Large .APK File Size Issue (Expansion Files )

The App that I’m currently working on comes out to about 106MB after the build process. This is too big for the android market and especially for Samsung’s download cache limit of 30MB. I am thinking about just creating a bare minimum build and upload that to the market. Can anyone give me some suggestion on how to build APK Expansion File in corona? or any method to reduce size of APK for uploading the APK?

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