iPhone 3G hits London

"The main reason I didn't buy the old iPhone was I couldn't put [third-party] software on there," said Steve. "Now that I can buy the programs I want, it opens it up as a useful tool."

Steve, however, works for the government agency Defra, and said he would not be able to use his iPhone as a work device because it does not comply with the strict governmental security protocols. "They're sniffy about the devices they allow on their network," he said.