Phoneum
A few Steemians already represented this app and this business, but they failed to deliver any other information but basic things, how to download it from the Google Play and how to start it... LOL
As an introduction, let's discuss a few simple things about mining on mobile devices.
I heard a lot of crazy statements about mining this or that on the smartphone. There is a reason why we need a rig to mine anything. If you don't believe me try using Monero script from the Coinhive on your smartphone. It is really difficult to force a phone to do anything in that question.
Even if there is a way, and there is a way, the profitability is pretty crappy.
The best example is mining with the MinerGate Mobile Miner. It will not freeze your phone or break anything. It won't explode or burn.
But, with the best chance, if you for example mine Monero, you can make about 0.1 euros per week...
I can make 0.07 euros because my phone is weak.
So, the Phoneum concept is not the newest thing out there or something unheard. The interface is ok, the wallet looks decent, it is slow and it doesn't affect phone functionality.
In short, it is working.