Salam peeps. Problem : install build apk from unity in android emulator Causes : based on my googling, it can be varies. Not enough memory space in emulator, solve by removing out apps on the emulator or increase the emulator memory space. (NOT happened in my cause!) Declare in the AndroidManifest.xml "android:installLocation" to auto instead internal (tried but not working) Remove file smdl2tmp1.asec, first navigate to your sdk platform-tools then type "adb shell", followed by "rm /mnt/secure/asec/smdl2tmp1.asec" (NOT happened in my case, i dont event have smdl2tmp1.asec) So after more googling, my PROBLEM was due to my player settings in UNITY when building the APK somehow has overridden my setting in the AndroidManifest file! so... thanks to this post : http://answers.unity3d.com/questions/815011/unable-to-install-apk.html
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