Japanese consumer electronics firm Sony Corp has raised its operating profit estimate for fiscal 2015 to 300 billion yen ($2.52 billion), or four times its previous estimate, the Nikkei reported on Saturday. Expectations for higher sales of display sensors used in mobile phones and the Playstation gaming console were the reason Sony raised its forecast, the Nikkei reported without citing sources. No one from Sony was available to comment. Sony also expected earnings in the fiscal year that ends in March 2016 to improve as restructuring costs had been declining, the Nikkei said.