Every key feature compared side by side. Features only — no prices.
Ask Our Team →| Feature | O2 | Three | Sky Mobile |
|---|---|---|---|
| Network type | MNO | MNO | MVNO on O2 |
| Parent company | Virgin Media O2 | VodafoneThree (merged May 2025) | Sky UK (Comcast) |
| 4G coverage | 99% population | 99% population | 99% via O2 |
| 5G coverage | ~70% population | ~62% (fastest speeds) | ~70% via O2 |
| EU roaming | Free on all plans (25GB) | Value/Complete tiers only | Varies by plan |
| Data rollover | Yes — next month | No standard rollover | Piggybank — up to 3 years |
| eSIM support | Yes — all devices | Yes — incl. PAYG eSIM | Yes — via Sky app |
| Annual price rise | Fixed £2.50/mo (April) | Fixed £1.80-1.90/mo (April) | RPI-linked, 30-day exit right |
| Loyalty/rewards | O2 Priority (events, offers) | Three+ perks | Swap12 upgrade scheme |
| Best for EU travel | Best — free all plans | Yes, on correct tier | Check per plan |
| Best for 5G speed | Good — 5G Standalone | Best — 140MHz spectrum | Good via O2 |
| Best for bundles | Good standalone value | Good standalone value | Sky TV/Broadband bundles |
You travel to Europe regularly and want roaming included as standard on every plan. You attend live events and value O2 Priority early ticket access. You want data rollover and a transparent Refresh contract model.
You are a heavy data user wanting the best-priced unlimited plan. You want the fastest 5G speeds. You want a 30-day rolling plan that is exempt from annual price rises.
You already pay for Sky TV or Sky Broadband and want bundle savings. Your data usage varies significantly month to month. You want to upgrade your phone every 12 months via Swap12.
Still unsure? A 2-minute call is usually enough to narrow it down — we ask about your postcode, data habits and travel plans, then give you a clear shortlist.
📞 03300597117Our independent team can help you compare O2, Three and Sky Mobile in a 2-minute call — free, no sales pressure.