Apple is the largest customer for Samsung's component divisions, which make display screens and chips.

WSJ: The Two-Horse Smartphone Race: Apple vs. Samsung

Apple is the largest customer for Samsung's component divisions, which make chips and displays for smartphones and tablets.

WSJ: Apple Moves to Increase iPhone Screen Size

Divisions which are facing an overhaul include IT, customer and marketing and investments and workplace.

BBC: Standard Life to shed 140 jobs in restructuring process