The launch of the Xperia 1 and the Xperia 10 duo left us with no Compact phone (there's no successor to the XZ3 either). We've been hearing rumors that new Compact models will be pushed closer to the mid-range and this is where the Sony Xperia 4 comes in. This is largely based on rumors being passed around in the Esato forums, including this image that compares two older Xperia Compacts with the rumored new model. The idea behind the Xperia 4 is simple - keep the width of older Compacts, namely 65mm, but grow the screen to a 21:9 aspect ratio. Most phones in the series came with...
Source: https://www.gsmarena.com/sony_xperia_4_might_replace_the_compact_line_will_have_a_219_screen-news-36104.php
