Friend, its utter waste to mine monero using your mobile phone. Because it will take years for you to mine one monero using that. For mining monero you should use your pc. But you can mine electroneum using your mobile phone. That's what the developers claim about it. Even its mobile wallet has got the mining feature in it. Its blockchain will go live from 1st November. After that you can try mining it with your mobile.
To mine 1 ethereum coin using the gpu of a 500$ nvidia GTX1080 graphics card it takes 2 months. The gtx1080 can crunch 2 roughly 25.000.000 hashes per second.
Sure, there are ethereum miners for android (look for minergate on google play).
Ethereum has been designed to make it impossible (at least… none succeded until now) to be mined using specialized hardware chips designed explicitly for the mining task, so the graphics card GPU miner, for ethereum is still the most powerful miner you can get.
For bitcoin this is not true: GPUs are outperformed (the same way a gpu outperforms a phone) by dedicated ASIC miners which are a thousand times faster than GPUs.
Now: both coins have in common that they automatically get more hard to be mined to compensate the introduction of more powerful hardware: there is a predetermined number of coins to be generated globally every day: you just get a slice of this pie and its size is proportional to the amount of computing power you can offer compared to the total amount provided by the rest of the world.
Miners are in a continuos competition one against the other in getting the most powerful hardware they can and the cheapest electricity bill.
Today it is practically impossible to mine bitcoins without using ASIC miners: it takes months to get one bitcoin using an ASIC miner, it takes decades using a GPU and well… a phone is as useful as a stone for mining bitcoin.
Moreover: keeping an ASIC miner running, today has electricity costs high enough to make it more convenient to simply buy bitcoins at the regular markst price, unless you live in a place where electricity costs are really low (read: China)… or unless you get your miner powered by solar panels. But you need hundreds of asic miners to get some serious money, today, and they aren't cheap.