In this EBook,  we will guide you to develop your 1st Android app similar like True Caller.

Most Smartphone users are aware that apart from functioning as a phone, the Smartphones function as text messengers, camera, web browser, office applications, and form a base for a host of applications called Apps. In short, the mobile phone acts like a mini-computer apart from a phone. This computer like operability is possible because of the operating systems (OS) that are embedded in them and the applications (Apps) that can be run. The two well-known Operating systems made for mobiles are Apple’s iOS and Android.


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