All 4 UK networks vs one
Fuse data uses all four UK networks (EE, Vodafone, Three, O2) automatically. BT Mobile runs on EE only — your coverage depends entirely on EE wherever you are.
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Fuse vs BT Mobile
Fuse Mobile and BT Mobile are both eSIM options in the UK. BT Mobile relaunched in May 2026 as a consumer brand for BT Broadband customers — it runs on EE's network and requires a BT Broadband subscription. Fuse is a UK multi-network data-only eSIM that uses all four UK networks and works on its own. Here's the comparison — all BT Mobile facts verified from bt.com/mobile on 4 June 2026.
| Feature | Fuse | BT Mobile |
|---|---|---|
| Product | UK multi-network data-only eSIM | UK mobile service for BT Broadband customers (uses EE network) |
| UK networks | All 4 (EE, Vodafone, Three, O2) | EE only |
| Multi-network switching | ||
| Data — apps you can use | Any app, any service. Standard unrestricted data. | Any app, any service. Standard unrestricted data. |
| Banking, social, streaming, VPN, gaming | ||
| Starting price | From £5.99/mo for 5GB | From £9/mo intro / £11/mo standard (10GB, 30-day rolling) |
| International roaming | 130+ countries on Pulse and Surge | Roam Like Home: 30 European + 16 destinations, 15GB fair use |
| eSIM | Not mentioned on consumer page | |
| Contract | Monthly rolling, cancel any time. No broadband required. | 30-day rolling. BT Broadband subscription required. |
Product
FuseUK multi-network data-only eSIM
BT MobileUK mobile service for BT Broadband customers (uses EE network)
UK networks
FuseAll 4 (EE, Vodafone, Three, O2)
BT MobileEE only
Multi-network switching
Fuse
BT Mobile
Data — apps you can use
FuseAny app, any service. Standard unrestricted data.
BT MobileAny app, any service. Standard unrestricted data.
Banking, social, streaming, VPN, gaming
Fuse
BT Mobile
Starting price
FuseFrom £5.99/mo for 5GB
BT MobileFrom £9/mo intro / £11/mo standard (10GB, 30-day rolling)
International roaming
Fuse130+ countries on Pulse and Surge
BT MobileRoam Like Home: 30 European + 16 destinations, 15GB fair use
eSIM
Fuse
BT MobileNot mentioned on consumer page
Contract
FuseMonthly rolling, cancel any time. No broadband required.
BT Mobile30-day rolling. BT Broadband subscription required.
BT Mobile data in the table above was verified from BT Mobile's own published pages on 4 June 2026. Pricing and promotional terms change frequently — please re-check BT Mobile's website for current details before deciding.
Sources: BT Mobile (consumer page)·Roam Like Home·Roaming costs and charges
Why Fuse
What Fuse offers.
Strongest signal wins
Fuse scans all four networks continuously and moves to whichever is strongest in under a second. BT stays on EE — if EE is weak in your area, your data stays weak.
No broadband bundle required
Fuse is mobile-only. BT Mobile is, per their own consumer page, exclusively for BT Broadband customers — you must subscribe to BT Broadband to subscribe to BT Mobile.
Wider roaming reach
Fuse Pulse and Surge plans include data in 130+ countries. BT Mobile's Roam Like Home covers 30 European + 16 additional destinations.
BT Mobile's consumer page does not advertise an eSIM, and BT Mobile requires a BT Broadband subscription and runs on EE only. If you want a standalone eSIM that works on its own — no broadband bundle, no single-network lock-in — Fuse is the closest alternative: a UK multi-network data-only eSIM that uses all four UK networks (EE, Three, Vodafone, O2) and auto-switches to the strongest signal. It installs by scanning a QR code on any eSIM-capable phone.
Fuse is a data-only eSIM that uses all four UK networks and needs no broadband subscription. BT Mobile runs on EE only and, per its consumer page, requires BT Broadband. Most people keep their current number for calls/SMS and add Fuse alongside via dual-SIM for data.
Yes. Any eSIM-capable phone (most flagships from 2018 onwards) supports dual-SIM — keep BT Mobile for calls and SMS and install Fuse as a second eSIM for data. Both work at the same time.
No — Fuse is rolling monthly. Cancel or change plan any month with no exit fees. Plans start at £5.99/month for Spark (5GB), £9.99 for Pulse (10GB + roaming in 130+ countries), and £14.99 for Surge (15GB + roaming).
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