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Android Apps with App Inventor: The Fast and Easy Way to Build Android Apps by Jörg H. Kloss

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Chapter 13. Communication

Let’s not forget that you can also make phone calls with your Android smartphone. Indeed, it was not so long ago that we initiated the mobile revolution by becoming able to make phone calls anywhere via the cellphone. Today, this central technical achievement of the cellphone network appears increasingly less relevant and has become almost routine, at least in comparison to the many other functions that have become part of the smartphone in its role as universal companion and convergent service platform. Even if mobile data service is not yet as widespread as mobile telephony and text messaging (SMS), this has begun to change with the broad introduction of flat rates for mobile voice and data services. At the same time, ...

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