Exchanging blackberry for iPhone?

I have a 2 month old blackberry bold 9900 white in perfect condition with all packaging and accessories but I now want a white iPhone 4S. Is there anywhere I can exchange my blackberry for the iPhone?

I don't think so, but you could always sell it on Ebay. Don't try Wonga, or any other phone swapping company. They rip you off badly. Get the money, and any other money that you have can also go towards an iPhone. It may take sometime.

I may be wrong, so always call into Carphone Warehouse or Orange, Vodaphone or T-Mobile.
~Sophie:')

Swaps.co.uk