At a glance. The Apple iPhone 18 Pro is currently sold on contract by Fonehouse, Mozillion, O2 and iD Mobile, with airtime from Mozillion, O2, Talkmobile, Three, Vodafone and iD Mobile. It is available in 4 storage sizes (256GB, 512GB, 1TB, 2TB); larger sizes add to the price, so pick the smallest you can live with. The cheapest deal by effective monthly cost is £50.49 a month with £30.00 upfront over 48 months on O2, which works out at about £39.12 a month all in. If you would rather buy it outright, the lowest SIM-free price we track is £1,190 from Mozillion — worth comparing against the contracts above, paired with a SIM-only plan. Key specs: 6.3" super retina xdr oled, a Apple A20 Pro (2 nm) chip, IP68 water resistance.
The headline trap
The lowest monthly price for this phone is £11.95 — but it comes with £959 to pay upfront.
Cheapest-lookingFonehouse
Advertised£11.95/mo
Upfront£959
Whole bill, 24m£1,245.80
£51.91/mo really
Actually cheapest
Genuinely cheapestO2
Monthly£50.49/mo
Upfront£30
Whole bill, 48m£1,877.52
£39.12/mo really
Choosing the cheapest-looking deal would cost you £306.92 more over the contract.
Contract or buy outright?
The cheapest new 256GB contract, against buying the same phone outright and adding the cheapest SIM plan with at least 5GB of data, over 48 months.
Buying outright and adding a SIM saves £471.52 over 48 months — and you are free to switch network any time.
Assumes the SIM plan price (Lebara sim only, 5GB, 12-month term) stays the same for the whole period; contracts may also rise each year. Add price rises or cashback in the calculator.
Key specs
Screen6.3"
DisplaySuper Retina XDR OLED
Resolution1206 x 2622
ChipsetApple A20 Pro (2 nm)
Front camera18 Megapixels
Water resistanceIP68 dust/water resistant (up to 6m for 30 mins)
Weight211g
Dimensions150.0 x 71.9 x 8.75 mm
Every contract for the iPhone 18 Pro, ranked by true cost
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