I think this idea is not feasible. Mining with a mobile phone may be convenient, but it will take a long time and have a low success rate. I think that if you want to increase the success rate and speed of mining, what should be strengthened is the ability of the computer.

I would not even consider mining with a mobile phone.  It's already hard enough to see profit from GPU miners and Asics so I can't imagine mining with a cellphone would even be possible for profits.  Better off doing bounties to earn cryptocurrencies if you're unable to purchase or mine them. 

I believe it will never happen becuase it's too cheap to buy a phone nowadays and it's not necessary to have many things to start. People will lose heads in this case.

 Electroneum is the first cryptocurrency that will allow its
users to mine it with a mobile phone. This new feature will allow millions of smartphone users around the world to get started with cryptocurrency mining, an industry previously reserved for computer geeks and nerds.

The Electroneum team has described their mobile app as a Mobile Mining Experience.App has already been developed and is currently in a beta testing phase. The Android app can be downloaded from the Play Store.

Rest of the information can be found easily.

You cannot mine Bitcoin using the processor on an Android phone. Nowadays all serious Bitcoin mining is performed on dedicated Bitcoin mining hardware called ASICs(application specific integrated circuits), usually in thermally-regulated data-centers with access to low-cost electricity. Think of a Bitcoin ASIC as specialized Bitcoin mining computers, Bitcoin mining machines, or “bitcoin generators”.

I think you do not want to do mining on your phone because of it
this seems to be worth it if you do because I've done that and until now the mining of the phone can not be withdrawn or sent. so it would be better if you use pc.

I heard that the guys were getting massively crypto currency through other people's devices, how common is mining really like this?

When my phone is working slowly or the laptop is not working properly, I immediately check if I have a mining virus with some cryptocurrency.
Seriously, I have a lot of important information in the phone and all memory is busy. I would not want mining on my own phone.

and how could we expect that spensing big amount on mining rigs just to mine coins,and all of a sudden can easily be use mobile to do such?thats impossible maybe the gadget will explode without mining even a small amount of altcoin..this is crazy to believe that they miners will allow this to happen.this purely advertisement but for sure theres no reality on this one.

I think its not Minimal,maybe nothing at all,seems like they just wanna make believe the users about the project to be popular and earn big in ico but totally it's senseless

Of course, this sounds very tempting, but it seems to me that this is unlikely. Which phone has enough power for this?