Samsung — A307gn U4 Official Firmware?q=samsung A307gn U4 Official Firmware

: Integration of updated security patches (e.g., May 2022 patch level for build A307GNDXU4CVE4 ) to protect device data.

The U4 binary firmware includes the following major enhancements: : Upgrade to Android 11 with One UI 3.1 . : Integration of updated security patches (e

: Refreshed icons, smoother animations, and a reorganized quick panel and notification shade for a more consistent experience. : Integration of updated security patches (e