zf volume control has following functions: 1. disconnect ringer & notification volume 2. flip your phone to mute (pro ver) 3. auto mute when your phone connects to office's wifi 4. when a call in-coming, auto increasing the ringer volume every 5 sec (pro ver) 5. vibrate your phone when call-in and call-out, every 300sec. (you can define the vibrate period) 6. make a notify let you know your battery is full after 5 min 7. from 8am to 11pm, use google tts let you know what time is it, every 30 min 8. when your phone offhook, use proximity sensor on/off phone speaker (pro ver) zf volume control 有以下功能: 1. 斷開通知與電話鈴聲的音量綁定 2. 捐贈版: 翻轉手機朝下自動靜音 3. 連上特定的wifi自動靜音 4. 捐贈版: 漸進式鈴聲音量 5. 打電話時，每300秒(可設定)震動一次提醒通話時間 6. 當手機充飽電時，發出聲音並通知你可移除電源 7. 早上八點至晚上十一點區間，使用google語音每三十分鐘報時 8. 捐贈版: 打電話時自動利用距離感應器來開關擴音器 --