The Sony Xperia 1 is receiving a new update which bumps up its Android security patch level to June 1, 2019. The firmware carries build number 55.0.A.2.278 and weighs 325MB in size, which suggests there's more than a security patch in it, but a detailed changelog is currently unavailable so it's unclear what exactly does it include. Sony Xperia 1 The Xperia 1 debuted in February 2019 at Mobile World Congress (MWC) and is the first Sony smartphone to come with a triple camera at the back. Not just that, it's also the world's first smartphone to feature a 4K OLED display. You...
Source: https://www.gsmarena.com/sony_xperia_1_june_2019_security_patch_update-news-37434.php
