21 Nov 2013

Install an application (APK) from unknown sources in Android

By default, Android phone will not allow you to install applications (APK) downloaded from sources other than the Andorid Market or Play Store.

Basically, when an application (APK) is created, it needs to be signed digitally with a certificate whose private key is held by the application's developer. The Android system uses this certificate to identify the author of an application and establish trust relationships between applications.Without a valid signature in place, such applications will not be allowed to be uploaded on Play Store.

Whenever you try to install such an app, it will show an error saying that the application is blocked and cannot be installed. However with a few simple steps, this can be bypassed, and applications downloaded from other sources can be installed on Android.

1) Go to Settings> Security and enable "Unknown sources"
2) Install the APK file

Do let me know in case you have any issues. 


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