1 Week old Sony Xperia "U" ?

I have for sale a week old Sony xperia "U", it is locked to the 3 network and comes supplied with an unused sim which includes 15 credit. I have the receipt , box and all accessories. As you would expect the phone is in mint condition the reason for selling is i prefer the windows phones. No offers please, although will sell handset for 150 without sim and credit