It may now be difficult or impossible to find an iPhone 4 in much of the US and Europe, suggests Deutsche Bank analyst Chris Whitmore. The firm spoke with over 100 retail outlets over the weekend, and Whitmore notes that 60 percent of Apple Stores were sold out by the end of Thursday, while all other contacted retailers were empty. These included Best Buy in the US, Orange in France and O2 and Carphone Warehouse in the UK.