Actually im playing this on galaxy s3. But theres problem with the battle timer for online play. Because of the animation taking too much time. Result is i either loose the game because my timer freeze or because the timer warp and i cant finish my turn. Sometime i can finish a game or 2. But for that i have to use the smallest resolution available. So the game is really small on the screen. .. and even with that ...The solution would be to .put more time for battle or lower quality.

Anyway the galaxy s3 got some ram problem it seem... i dont know if it works good on other smartphone... but i think the same as you, it would be a good idea. To be able to play this game on phone without problem of any kind... but i really dont expect much.