It seems that Pocket-lint's anonymous tip was bang on the money, O2's upgrade microsite has confirmed that, for a limited time at least, it will cost existing customers (not just iPhone users) £20 per month remaining on their contract to buy themselves out. They can then take out a new contract with the provider for the new iPhone 4.

An O2 spokeperson told Pocket-lint: "Yes, you were right. We want to make it as easy as possible for people to be able to upgrade to iPhone 4."

It has also been suggested, by a reader no less, that you can also use O2 Recycle to sell your existing handset for anywhere up to £253 (for the 32GB iPhone 3GS). Essentially, that means, should you have 6 months left on your contract, and the iPhone 4 costs £250 new (as expected), you would only need to pay around £117- on top of a basic price plan - for a full upgrade.

Now that's not too shabby, surely? - PAY MONTHLY PHONES Get the brand new Samsung Galaxy S9 and S9+ on the network that gives you 4G in more places than any other. EE runs the UK’s biggest and fastest mobile network, offering superfast 4G in more places than any other operator after pioneering the UK’s first superfast 4G mobile service in October 2012. The networks coverage extends to 90% of the UK’s landmass and EE has received extensive independent recognition, including being ranked the UK’s best overall network by RootMetrics.