3, which is one of six UK mobile networks offering the handsets, still list a £25 deal as 'coming soon' on its website, but details of monthly price plans on a 24-month contract are listed, starting from £30 rising to £45.
The mobile network also offers a SIM-only iPhone 4 deal from £15 or £25 per month for those who already have Apple's new smartphone. Current pricing details for monthly, pay-as-you-go and SIM-only deals on 3 are available here.
3 claims to have the UK's biggest 3G network, promising 98 per cent coverage by the end of 2010. In a recent YouGov survey of mobile broadband users, 3 was voted the UK's best mobile broadband provider.
The YouGov survey asked more than 2,000 customers from 3, O2, Orange, Vodafone and T-Mobile, along with smaller providers, to rate the level of service they got from their provider on twelve key points. These were installation of software, network coverage, getting connected, staying connected, reliability during the day and during the evening, download speeds, upload speeds, ease of use, customer services, billing and overall quality. Customers rated Three the best in ten of these twelve criteria.
See also: OPINION: Kill The iPhone 4, Apple