I was in the closed beta on my samsung galaxy S7. Battery and CPU usage on the phone was high so it heated up significantly. Maintained 60 fps unless went fully zoomed out. Fingers don't make for the most efficient/precise mice though, so i'd recommend just going for a tablet or getting a stylus if you plan on playing on your phone a lot. The beta itself had very few bugs. On the hidden forum section we could post feedback to, I didn't hear anything about anything gamebreakinig being discovered outside of a rendering glitch here or there.