Orange is to sell the iPhone in the UK, ending O2's period of exclusivity with the smart phone.
The company will sell the phone in shops, online and through telesales, as well as through high street partners.
A pre-registration site for interested customers has been launched at orange.co.uk/iphone.
No information has yet been released on pricing, tariffs and when the phone will be available. The company said it would be released in "due course".
Orange says it has the "largest 3G network covering more people in the UK than any other operator". It now sells the iPhone in 28 countries.
O2 said, "We're proud that we've been able to offer an exclusive iPhone deal to our 20 million customers for the last two years. We always knew that iPhone exclusivity was for a limited period of time but our relationship with Apple continues and will be an ongoing success."