Market researcher Strategy Analytics on Monday said Samsung achieved US$5.2 billion in operating profit from mobile phone sales in the second quarter this year, overtaking Apple's $4.6 billion.
Apple had reigned as by far the most profitable mobile phone maker since releasing the iPhone 3GS in the third quarter of 2009, chiefly because it makes more clean profit per phone than any other firm.
But disappointing sales of the iPhone 5 released last year cost Apple the edge as Samsung's sales were buoyed by the runaway hit Galaxy S4.
Samsung has dominated the smartphone market in terms of sales since the third quarter of 2011 and been the world's biggest handset maker since the first quarter of last year.
Source: The Chosun Ilbo