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				 The launch of the new flagship model 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 saying an exit cannot be ruled 
				out. 
				 
				But as the company 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. 
				 
				Sony said the Xperia Z4 would be available in Japan around the 
				middle of the year, though it did not provide a launch date, 
				details on carrier partners or price. The handset would be 
				available in four colours and was slightly thinner than the 
				previous Z3. 
				 
				Hiroki Totoki, who was appointed last year to turn around the 
				mobile unit, said Sony was targeting the upper end of the market 
				where rivals such as Samsung Electronics Co Ltd and Apple Inc 
				dominate. 
				 
				"There's a broad variety in the prices of smartphones, from 
				around $100 to $1,400 at the upper end," he told a news 
				conference. "We want to focus in the upper half of that." 
				 
				Sony's mobile division has fallen far behind high-end rivals 
				such as Samsung and Apple, while at the low end it is battling 
				pricing pressure from Asian manufacturers such as China's Xiaomi 
				Inc. 
				 
				The company whose Walkman and Trinitron TV once played a 
				critical role in the global entertainment industry has struggled 
				in recent years to come up with trend-setting gadgets. 
				 
				Sony announced in February that it would scale down its weaker 
				operations such as TVs and mobile phones to focus instead on 
				more successful products such as video games and camera sensors. 
				 
				Chief Executive Kazuo Hirai has not ruled out an exit from weak 
				operations, amid a restructuring that has so far seen the 
				company sell off its personal computer division and spin off the 
				TV business. 
				 
				In February, he said the Japanese consumer electronics firm 
				would no longer pursue sales growth in smartphones. 
				 
				(Reporting by Ritsuko Ando; Editing by Stephen Coates) 
				
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