Originally Posted by bfksc
The app must support the feature of moving to 'SD card' storage. If the app doesn't support it, then it can't be moved and the option will be greyed out. For instance, Google Maps can't be moved, but Google Sky Map can. And it's good that some can't be moved because they need system access, like Google Maps which needs location via GPS access and may need to stay within internal storage. Sky Map only uses wireless location info for approximate area so it doesn't need system access. Or for performance issues, the author wants to keep the app in the main internal memory area. None of this is the fault of the phone, it's an issue with the app.
Some apps may have had the option before, but with newer OS versions the app may not have been updated to support the new OS.
So, moving say, the Facebook and LiveJournal apps are a no-go, because they rely on the GPS access, correct?
But going on this, I should have been able to move 'Battery Doctor' to USB storage, since it doesn't access GPS data.
Ugh. Methinks I SHOULD have saved for the Galaxy Nexus.