A new OxygenOS Open Beta update has started hitting the OnePlus 3 and 3T smartphones. Arriving as version 27 and 18, respectively, the update brings new UI for the Do Not Disturb (DND) feature. The new firmware brings some battery optimizations and improvements related to Smart Text Selection and General performance. The OnePlus and GMS applications have also been updated. And finally, the update also includes the October security patch. Source 1 2
Source: https://www.gsmarena.com/latest_oneplus_3_3t_open_beta_brings_new_dnd_ui-news-28311.php
