I thing mining rewards has already lowered enough. I have been doing cloud mining of ETN since its start. I can say mining speed must have been lowered around 1/5. After prize rise for ETN many people would start mining too. I have trust on ETN team that they can do better.
Many people still, have strong faith in ETN because the things they are doing in the background makes us hold the coin until the market starts recovering. As of now, mining is not much profitable because the value of ETN price is low which we are not making enough money through mining.
Mobile "mining" is an airdrop, not an single block can be created because it's not actual mining.
The real mining is done by ASICs, so I you don't have an ASIC and cheap electricity you can't make a profit (in terms of FIAT) mining ETN.