Android App not compatible with devices that sideload Google Play

Question

I have an app which has been deployed to Play and is compatible with any device running 2.1 or later; no special restrictions or requirements defined in AndroidManifest.xml.

Answer 1

Maybe the hardware they are running is not compatible with your app? Maybe you require a touch screen and they don't have it; maybe you require telephony and they don't have it?

Note that depending on your target api you might get some implicit hardware requirements.

Anyway, trying to get a log from them would be most helpful!