Wouldn't mining be another point of success for blockchain? Validating blockchain transactions using mobile nodes is really an awesome idea. Although we are mostly accustomed to POW and POS consensus, it wouldn't remove the idea of mobile nodes giving way to newer consensus mechanisms. One that is ight and is almost ignore-able.
What's the reason if mining is a factor that make the project become successful? any coins either good coins, scam coins or dead coins can be mined lol, as long as you have a mining hardware, you can mine any mineable coins.
There's no way to mining via phone, phone processor is really low performance except you bought a high end phone that would cost you a lot. But it doesn't make sense to mine a cheap coins with expensive phone, you're wasting your money.