The Samsung Galaxy A Android Pie update went through a beta but Galaxy A9, Galaxy A8, Galaxy A7, and Galaxy A6 users are complaining about a variety of bugs and performance issues.

Samsung’s Android Pie update is rolling out to the Galaxy A9 (2018), Galaxy A8 (2018), Galaxy A7 (2018), and Galaxy A6+. The roll outs are still fairly limited, but we expect them to pickup speed as we push into April and May.
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https://www.gottabemobile.com/samsung-galaxy-a-android-pie-problems-fixes/