But markets reacted adversely anyway, sending its shares down over three per cent.

That's after Samsung warned it couldn't rule out a fall-off in demand growth ahead for memory chips.

Lingering U.S.-China trade tensions are a factor ...

And the word from one Samsung division is that China's coronavirus could also hit performance.

Operating profit for Q4 came in at 6.1 billion dollars.

For the year, it was at its lowest since 2015.

The South Korean firm is the world's largest chip and smartphone maker.

But global stockpiles of chips have squeezed prices - while trade tensions have squeezed supply chains.

By contrast, chip peers like Intel and TSMC have given more positive outlooks ...

Though rival smartphone maker Apple this week also flagged uncertainty created by the coronavirus outbreak.