Sony has unveiled a new version of its flagship Xperia handset to show its still in the smartphone race; even as it scales down its mobile phone operations.<br /><br /> The release of the Z4 comes amid a painful restructuring at the Japanese consumer electronics giant which has thrown the future of its smartphone division into doubt, with top executives refuses to rule out an exit.<br /><br /> As the firm focuses on cutting costs rather than growing its mobile market, the division still needs investment in new products and marketing to maintain Sony’s brand and hold off a more rapid deterioration.
