https://www.tomshardware.com/news/sony-xperia-x-series-announcement,31250.html
Sony Announces New Xperia X Series Smartphones | Tom's Hardware
Feb 22, 2016 - At MWC 2016 Sony took the wraps off three of its latest Android smartphones, part of the Xperia "X" series phones: the X Performance, X, and XA.
xperia x seriessonyannouncesnewsmartphones
https://indianexpress.com/article/technology/mobile-tabs/sony-xperia-x-xa-launch-specs-price-amazon-sale-2825342/
Sony launches Xperia X series in India: Key specs, price and more | Technology News - The Indian...
May 31, 2016 - Sony Xperia X and XA showcase company's latest technological advancements in battery, design and camera