Application Package Files, the abbreviation of which is APK, is something that every Android user should have knowledge about. The reason behind this is that there are so many people out there who can do so much more with their Smartphones than simply use them for calling and texting. The world of apps is waiting to be explored and limited knowledge of the Android market APK will do nothing except for hindering you from making the most of your Smartphone.
Every Android phone comes with pre-installed the APK, which allows them to easily install and utilize the application, make your life much easier. Almost all applications have pre-installed the APK file, and in most cases do the needful But some download APK files for Android.
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However, if by chance the application does not belong to the Android market, then you, as a user, will face serious problems, until and unless you choose not to install the APK file manually. Questions need to be asked now is, "why this particular step is needed?" The answer is quite simple, for the smooth functioning of applications and devices.
If you are faced with the task of manually installing APK files, as users APK Android market first and foremost you have to copy or save the file to your Smartphone's memory. When finished, simply export the file and manually get it to function with a copy to the memory of your Smartphone again! Yes, this process needs to be done twice to make sure.