I use Mobile Miner on Samsung Note 2 at 30.xx h/s but a day can only earn 0.0x ETN, anyone know why ? 
The app was not compatible with my Note2. How did you even manage to instal it? Do you have that unofficial app? Then there might be your answer.
Maybe this is not an official mob app that is why he is facing this problem. Even hash power is really high as compare with this model.