The May security patch, as detailed by Samsung earlier this week, brings fixes for nine critical vulnerabilities and dozens of moderate and high-risk vulnerabilities in the Android OS. Also included are fixes for 19 vulnerabilities in Samsung's own software, including one that could allow an unauthorized change of the preferred SIM card when the device was locked and a bug that had been plaguing Galaxy devices since 2014.
Galaxy A8 (2018) and Galaxy A5 (2018) owners will find a notification waiting for them if the May security update is available in their region. If you own either device, you can also manually download the update over the air from the Settings » Software update menu. If that doesn't work, you can download the latest firmware from our archive and install it on your phone using a Windows computer.
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