As of the 1st September 2017 Android published their updated Compatibility Definitions Document version 8.9.8.1 . Usage History - Android stores the history of the user's choices and manages such history by UsageStatsManager . Device implementations: [C-1 -1 ] MUST keep a reasonable retention period of such user history. [SR] Are STRONGLY RECOMMENDED to keep the 1 4 days retention period as
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