Samsung Electronics says second-quarter operating profit is likely to hit a record high of about 6.7 trillion won ($A5.75 billion).

The South Korean firm said on Friday its April-June operating profit would be between 6.5 trillion and 6.9 trillion won, nearly 80 per cent up from a year ago.

Its previous record was 5.85 trillion won profit, reported in the first quarter of 2012.

Samsung said revenue for the quarter was expected to come in between 46 trillion and 48 trillion won.

Although Samsung did not break out figures for each division, analysts believe at least four trillion won of its profit is from its mobile business.

Samsung, the world's largest maker of memory chips, mobile phones, flat-screen panels and televisions, will announce full results later this month.