Seoul: Samsung Electronics posted 6.9 trillion won ($5.9 billion) in operating profit in the second quarter, missing market estimates on weak demand for Galaxy S6 smartphones, a regulatory filing showed on Thursday.

The second-quarter operating profit was up 15.36 percent from the prior quarter, but it was down 4.03 percent from a year earlier. It also missed market expectations, leading Samsung shares to decline 1.66 percent as of 9.18 a.m. local time in Seoul trading, reported Xinhua.

Revenue slid 7.29 percent from a year earlier to 48.54 trillion won in the quarter, and net income fell 7.97 percent to 5.75 trillion won.