Independent guidance: This page is not operated by O2 or its parent company. For official account matters, contact O2 directly through their own channels.
O2 is one of the UK's largest networks, notable for keeping EU roaming completely free across its standard plans, and for launching the UK's first satellite mobile coverage layer in 2026.
Plans
SIM only, pay monthly, and PAYG options.
- SIM only on 30-day rolling or 12-month terms
- O2 Refresh splits handset and airtime costs separately on pay monthly
- PAYG needs no credit check and no fixed contract
Coverage & 5G
Independent test results, not marketing claims.
- 5G+ Standalone expanding via a major 2026 investment programme
- Satellite coverage extends effective landmass coverage from 89% to 95%
- Online coverage checker available to confirm signal at your postcode
Roaming
The only major UK network with fully free EU roaming.
- Free EU roaming on every standard plan, 49+ destinations
- Fair-use data cap applies each month while roaming
- O2 Plus and Ultimate tiers extend further worldwide
Switching
Standard Ofcom-protected process.
- Text PAC to 65075 to keep your number when leaving
- Text STAC to 75075 to leave without porting
- Text INFO to 85075 to check your contract first
Independent guidance notice: Onuhiowise (onuhiowise.online) is an independent information and guidance website covering all major UK mobile networks equally — Three, O2, EE, Tesco Mobile, Vodafone, Sky Mobile, and iD Mobile. We are not any of these companies, not a reseller, not an agent, and not an authorised partner of any of them. We do not sell SIM cards, contracts, or airtime, and we do not display or quote pricing anywhere on this site. If you contact us by phone or form, you are reaching Onuhiowise's own independent guidance team — never a network's official customer service line. Our team will always introduce themselves as Onuhiowise, an independent service, and will never claim or imply that we are O2, Three, EE, Tesco Mobile, Vodafone, Sky Mobile, iD Mobile, or any other network. Network names and colours used on this site are trademarks of their respective owners, used only so you know which network a page is about — this does not imply any partnership or endorsement. Always confirm final pricing, contract terms, and account-specific matters directly with your network.