It has meanwhile been suggested, according to anonymous sources, that not only will O2 sell the 3G iPhone in the UK for just £100 with an 18-month contract, but that the carrier may offer added incentives. Customers could, for example, opt for a pay-as-you-go option plan, in exchange for a cost of £269 for the actual phone. A reverse option could involve receiving the iPhone for free, but mainly to new customers signing up for O2's most expensive £75-per-month subscription. Owners of 2.5G iPhones could also be given the chance of a free device, but they could be expected to add another 18 months to their contract.