user83936: 
Please can someone explain if this is a  genuine app for bitcoin mining? 

user63872: No, a mobile device cannot mine bitcoin. 
These days, mining bitcoin requires specialized computer hardware called ASICs. They are loud and hot, and incredibly efficient at computing the SHA256 mining algorithm. A mobile device is not like this at all, it is not optimized to compute SHA256, it is meant to be a general-purpose device. Trying to mine bitcoin using a mobile device would be a literal waste of money (electricity), and you would receive no bitcoin in return, because your device would not contribute a meaningful amount of hashpower to the network.  
The app is likely malicious, I would remove it from your device. 

83936: <p><img src="https://i.stack.imgur.com/yBMnn.png" alt="enter image description here">
Please can someone explain if this is a  genuine app for bitcoin mining? </p>
 63872: <p>No, a mobile device cannot mine bitcoin. </p>

<p>These days, mining bitcoin requires specialized computer hardware called ASICs. They are loud and hot, and incredibly efficient at computing the SHA256 mining algorithm. A mobile device is not like this at all, it is not optimized to compute SHA256, it is meant to be a general-purpose device. Trying to mine bitcoin using a mobile device would be a literal waste of money (electricity), and you would receive no bitcoin in return, because your device would not contribute a meaningful amount of hashpower to the network.  </p>

<p>The app is likely malicious, I would remove it from your device. </p>
