SAN FRANCISCO (MarketWatch) - Apple Inc. reported a 93% earnings jump for the March quarter on Tuesday afternoon, beating Wall Street's estimates thanks mostly to strong iPhone sales. For the period ended March 31, Apple AAPL, -0.75% reported net income of $11.6 billion, or $12.30 per share, compared to earnings of $6 billion, or $6.40 per share, for the same period last year. Revenue jumped 59% to $39.2 billion. Analysts were expecting earnings of $10.07 per share on revenue of $36.96 billion, according to consensus forecasts from FactSet Research. The company said it shipped 35.1 million iPhones in the period, and 11.8 million iPads.