If you haven’t reserved your iPhone 4 already then you may have to wait some time before you can get your hands on one. Already the dates for delivery from the Apple Online Store are already being pushed out to mid July, and today O2 announced that only existing customers would get the iPhone 4 on launch until the end of July.

With this in mind I was beginning to wonder if the Apple Stores will actually have any stock. I phoned round a few stores and managed to get the same reply fro all the stores I tried: “We will have stock, but it will be very limited. We will have to keep most of our stock for the people who have reserved their iPhones”.

The other wireless carriers have been a little quiet so we don’t really know what is happening there, indeed Vodafone, T-Mobile and Three have not declared pricing yet. No doubt things will become a little more clear next week.

It certainly seems to be leading up to the biggest Apple launch so far. So if you really must have the latest iPhone 4 then it looks as if choosing the right location may pay dividends. The best bet would probably be to try a smaller shop, but then again they will have less stock. It really will be a gamble if you haven’t pre-ordered.

Quote from the O2 site.

iPhone 4 will only be available for existing O2 customers at launch

iPhone stock will be extremely limited in the UK at launch and not everybody who wants one will be able to get one straight away. We want to make sure that our existing customers get priority so until at least the end of July, only existing O2 customers will be able to get an iPhone 4 from us.

Whether you’re an existing O2 mobile customer looking to upgrade, or one of our broadband customers looking to move your mobile to O2, our iPhone stock is reserved exclusively for you.