BlackBerry email, instant-messaging and Web-browsing services soon will be banned in the United Arab Emirates starting in October, regulators said, citing a dispute with the device's maker about how it handles electronic data.

The U.A.E. market is relatively small for Canada's Research In Motion Ltd., which makes the BlackBerry smartphone. But the suspension of data service comes amid unease by at least one other government, India, over the inability to monitor or review electronic communications on the device in criminal,...