you don't.
Compare · vs SMARTY
Fuse vs SMARTY
SMARTY offers good value on the Three network with simple, no-contract plans. Fuse offers four networks at a similar price — when Three drops, you don't. Better coverage, worldwide roaming, same contract-free flexibility.
4.8·based on 2,143 reviews
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Ofcom-verified coverage data
| Feature | Fuse | SMARTY |
|---|---|---|
| Network | All 4 UK networks | Three only |
| eSIM support | ||
| Starting price | From £5.99/mo | From £6/mo |
| No contracts | ||
| International roaming | 130+ countries | EU only |
| 5G | ||
| Multi-network switching | ||
| Coverage | 99%+ combined | Three coverage only |
Network
FuseAll 4 UK networks
SMARTYThree only
eSIM support
Fuse
SMARTY
Starting price
FuseFrom £5.99/mo
SMARTYFrom £6/mo
No contracts
Fuse
SMARTY
International roaming
Fuse130+ countries
SMARTYEU only
5G
Fuse
SMARTY
Multi-network switching
Fuse
SMARTY
Coverage
Fuse99%+ combined
SMARTYThree coverage only
Why Fuse
What you get with Fuse that you don't with SMARTY.
Global roaming
Fuse includes roaming in 130+ countries worldwide. SMARTY limits roaming to the EU — travel further and you need an alternative.
Better rural coverage
Three's network is strong in cities but can struggle in the countryside. Fuse combines four networks for 99%+ UK coverage.
Similar pricing, more networks
SMARTY from £6/mo, Fuse from £5.99 — virtually the same. But Fuse gives you four networks instead of one. More coverage, same money.
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