That's a stupid idea! Mobile is not for this.
Manufacturers try what they could to make the tiny device more efficiency, while mining consumes more electricity and cause more damage to your devices.

And how much will you earn on a daily basis? Ten cents, fifty cents? And how much will you lose?
That's really a joke, and will definitely bring your mobile a small lifespan of living. You need to pay more on phones.
You lose is more than than CPU/GPU minings, which is not that profitable already.

Projects that involves mobile mining are basically SCAMs