Multi-network advantage
giffgaff runs exclusively on O2, so your coverage depends entirely on one network. Fuse connects to all four UK networks — EE, Three, Vodafone and O2 — so your device picks the strongest signal automatically.
Compare · vs giffgaff
Fuse vs giffgaff
giffgaff is a popular community-driven provider on the O2 network. Fuse gives you all four UK networks through one eSIM — better coverage, lower prices, and worldwide roaming. While giffgaff still relies on physical SIM cards, Fuse activates instantly via eSIM.
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Ofcom-verified coverage data
| Feature | Fuse | giffgaff |
|---|---|---|
| Network | All 4 UK networks | O2 only |
| eSIM support | ||
| Starting price | From £5.99/mo | From £10/mo |
| No contracts | ||
| International roaming | 130+ countries | EU + selected |
| 5G | ||
| Multi-network switching | ||
| Coverage | 99%+ combined | O2 coverage only |
Network
FuseAll 4 UK networks
giffgaffO2 only
eSIM support
Fuse
giffgaff
Starting price
FuseFrom £5.99/mo
giffgaffFrom £10/mo
No contracts
Fuse
giffgaff
International roaming
Fuse130+ countries
giffgaffEU + selected
5G
Fuse
giffgaff
Multi-network switching
Fuse
giffgaff
Coverage
Fuse99%+ combined
giffgaffO2 coverage only
Why Fuse
What you get with Fuse that you don't with giffgaff.
eSIM technology
giffgaff still posts physical SIM cards. Fuse uses eSIM, so you can activate your plan instantly — no waiting, no SIM-tray fiddling. Scan and go.
Global roaming
Fuse gives you data in 130+ countries. giffgaff limits roaming to the EU and a handful of destinations, which can leave you without affordable data on longer trips.
Better value
Fuse plans start at £5.99/mo — lower than giffgaff's £10 starting price — and you get four networks instead of one. More coverage, lower cost.
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