LONDON — BlackBerry says it has resolved an outage affecting users in Europe, Middle East and Africa — interrupting service for customers on the same day Apple Inc. unveiled its hot new iPhone 5.

BlackBerry announced the issues this morning in postings on Facebook and Twitter, and said it fixed the troubles after a few hours. It apologized to customers for the inconvenience caused.

The outage brought up unpleasant memories of troubles with emails and chat messages last year that left users bereft for three days. In the United States and Canada, the outage was shorter, but many of the world’s 70 million BlackBerry users were affected.

The timing could not have been worse: lines formed outside of Apple stores in Britain as the new iPhone 5 went on sale.