UK Mobile 4G/5G Diagnostics
Which Mobile Network Does My SIM Use? (UK MVNO Checker)
Find out which physical UK mobile network (EE, O2, Vodafone or Three) powers giffgaff, Tesco Mobile, Sky Mobile, VOXI, Lebara, iD Mobile & SMARTY.
EE Mobile
Operational
All United Kingdom (4G/5G Host MNO)
O2 UK
Operational
All United Kingdom (4G/5G Host MNO)
Three UK
Operational
All United Kingdom (4G/5G Host MNO)
Vodafone UK
Operational
All United Kingdom (4G/5G Host MNO)
| Consumer SIM / MVNO Brand | Physical Host MNO | Notes / Status Page |
|---|---|---|
| 1pMobile | EE Mobile | All UK (Runs on EE Network) |
| ASDA Mobile | Vodafone UK | All UK (Runs on Vodafone Network) |
| BT Mobile | EE Mobile | All UK (Runs on EE Network) |
| CMLink UK | EE Mobile | All UK (Runs on EE Network) |
| Ecotalk | EE Mobile | All UK (Runs on EE Network) |
| giffgaff | O2 UK | All UK (Runs on O2 Network) |
| Honest Mobile | Three UK | All UK (Runs on Three UK / Multi-Network Smart SIM) |
| iD Mobile | Three UK | All UK (Runs on Three UK Network) |
| Lebara Mobile UK | Vodafone UK | All UK (Runs on Vodafone Network) |
| Lyca Mobile UK | EE Mobile | All UK (Runs on EE Network) |
| Mozillion | EE Mobile | All UK (Runs on EE Network) |
| Plusnet Mobile | EE Mobile | All UK (EE Network Transition) |
| Sky Mobile | O2 UK | All UK (Runs on O2 Network) |
| SMARTY | Three UK | All UK (Runs on Three UK Network) |
| Spusu UK | EE Mobile | All UK (Runs on EE Network) |
| Superdrug Mobile | Three UK | All UK (Runs on Three UK Network) |
| Talkmobile | Vodafone UK | All UK (Runs on Vodafone Network) |
| Tesco Mobile | O2 UK | All UK (Runs on O2 Network) |
| Utility Warehouse Mobile | EE Mobile | All UK (Runs on EE Network) |
| Virgin Mobile UK | O2 UK | All UK (Migrated to O2 UK Network) |
| VOXI | Vodafone UK | All UK (Runs on Vodafone Network) |
| Your Co-op Mobile | EE Mobile | All UK (Runs on EE Network) |
Why Knowing Your Host MNO Solves UK Mobile Outages Faster
When a local 4G/5G radio mast goes dark due to an Openreach fibre backhaul cut or planned works, every consumer SIM riding on that host operator drops simultaneously. Checking your underlying physical host network (EE, O2, Vodafone or Three) immediately clarifies whether a blackout stems from radio infrastructure rather than your phone handset.
Remember: All powered UK mobile phones automatically route 999 and 112 emergency voice calls onto any rival functioning UK mast regardless of your SIM brand.