I would suggest the following: Android 2.1-2.3 Phone (e.g. HTC Evo) Android 4.0 Phone (usually high def) (Galaxy SIII, Galaxy Nexus, and most other modern Andr

I would suggest the following: Android 2.1-2.3 Phone (e.g. HTC Evo) Android 4.0 Phone (usually high def) (Galaxy SIII, Galaxy Nexus, and most other modern Android phones). Those cover most of your situations as the Android SDK mostly changed after Android 3.0 and 4.0.