There are some said-to-be-great applications are lying around outside Android Market. There are times when you meet them and you want to have them on your Android phone, sadly sometimes your Android prevent you from doing it and give you the message “For security, your phone is set to block installation of applications not obtained from the Android Market”. What is the use of making applications but cannot be installed?
Fortunately almost all application can be installed on your Android device, you just have to know the way around it. Here is how to allow app installs from non-Market apps, first you should tap the menu button on your home screen, then choose Settings >> Applications >> Unknown sources.
You just need to set to allow “anything other than the Android Market” so it could be application you received on email or to offline installation file. However, sometimes installing not-allowed applications get you worry about the security of the apps. Don’t worry there is a simple way to fix it by hitting the checkbox again after installing unknown source application.
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