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battery peak performance

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    iPhone SE (2016) Just a heads up about "performance management" (iOS slowing down your iPhone)

    I have a 1 year old iPhone SE that has good battery capacity, and will last all day with heavy use. It has never shut down once due to the battery not being able to deliver peak performance. Except once a few months ago, when I was working outside for 14 hours in -10ºC. The battery drained due...