Sony's Xperia Z5 family includes the world's first 4K smartphone
 

To say that Sony's mobile division has had a tough time lately would be an understatement. As the company puts out half-hearted efforts like the Z3 and Z3+, sales have been dropping steadily. We're now at the point where Sony is losing more than $1...

http://www.engadget.com/2015/09/02/s...&ncid=rss_semi