San Francisco: Chinese search giant Baidu on Wednesday reported its first-quarter profit slipped, despite revenue jumping more than a third on strong use of smartphones to access the service. Revenue for the quarter that ended on March 31 was $2.053 billion (Dh7.5 billion), a 34 per cent leap from the same period a year earlier, according to the Beijing-based internet company. But net income was $395.1 million, down 3.4 per cent year on year, earnings figures showed. Mobile revenue accounted for half the money taken in by Baidu in January-March, the company said in a statement.