When supercharging, the app provides notification of commencement and completion time on the iPhone. I have a 4S. However, I do not get an audible tone., as I do with say MESSAGES. Has anybody got audible? If so how? The app does not have the option in settings which is there for other programs such as Waze or messages. If not, Tesla needs to program that in as a feature of the app. Should be easy.