Samsung Electronics posted an 8.0 percent fall in its second quarter net profit Thursday as the world's top smartphone maker continued to suffer stiff competition from Apple and Chinese rivals.  

Net profit for April to June fell to 5.75 trillion won ($4.9 billion), down eight percent from a year ago, the company said in a regulatory filing.

Operating profit sank 4.03 percent from a year ago to 6.9 trillion won, while sales dropped 7.3 percent to 48.5 trillion won.