Problem installing app on some devices

This is not an error message. This is the regular dialog that asks the user to accept the installation of this app.

Erel said:

This is not an error message. This is the regular dialog that asks the user to accept the installation of this app.

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tanx Erel, but when I install the app on the other device those exclamation marks are green check marks, with these exclamation marks the app doesn't have permission to copy db into phone's memory!

capture from the other device (same app)

It seems that these permissions cause this warning!

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.CALL_PHONE"/>

I think that the difference in the dialogs is only a visual difference. Once installed your program will have the required permission.

The problem you are facing is probably related to a different cause.