Samsung's fourth-consecutive quarter of sales and profit growth marks a full-year rebound for Samsung, which in the year-ago period reported a 7.4% decline in sales as its consumer-facing businesses struggled while the coronavirus ravaged the globe. The bread winner for Samsung in the second quarter was its semiconductor business, accounted for more than half of the company's operating profit and nearly 35% of its sales. Samsung semiconductor business recorded sales were up 25% to 22.74 trillion won ($19.7 billion) and operating profit increased 27% to 6.93 trillion won ($6 billion). Samsung credited the rise to strong demand for server and PC memory, as well as stronger-than-expected increases in average sales prices for both DRAM and NAND chips. But Samsung expects the components supply problems to persist in the second half, the chip market is expected to see supply problems for components persist, and it may face risks from variant COVID-19 viruses and geopolitical tensions.