Recently Sony decided to embrace the niche status of its smartphones and created the Xperia Pro and Pro-I – rare cases when “pro” actually means “professional”. One is meant to help with live video broadcasts, the other is more of a vlogger’s tool, both make extensive use of that 4K OLED display that was introduced with the Xperia 1 and improved with future releases. Well, at 3,840 x 1,644 px resolution these are not proper 4K displays, instead it is 4K cropped to 21:9. But once upon a time Sony did make a proper 4K display and it was the first of its kind – also, it was the great...
Source: https://www.gsmarena.com/flashback_the_sony_xperia_z5_premium_was_the_first_ever_smartphone_with_a_4k_display-news-51822.php
