"When I was testing a samsung galaxy s2" I would not consider the S2 as being in any way definitive of "Android". The only Android devices that I would attach

"When I was testing a samsung galaxy s2" I would not consider the S2 as being in any way definitive of "Android". The only Android devices that I would attach that label to are the ones with Nexus in the name. As far as running apps from the sdcard, neither the Nexus S, the Galaxy Nexus, nor the Nexus 7 even have an sdcard slot and the Nexus 7 and Galaxy Nexus have full access for apps to the entirety of internal memory, e.g., if you have a 32 GB device, you have access to whatever's left over of that 32 after the room set aside for the system so accessing the "sdcard" is a moot point despite there being a mount point for it for backward compatibility.