if this was cost effective way of turning electricity into bitcoins they would NEVER EVER embed it into mobile phones. they wouldn't even sell the chip, they would just put it in a warehouse somewhere to do it's thing.
also for some reason they think this chip _enables_ bitcoin payments on a mobile phone when in reality you don't need any chip like it for bitcoin payments on a mobile phone.
so it smells. it's a scam on some level or another.
bitcoin mining on a special chip in your mobile phone is a stupid idea, even IF you have the building blocks to make it not be such a stupid idea(magic chip) it would still be stupid to put the in mobile phones when they would be much more affordable and cost effective to put in electrical heaters or whatever - almost _anything_ else than a mobile phone.
and you don't need it for payments as said again. there's no practical need for the chip to be inside your mobile phone - it's practically the stupidest place to put it in!