O2 · Runs on O2O2 deals and facts
O2 runs its own network. O2 adds £2.50 a month every April on plans taken out since 23 October 2025. Device plans for the phone itself are frozen. O2 runs a hard credit check on pay monthly plans. There’s no credit check on pay as you go. The cheapest O2 SIM only deal today is £7.00 a month for 10 GB on a 30-day plan.
Facts checked: 24 October 2026 · Page updated: · Prices update daily
At a glance
O2 owns and runs its masts.
Checked 24 Oct 2026Mid-contract price rise on new plans.
Checked 24 Oct 2026O2 runs a hard credit check on pay monthly plans. There’s no credit check on pay as you go.
Checked 24 Oct 2026Cheapest O2 SIM only plan today: 10 GB, 30-day.
Source: live deals feedLive O2 deals
We may earn a commission if you switch. It never changes your price or our order. How we make money
O2 at a glance
| Network | O2 runs its own network. |
| Mid-contract price rise | O2 adds £2.50 a month every April on plans taken out since 23 October 2025. Device plans for the phone itself are frozen. |
| Credit check | O2 runs a hard credit check on pay monthly plans. There’s no credit check on pay as you go. |
| Roaming in Europe | Roaming in the O2 Europe Zone is included on every plan. |
| EU data allowance | 25 GB, then £3.50 per GB |
| eSIM | Yes |
| Wi‑Fi Calling | Yes |
| Ofcom complaints (pay monthly, Q1 2026) | 3 per 100,000 customers (average 2) |
Does O2 put prices up?
O2 adds £2.50 a month every April on plans taken out since 23 October 2025. Device plans for the phone itself are frozen.
Since 17 January 2025, Ofcom has required networks to state any mid-contract rise in pounds and pence before you sign.
Every April price rise, in pounds →How to switch and keep your number
- Get your PAC. Text PAC to 65075 from your current phone. It’s free.
- Order your new SIM and give the PAC to the new network.
- Your number moves in one working day and your old plan closes.
When does your plan end?
Add your network and end date. We’ll email you before every April price rise and three weeks before your plan ends, with cheaper deals already lined up.
O2 questions
What network does O2 use?
O2 runs its own network.
Does O2 raise prices every April?
O2 adds £2.50 a month every April on plans taken out since 23 October 2025. Device plans for the phone itself are frozen.
Does O2 do a credit check?
O2 runs a hard credit check on pay monthly plans. There’s no credit check on pay as you go.
Does O2 include roaming in Europe?
Roaming in the O2 Europe Zone is included on every plan. EU data allowance: 25 GB, then £3.50 per GB.
Does O2 offer eSIM and Wi‑Fi Calling?
eSIM: Yes. Wi‑Fi Calling: Yes.
What is the cheapest O2 SIM only deal?
Today it’s £7.00 a month for 10 GB on a 30-day plan. Prices change daily.