The Android Security Patch for March 2019 update consists of the 2019-03-01 and 2019-03-05 security patch levels, which address a total of 45 security vulnerabilities affecting the Android Framework, Media Framework, Android System, Kernel and Qualcomm components, as well as Qualcomm closed-source components, and the Pixel Update Bulletin for March 2019, which fixes various issues for Pixel 3 users. According to the Pixel Update Bulletin for March 2019, Google improved the responsiveness and startup of the Camera app, Bluetooth reliability and storage performance, the OTA update mechanism, and playback of encrypted media with certain video apps.