Preliminary revenue came to 77 trillion won (59.3 billion U.S. dollars) in the April-June quarter, up 20.9 percent from the same quarter of last year.
It was slightly down from a record high of 77.78 trillion won (59.9 billion dollars) in the first quarter of this year, but it was the second-highest revenue in the company's history.
Preliminary operating profit increased 11.4 percent over the year to 14 trillion won (10.8 billion dollars) for the second quarter.
Net income and detailed earnings on each business unit will be announced later this month after an external audit and the board of directors' approval.
Latest comments