iphones dont float...i have £250 for the best iphone.. *

hi im looking for a new iphone i had a 3gs and i bought one from ebay but the weirdo wont let me pick it up,proberly a scammer i have 250 burning a hole in my pocket for a new iphone so please send a txt as the phone i have now has no internet and im not always near a laptop. thanks i will take this down when i have succeded in getting a new phone, thanks for looking