It is very possible that this will happen very soon, maybe even in the next year or two!
I think the long wait is over dude, it actually happened already. Electroneum (ETN) launched their own digital wallet and mobile miner in one app. It lets you to mine ETN with the appropriate hashrate for your phone so that it will not be damaged. It generates slower (very obvious) compare to a mining rig but at least we now created a stepping stone towards more efficient mobile mining, this will surely become an inspiration for future developers

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