I've been looking at lots of posts and information doesn't seem to be consistant. As the RazrHD/MaxxHD were shipped with Android 4.0.4 it seemed that MicroSDXC was not supported so the largest card that would work was 32GB, MicroSDHC. Then in my digging I found references to class 4 cards working but class 10 either not working or going bad. What's up with that? Can someone, preferbly more than one, confirm any of this? My first question is will MicroSDXC cards, which are cards larger than 32GB, work in the RazrHD/MaxxHD with Android 4.1.1? My second question is are there known problems with class 10 storage cards in the RazrHD/MaxxHD and should we be using class 4 cards because of this? Is this even the case since Android 4.1.1?