Samsung Electronics (005930.SE), the world's largest technology firm by revenue, raised the price of mobile processor supplied to Apple Inc. AAPL, +1.78% by 20% recently, Chosun Ilbo reported Monday, citing a person familiar with negotiations between the two tech giants.

"Samsung Electronics recently asked Apple for a significant price raise in (the mobile processor known as) application processor," the person was quoted as saying in the report. "Apple first disapproved it, but finding no replacement supplier, it accepted the (increase.)"