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Sales of the iPhone are ringing up the profit for Apple Inc., the company said Wednesday.

The company sold nearly 3.8 million iPhones in its second quarter, ended March 28, up 123 per cent from the number sold in the comparable 2008 quarter, Apple said.

Profit for the quarter was $1.21 billion US ($1.33 a diluted share), compared with $1.05 billion ($1.16 a share) a year earlier.

Revenue was $8.16 billion, compared with $7.51 billion a year earlier.

Both profit and revenue beat analysts' consensus estimates, U.S. reports said.

"We are extremely pleased to report the best non-holiday quarter revenue and earnings in our history," Peter Oppenheimer, CFO, said in a news release.

Apple sold 2.22 million Macintosh computers in the quarter, a three per cent drop from 2008.

It sold 11 million iPods, three per cent more than in the year-ago quarter.

Apple stock jumped $2.75 to $124.26 in after-hours trading.