In their early days mobile phones were used only for making calls and later on for sending short text messages. Today we don’t even call them phones any more: a mobile device is a computer that fits in your pocket. Still, communication is one of the core purposes of a mobile device and this is what we will focus on in this chapter by making an app that can make phone calls and send e-mail and text messages (SMS, or short message service).
In this chapter you will ...