61.2 million iPhones sold, but iPad sales decline 23%.
Apple has reported a 27% increase in its revenue to $58bn for fiscal second quarter ending 28 March 2015, up from $45.65bn last year due to strong iPhone sales.
The company posted a net profit of $13.6bn, or $2.33 per share, in Q2, compared to $10.22bn, or $1.66 per share, a year earlier.
Sales in Greater China increased 71% to $16.8bn. Revenue from Americas and Europe increased 19% and 12% to $21.31bn and $12bn, respectively.
Apple sold 61.2 million iPhones in Q2, up 40% from the same period last year. Mac sales increased 10% to 4.56 million units.
iPad sales declined 23% to 12.62 million units in the quarter, when compared to 16.35 million last year.
Apple CEO Tim Cook said: "We are thrilled by the continued strength of iPhone, Mac and the App Store, which drove our best March quarter results ever.
"We’re seeing a higher rate of people switching to iPhone than we’ve experienced in previous cycles, and we’re off to an exciting start to the June quarter with the launch of Apple Watch."
Apple expects its fiscal 2015 third quarter revenue to be in the range of $46bn and $48bn.
The company has authorised an increase of over 50% to its share-buying programme. Apple intends to use a total of $200bn of cash by the end of March 2017.