To accompany its preliminary quarterly earnings guidance on Tuesday, Samsung Electronics for the first time issued an explanatory note, to address “investors’ concerns about uncertainties”. Here are some of the key issues facing shareholders after Samsung’s 24 per cent year-on-year earnings decline. 

Samsung Electronics has replaced its head of mobile design just weeks after the launch of its latest flagship Galaxy S5 phone, which was praised in online reviews for its features but criticised for its design.

The South Korean company, however, called the move a routine reshuffle, and denied any link to the criticism. Chang Dong-hoon will retain a broader role overseeing design across the company, while Lee Min-hyouk – at 42, one of the youngest figures in Samsung’s senior ranks – has been promoted to head of the company’s mobile communications design team. 

Samsung Galaxy S5 (Getty)

South Koreans consumers will be able to jump the global queue for Samsung Electronics’ new flagship smartphone, after mobile operators put it on sale two weeks ahead of the official launch date. 

Sirgoo Lee, chief executive of the South Korean mobile messaging company Kakao, chuckles when asked about Facebook’s acquisition of rival WhatsApp for $19bn. “All I can say is that’s a lot of money,” he says.

While it has a strong presence in India and Hong Kong, WhatsApp is a marginal player in many parts of Asia writes Simon Mundy. Kakao, Japan-based LINE and China-headquartered WeChat dominate mobile messaging in their respective home territories, and are fighting for control of the market in southeast Asia. The Japanese internet company Rakuten, meanwhile, last month spent $900m on Viber, an Israeli company that provides similar free calling and messaging services.