Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.
1. 可以在通知中心分别控制铃声音量和音乐音量。 2. 当设置成最小音量时，避免因忘记恢复而错过电话或短信，可以设置提醒（专业版功能）
