The latest software update for OnePlus 9 series brings Android security patch for the month of April as well as some system-level stability improvements.
NA: 11.0.4.4.IN11AA
According to the changelog, there are several fixes and optimizations, making their way to the smartphone. These include the following:
Optimized the experience of using long screenshots
Optimized the UI display effect of the notification bar
Improve the stuttering problem of some tripartite applications
Fixed the small probability issue that Twitter may freeze
Fixed the issue that opening app split-screen may fail
Fixed the issue of failure to switch the accent colour in a small probability
Fixed the inaccurate display of the attribution of some numbers
Fixed known issues and improved system stability
Updated Android security patch to 2021.01