Samsung Electronics reported a 20% year-on-year fall in revenues in its IT and mobile division to 25.89 trillion Korean won (24.3 billion US dollars) for the first quarter of 2015. That represents a slight improvement on the 22% decline in the fourth quarter of 2014.
In the second quarter, Samsung said it expects "earnings improvement led by increased high-end sales with S6 global expansion, while smartphone shipments to remain at similar level due to decreased mid/low-end sales. Expect marketing expenses to increase due to S6 expansion." source: Samsung statement