Is there is function any of single tap mode to answer and reject calls?
Due to lack of many physical buttons, most Andorid smart phones on the use of on screen buttons to perform actions in your app. Some of these actions require a minimal amounts of interactions, others require some additional steps. If there are certain things on your phone that you little easier to do, such as interacting with alarms and phone calls, then you should try activating single tap mode. https://panseva.com