United Arab Emirates ? The United Arab Emirates’ looming crackdown on BlackBerry services will extend to foreign visitors, putting the government’s concerns over the smart phones in direct conflict with the country’s ambitions to be a business and tourism haven.

The Emirates’ telecoms regulator said Monday that travelers to the city-state of Dubai and the important oil industry center of Abu Dhabi will — like the 500,000 local subscribers — have to do without BlackBerry e-mail, messaging and Web services starting Oct. 11, even when they carry phones issued in other countries. The handsets themselves will still be allowed for phone calls.