So, a couple of Android specific issues:
1) Campaign crashes on 1st opponent. This is more than annoying as you're required to win battles in campaign to unlock good cards.
2) No network multiplayer! Only via bluetooth which is pointless. And you don't know that unless you buy full version for 10$ (or check the rant at official forums, which I did).
Epic fail on behalf of WotC. And someone's complaining at Wulven...