ATMChain Pris

Pi Network is a mobile mining app that you can download on Google play or App Store. Main net launch is a ways away so you cannot sell anytime soon. But you can get free coins and who knows what might happen. It is a new digital currency being developed by a group of Stanford University. There is no impact on the battery, it is cloud mining.

Its 1 coin/hour, there is around 50 000 members so you are early, on 100 000 members there is halving and coin/h will be cut in half.

Google "mine pi" if you want to see official website, it is legit project.

To join Pi, you have to have a referral link:

You can use mine, it is: "V u K A"

Video tutorial if interested: Pi Network video tutorial