Google remotely changed the settings on a bunch of phones running Android 9 Pie

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https://www.theverge.com/2018/9/14/17861150/google-battery-saver-android-9-pie-remote-settings-change

"The company posted a message on Reddit last night acknowledging “an internal experiment to test battery saving features that was mistakenly rolled out to more users than intended.” So Google had remotely — and accidentally — changed a phone setting for a bunch of real-world customers"