ios 启用 证书_如何在iOS 10中启用就寝提醒，轻柔的唤醒和睡眠跟踪

ios 启用 证书 If you have trouble regularly getting a full night’s sleep, the new Bedtime feature in iOS 10 might just help. Set a wake up time and how many hours of sleep you need, and iOS offers bedtime

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