client-android
· Twilio Client Android is a Java library for Android that enables voice communications with landlines or other Twilio Client devices, including web browsers and other mobile devices.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window client-android-1.2.21.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.